Note: Descriptions are shown in the official language in which they were submitted.
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DETERGENT COMPOSITION COMPRISING LIPASE ENZYME AND CATIONIC
SURFACTANT
Technical Field
io The present invention relates to detergent compositions or components
thereof containing
cationic surfactant and a lipolytic enzyme for use in laundry and dish washing
processes to
provide enhanced greasy stain removal and cleaning benefits.
Baclc~round to the Invention
It is known to use cationic surfactants in detergent compositions. For
example, GB 2040990A
describes granular detergent compositions comprising cationic surfactants.
Other detergent components frequently employed in detergents are lipolytic
enrymes, which are
2 o known to be used in detergent compositions to aid the removal of (greasy)
stains, containing
triglycerides or fatty esters. For example WO 92/05249 discloses certain
lipase enzyme variants
and methods of their production.
Generally, the stain removal performance of lipolytic enzymes is directly
related to their
concentration in the detergent composition, so that an increase in the amount
of lipolytic enryme
increases the stain removal performance. It has however been observed that
under stressed
conditions, such as the use of short washing machine cycles, or at low
temperatures or in the
presence of highly stained substrates, the optimum performance of the lipase
enzyme is limited
beyond a certain level. Increasing the level of lipolytic enzyme beyond this
amount therefore
3 o may not result in increased stain removal performance benefits.
The Applicants have now found that these problems can be ameliorated by a
detergent
composition comprising a combination of a specific quaternary ammonium
cationic surfactant
and a lipolytic enzyme. Employing both of these components in combination has
been found to
deliver surprisingly better greasy stain removal and cleaning performance than
that of detergent
compositions employing either of the two components individually. The
invention has been
found to be particularly beneficial in detergent compositions which
additionally comprise
anionic surfactants.
4o Without wishing to be bound by theory, the Applicant believes that the
particular cationic
surfactants used in the detergent compositions of the present invention have
surprisingly good
solubility and form an association in the presence of anionic components to
produce surprisingly
soluble anionic/cationic complexes which lead to unexpected performance
benefits: the cationic
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z
surfactant penetrates greasy stains and rapidly produces increased surface
area on the greasy
stain for lipolytic enzyme attack. Furthermore, it is believed that following
breakdown of the
oily soil by the enzyme, the cationic surfactants used in the present
invention may also form
complexes with the fatty acids and any other negatively charged breakdown
product produced,
increasing their solubility and enhancing greasy, oily soil removal and
overall cleaning
1 o performance.
All documents cited in the present description are incorporated herein by
reference.
Summary of the invention
The present invention relates to a detergent composition or component thereof
which comprises
(a) a lipolytic enzyme; and
(b) a cationic surfactant of formula I:
R1 R2 R3 R4 N+ X (I)
in which RI is a hydroxyalkyl group having no greater than 6 carbon atoms;
each of R2
and R3 is independently selected from Cl_4 alkyl or alkenyl; R4 is a CS_11
alkyl or
alkenyl; and X' is a counterion.
Unless otherwise stated alkyl or alkenyl as used herein may be branched,
linear or substituted.
3 o Substituents may be for example, aromatic groups, heterocyclic groups
containing one or more
N, S or O atoms, or halo substituents.
Detailed description of the invention
Cationic surfactant
The cationic surfactant is generally present in the composition or component
thereof in an
4 o amount no greater than 60% by weight, preferably no greater than 10% by
weight, most
preferably in an amount no greater than 4.5% or even 3% by weight. The
benefits of the
invention are found even with very small amounts of the cationic surfactant of
formula I.
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Generally there will be at least 0.01 % by weight, preferably at least 0.05%
or at least 0.1 % by
weight of the cationic surfactant in the detergent compositions of the
invention.
Preferably R1 in formula I is a hydroxyalkyl group, having no greater than 6
carbon atoms and
preferably the -OH group is separated from the quaternary ammonium nitrogen
atom by no
1o more than 3 carbon atoms. Preferred RI groups are-CH2CH20H,-CH2CH2CH20H,-
CH2CH(CH3)OH and-CH(CH3)CH20H.
--CH2CH20H and-CH2CH2CH20H are most preferred and-CH2CH20H is particularly
preferred. Preferably R2 and R3 are each selected from ethyl and methyl groups
and most
preferably both R2 and R3 are methyl groups. Preferred R4 groups have at least
6 or even at
i5 least 7 carbon atoms. R4 may have no greater than 9 carbon atoms, or even
no greater than 8 or
7 carbon atoms Preferred R4 groups are linear alkyl groups. Linear R4 groups
having from 8 to
1 I carbon atoms, or from 8 to 10 carbon atoms are preferred. Preferably each
of R2 and R3 is
selected from CI_4 alkyl and R4 is C6_I 1 alkyl or alkenyl.
2o Whilst pure or substantially pure cationic compounds are within the ambit
of this invention, it
has been found that mixtures of the cationic surfactants of formula I may be
particularly
effective. Examples of suitable mixtures include those in which the cationic
surfactant
comprises a mixture of the surfactants of formula I and at least 10%,
preferably at least 20% by
weight of the cationic surfactant has R4 which is a CS_9 alkyl or alkenyl.
Other examples
2s include surfactant mixtures in which R4 may be a combination of Cg and C10
linear alkyl
groups, or Cg and C 1 I alkyl groups. According to one aspect of the invention
a mixture of
cationic surfactants of formula I is present in the composition, the mixture
comprising from a
shorter alkyl chain surfactant of formula I and a longer alkyl chain
surfactant of formula I. The
longer alkyl chain cationic surfactant is preferably selected from the
surfactants of formula I
3o where R4 is an alkyl group having n carbon atoms where n is from 8 to 11;
the shorter alkyl
chain surfactant is preferably selected from those of formula I where R4 is an
alkyl group having
(n-2) carbon atoms. Such cationic surfactant mixtures generally comprise 5 to
95% by weight
total cationic surfactant of formula I of a longer alkyl chain length,
preferably from 30 to 90%
and most preferably at least 50% by weight of the mixture. Generally the
mixtures will contain
35 from 5 to 95% by weight, preferably from S to 70%, more preferably 35 to
65% by weight and
most preferably at least 40% by weight of shorter alkyl chain cationic
surfactant of formula I.
X in formula I may be any counterion providing electrical neutrality, but is
preferably selected
from the group consisting of halide, methyl sulfate, sulfate and nitrate, more
preferably being
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4
s selected from methyl sulfate, chloride, bromide and iodide. The halide ions,
especially chloride
are most preferred.
Linolytic Enzyme
The granular detergent compositions or component thereof in accordance with
the present
to invention also comprises a lipolytic enryme.
The weight ratio of lipolytic enryme to cationic surfactant is generally from
1:15000 to 10:1,
more preferably from 1:10000 to 5:1, most preferably from 1:5000 to 1:1, based
on % by weight
active enzyme of the detergent composition.
In the detergent compositions of the present invention, the lipolytic enzyme
component is
generally present at levels of from 0.00005% to 2% of active enzyme by weight
of the detergent
composition, preferably 0.001% to 1% by weight, most preferably from 0.0002%
to 0.05% by
weight active enzyme in the detergent composition.
Suitable lipolytic enzymes for use in the present invention include those
produced by micro-
organisms of the Pseudomonas group, such as Pseudomonas stutzeri ATCC 19.154,
as disclosed
in British Patent 1,372,034. Suitable lipases include those which show a
positive immunological
cross-section with the antibody of the lipase produced by the microorganism
Pseudomonas
Hisorescent IAM 1057. This lipase is available from Amano Pharmaceutical Co.
Ltd., Nagoya,
Japan, under the trade name Lipase P "Amano," hereinafter referred to as
"Amano-P." Other
suitable commercial lipases include Amano-CES, lipases ex Chromobacter
viscosurrr, e.g.
Chromobacter viscosum var. lipolyticum NRRLB 3673, commercially available from
Toyo Jozo
Co., Tagata, Japan; Chromobacter viscosum lipases from U.S. Biochemical Corp.,
U.S.A. and
3 o Disoynth Co., The Netherlands, and iipases ex Pseudomonas gladioli.
Especially suitable
lipases are lipases such as M1 LipaseR and LipomaxR (Gist-Brocades) and
LipolaseR and
Lipolase UltraR{Novo) which have found to be very effective when used in
combination with
the compositions of the present invention. Also suitable are the lipolytic
enzymes described in
EP 258 068, WO 92/05249 and WO 95/22615 by Novo Nordisk and in WO 94/03578, WO
95/35381 and WO 96/00292 by Unilever.
Also suitable are cutinases [EC 3.1.1.50] which can be considered as a special
kind of lipase,
namely lipases which do not require interfacial activation. Addition of
cutinases to detergent
compositions have been described in e.g. WO-A-88/09367 (Genencor); WO 90/09446
(Plant
4o Genetic System) and WO 94/14963 and WO 94/14964 (Unilever). The LIPOLASE
enzyme
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derived from Humicola lanuginosa and commercially available from Novo (see
also EPO
341,947) is a preferred lipase for use in the present invention.
Another preferred lipase for use in the present invention is D96L (ipolytic
enryme variant of the
native lipase derived from Humicola lanuginosa. Most preferably the Humicola
lanuginosa
1 o strain DSM 4106 is used.
By D96L lipolytic enzyme variant is meant the lipase variant as described in
patent application
WO 92/05249 in which the native lipase ex Humicola lanuginosa has the aspartic
acid (D)
residue at position 96 changed to Leucine (L). According to this nomenclature
said substitution
15 of aspartic acid to Leucine in position 96 is shown as : D96L. To determine
the activity of the
enzyme D96L the standard LU assay may be used (Analytical method, internal
Novo Nordisk
number AF 95/6-GB 1991.02.07). A substrate for D96L was prepared by
emulsifying glycerine
tributyrate (Merck) using gum-arabic as emulsifier. Lipase activity is assayed
at pH 7 using pH
slat. method.
The lipase enzyme or mixture of lipase enzymes may be added to the detergent
composition as a
separate ingredient {eg. in the form of a prill, granulette, stabilized
liquid, etc.) or as a mixture
with two or more lipase enzymes or lipase and an additional enryme, for
example as part of a
co-granulate.
Additional detergent components
The detergent compositions or components thereof in accordance with the
present invention may
also contain additional detergent components. The precise nature of these
additional
3 o components, and levels of incorporation thereof will depend on the
physical form of the
composition or component thereof, and the precise nature of the washing
operation for which it
is to be used.
The compositions or components thereof, of the invention preferably contain
one or more
additional detergent components selected from additional surfactants,
builders, sequestrants,
bleach, bleach precursors, bleach catalysts, organic polymeric compounds,
additional enzymes,
suds suppressors, lime soap dispersants, additional soil suspension and anti-
redeposition agents
soil releasing agents, perfumes and corrosion inhibitors.
4o Additional surfactant
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The detergent compositions or components thereof in accordance with the
invention preferably
contain an additional surfactant selected from anionic, nonionic, cationic,
ampholytic,
amphoteric and zwitterionic surfactants and mixtures thereof.
A typical listing of anionic, nonionic, ampholytic, and zwitterionic classes,
and species of these
1o surfactants, is given in U.S.P. 3,929,678 issued to Laughlin and Heuring on
December 30, 1975.
Further examples are given in "Surface Active Agents and Detergents" (Vol. I
and II by
Schwartz, Perry and Berch). A list of suitable cationic surfactants is given
in U.S.P. 4,259,217
issued to Murphy on March 3 I, 1981.
~5 Where present, ampholytic, amphoteric and zwitteronic surfactants are
generally used in
combination with one or more anionic and/or nonionic surfactants.
Anionic surfactant
In a particularly preferred embodiment of the invention, the detergent
compositions additionally
2o comprise an anionic surfactant. Any anionic surfactant useful for detersive
purposes is suitable.
These can include salts (including, for example, sodium, potassium, ammonium,
and substituted
ammonium salts such as mono-, di- and triethanolamine salts) of the anionic
sulfate, sulfonate,
carboxylate and sarcosinate surfactants. Anionic sulfate surfactants are
preferred.
25 Other suitable anionic surfactants include the isethionates such as the
acyl isethionates, N-acyl
taurates, fatty acid amides of methyl tauride, alkyl succinates and
sulfosuccinates, monoesters of
sulfosuccinate (especially saturated and unsaturated CI2-C18 monoesters)
diesters of
sulfosuccinate (especially saturated and unsaturated C6-C I4 diesters), N-acyl
sarcosinates.
Resin acids and hydrogenated resin acids are also suitable, such as rosin,
hydrogenated rosin,
3 o and resin acids and hydrogenated resin acids present in or derived from
tallow oil.
Anionic sulfate surfactant
Anionic sulfate surfactants suitable for use in the compositions of the
invention include the
linear and branched primary and secondary alkyl sulfates, alkyl
ethoxysulfates, fatty oleoyl
35 glycerol sulfates, alkyl phenol ethylene oxide ether sulfates, the CS-C17
acyl-N-(C1-C4 alkyl)
and -N-(C 1-C2 hydroxyalkyl) glucamine sulfates, and sulfates of
alkylpolysaccharides such as
the sulfates of alkylpolyglucoside (the nonionic nonsulfated compounds being
described herein).
Alkyl ethoxysulfate surfactants are preferably selected from the group
consisting of the Cg-C22
4 o alkyl sulfates which have been ethoxylated with from 0.5 to 20 moles of
ethylene oxide per
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molecule. More preferably, the alkyl ethoxysulfate surfactant is a C l l-C I
g, most preferably
C I I -C I S alkyl sulfate which has been ethoxyiated with from 0.5 to 7,
preferably from t to 5,
moles of ethylene oxide per molecule.
A particularly preferred aspect of the invention employs mixtures of the
preferred alkyl sulfate
1o and alkyl ethoxysulfate surfactants. Such mixtures have been disclosed in
PCT Patent
Application No. WO 93/18124.
Anionic sulfonate surfactant
Anionic sulfonate surfactants suitable for use herein include the salts of CS-
C20 linear
1s alkylbenzene sulfonates, alkyl ester sulfonates, C6-C22 primary or
secondary alkane sulfonates,
C6-C24 olefin sulfonates, sulfonated polycarboxylic acids, alkyl glycerol
sulfonates, fatty acyl
glycerol sulfonates, fatty oleyl glycerol sulfonates, and any mixtures
thereof.
Particularly preferred compositions of the present invention additionally
comprise an anionic
2 o surfactant, selected from alkyl sulfate and/or alkylbenzene sulphonate
surfactants of formulae II
and III, respectively:
RS O S 0 3 -M+ (II)
2s R6g03-M+ (III)
wherein RS is a linear or branched alkyl or aikenyl moiety having from 9 to 22
carbon atoms,
preferably C 12 to C 1 g alkyl or as found in secondary alkyl sulfates; R6 is
C I 0-C I 6
alkylbenzene, preferably C I I-C 13 alkylbenzene; M+ and M~+ can vary
independently and are
3o selected from alkali metals, alkaline earths, alkanolammonium and ammonium.
Particularly preferred compositions of the invention comprise both an alkyl
sulfate surfactant
and an alkyl benzene surfactant, preferably in ratios of II to III of from I
5:1 to 1:2, most
preferably from 12:1 to 2:1.
Amounts of the one or mixtures of more than one anionic surfactant in the
preferred
composition may be from 1% to 50%, however, preferably anionic surfactant is
present in
amounts of from 5% to 40% by weight of the composition. Preferred amounts of
the alkyl
sulfate surfactant of formula II are from 3% to 40%, or more preferably 6% to
30% by weight of
4o the detergent composition. Preferred amounts of the alkyl benzene
sulphonate surfactant of
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formula III in the detergent composition are from at least 1%, preferably at
least 2%, or even at
least 4% by weight. Preferred amounts of the alkyl benzene sulphonate
surfactant are up to
23%, more preferably no greater than 20%, most preferably up to 15% or even
10%.
The performance benefits which result when an anionic surfactant is also used
in the
1o compositions of the invention are particularly useful for longer carbon
chain length anionic
surfactants such as those having a carbon chain length of C 12 or greater,
particularly of C 141 S
or even up to C16-18 carbon chain lengths.
In preferred embodiments of the detergent compositions of the invention
comprising anionic
Z5 surfactant there will be a significant excess of anionic surfactants,
preferably a weight ratio of
anionic to cationic surfactant of from 50:1 to 2:1, most preferably 30:1 to 8:
I . However, the
benefits of the invention are also achieved where the ratio of cationic
surfactant to anionic
surfactant is substantially stoichiometric, for example from 3:2 to 4:3.
2 o In a preferred embodiment of the invention the essential cationic
surfactant of formula I is
intimately mixed with one or more anionic surfactants prior to addition of the
other detergent
composition components.
Anionic carboxylate surfactant
2s Suitable anionic carboxylate surfactants include the alkyl ethoxy
carboxylates, the alkyl
polyethoxy polycarboxylate surfactants and the soaps ('alkyl carboxyls'),
especially certain
secondary soaps as described herein.
Suitable alkyl ethoxy carboxylates include those with the formula RO(CH2CH20~
CH2C00-
3 o M+ wherein R is a C6 to C I g alkyl group, x ranges from O to 10, and the
ethoxylate distribution
is such that, on a weight basis, the amount of material where x is 0 is less
than 20 % and M is a
cation. Suitable alkyl polyethoxy polycarboxylate surfactants include those
having the formula
RO-(CHRI-CHR2-OrR3 wherein R is a C6 to Clg alkyl group, x is from 1 to 25, R1
and R2
are selected from the group consisting of hydrogen, methyl acid radical,
succinic acid radical,
3s hydroxysuccinic acid radical, and mixtures thereof, and R3 is selected from
the group consisting
of hydrogen, substituted or unsubstituted hydrocarbon having between I and 8
carbon atoms,
and mixtures thereof.
Suitable soap surfactants include the secondary soap surfactants which contain
a carboxyl unit
4 o connected to a secondary carbon. Preferred secondary soap surfactants for
use herein are water-
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soluble members selected from the group consisting of the water-soluble salts
of 2-methyl-1-
undecanoic acid, 2-ethyl-I-decanoic acid, 2-propyl-1-nonanoic acid, 2-butyl-1-
octanoic acid and
2-pentyl-1-heptanoic acid. Certain soaps may also be included as suds
suppressors.
Alkali metal sarcosinate surfactant
Other suitable anionic surfactants are the alkali metal sarcosinates of
formula R-CON (Rl) CH2
COOM, wherein R is a CS-C ~ ~ linear or branched alkyl or alkenyl group, R I
is a C 1-C4 alkyl
group and M is an alkali metal ion. Preferred examples are the myristyl and
oleoyl methyl
sarcosinates in the form of their sodium salts.
is Alkoxylated nonionic surfactant
Essentiaily any alkoxylated nonionic surfactants are suitable herein. The
ethoxylated and
propoxylated nonionic surfactants are preferred. Linear or branched
alkoxylated groups are
suitable.
2 o Preferred alkoxylated surfactants can be selected from the classes of the
nonionic condensates of
alkyl phenols, nonionic ethoxylated alcohols, nonionic
ethoxylated/propoxylated fatty alcohols,
nonionic ethoxylate/propoxylate condensates with propylene glycol, and the
nonionic ethoxylate
condensation products with propylene oxide/ethylene diamine adducts.
2s Nonionic alkoxvlated alcohol surfactant
The condensation products of aliphatic alcohols with from 1 to 25 moles of
alkylene oxide,
particularly ethylene oxide and/or propylene oxide, are suitable for use
herein. The alkyl chain
of the aliphatic alcohol can either be straight or branched, primary or
secondary, and generally
contains from 6 to 22 carbon atoms. Particularly preferred are the
condensation products of
3o alcohols having an alkyl group containing from 8 to 20 carbon atoms with
from 2 to 10 moles of
ethylene oxide per mole of alcohol.
Nonionic polyhydroxy fatty acid amide surfactant
Polyhydroxy fatty acid amides suitable for use herein are those having the
structural formula
a5 R2CONR1Z wherein : RI is H, Ci-C4 hydrocarbyl, 2-hydroxy ethyl, 2-hydroxy
propyl, ethoxy,
propoxy, or a mixture thereof, preferable C I-C4 alkyl, more preferably C 1 or
C2 alkyl, most
preferably C I alkyl (i.e., methyl); and R2 is a CS-C31 hydrocarbyl,
preferably straight-chain CS-
C 19 alkyl or alkenyl, more preferably straight-chain Cg-C 1 ~ alkyl or
alkenyl, most preferably
straight-chain C I I-C i ~ alkyl or alkenyl, or mixture thereof; and Z is a
polyhydroxyhydrocarbyl
4o having a linear hydrocarbyl chain with at least 3 hydroxyls directly
connected to the chain, or an
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5 alkoxylated derivative (preferably ethoxylated or propoxylated) thereof. Z
preferably will be
derived from a reducing sugar in a reductive amination reaction; more
preferably Z is a glycityl.
Nonionic fatty acid amide surfactant
Suitable fatty acid amide surfactants include those having the formula:
R6CON(R7)2 wherein
1o R6 is an alkyl group containing from 7 to 21, preferably from 9 to 17
carbon atoms and each R7
is selected from the group consisting of hydrogen, C1-C4 alkyl, C1-C4
hydroxyalkyl, and -
(C2H40}xH, where x is in the range of from 1 to 3.
Nonionic alkylpolysaccharide surfactant
Suitable alkylpolysaccharides for use herein are disclosed in U.S. Patent
4,565,647, Llenado,
issued 3anuary 21, 1986, having a hydrophobic group containing from 6 to 30
carbon atoms and
a polysaccharide, e.g., a polyglycoside, hydrophilic group containing from 1.3
to 10 saccharide
units.
2 o Preferred alkylpolyglycosides have the formula
R20(CnH2n0)t(glycosyl~
wherein R2 is selected from the group consisting of alkyl, alkylphenyl,
hydroxyalkyl,
2s hydroxyalkylphenyl, and mixtures thereof in which the alkyl groups contain
from 10 to 18
carbon atoms; n is 2 or 3; t is from 0 to 10, and x is from 1.3 to 8. The
glycosyl is preferably
derived from glucose.
Amphoteric surfactant
3o Suitable amphoteric surfactants for use herein include the amine oxide
surfactants and the alkyl
amphocarboxylic acids.
Suitable amine oxides include those compounds having the formula
R3(OR4~N0(RS)2 wherein
R3 is selected from an alkyl, hydroxyalkyl, acyiamidopropoyl and alkyl phenyl
group, or
35 mixtures thereof, containing from 8 to 26 carbon atoms; R4 is an alkylene
or hydroxyalkylene
group containing from 2 to 3 carbon atoms, or mixtures thereof; x is from 0 to
5, preferably from
0 to 3; and each RS is an alkyl or hydroxyalkyl group containing from 1 to 3,
or a polyethylene
oxide group containing from 1 to 3 ethylene oxide groups. Preferred are C 10-C
1 g alkyl
dimethylamine oxide, and C10-18 acylamido alkyl dimethylamine oxide.
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11
A suitable example of an alkyl aphodicarboxylic acid is Miranol(TM) C2M Conc.
manufactured
by Miranol, Inc., Dayton, NJ.
Zwitterionic surfactant
Zwitterionic surfactants can also be incorporated into the detergent
compositions or components
io thereof in accord with the invention. These surfactants can be broadly
described as derivatives
of secondary and tertiary amines, derivatives of heterocyclic secondary and
tertiary amines, or
derivatives of quaternary ammonium, quaternary phosphonium or tertiary
sulfonium
compounds. Betaine and sultaine surfactants are exemplary zwitterionic
surfactants for use
herein.
Suitable betaines are those compounds having the formula R(R')2N+R2C00-
wherein R is a
C6-C 1 g hydrocarbyl group, each R 1 is typically C 1-C3 alkyl, and R2 is a C
1-CS hydrocarbyl
group. Preferred betaines are C 12-18 dimethyl-ammonio hexanoate and the C 10_
I 8
acylamidopropane (or ethane) dimethyl (or diethyl) betaines. Complex betaine
surfactants are
2o also suitable for use herein.
Additional Cationic surfactants
The compositions of the invention are preferably substantially free of
quaternary ammonium
compounds of formula I but wherein one or R1, R2, R3 or R4 is an alkyl chain
group longer
than C 11. Preferably the composition should contain less than I %, preferably
less than 0.1 % by
weight or even less than 0.05% and most preferably less than 0.01 % by weight
of compounds of
formula I having a linear (or even branched) alkyl group having 12 or more
carbon atoms.
Another suitable group of cationic surfactants which can be used in the
3 o detergent compositions of the invention are cationic ester surfactants.
The cationic ester
surfactant is a compound having surfactant properties comprising at least one
ester (i.e. -COO-)
linkage and at least one cationically charged group. Preferred cationic ester
surfactants are
water dispersible.
Suitable cationic ester surfactants, including choline ester surfactants, have
for example been
disclosed in US Patents Nos. 4228042, 4239660 and 4260529.
In preferred cationic ester surfactants the ester linkage and canonically
charged group are
separated from each other in the surfactant molecule by a spacer group
consisting of a chain
4 o comprising at least three atoms (i.e. of three atoms chain length),
preferably from three to eight
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~z
atoms, more preferably from three to five atoms, most preferably three atoms.
The atoms
forming the spacer group chain are selected from the group consisting of
carbon, nitrogen and
oxygen atoms and any mixtures thereof, with the proviso that any nitrogen or
oxygen atom in
said chain connects only with carbon atoms in the chain. Thus spacer groups
having, for
example, -O-O- (i.e. peroxide), -N-N-, and -N-O- linkages are excluded, whilst
spacer groups
io having, for example -CH2-O- CH2- and -CH2-NH-CH2- linkages are included. In
a preferred
aspect the spacer group chain comprises only carbon atoms, most preferably the
chain is a
hydrocarbyl chain.
Alkalinity
In the detergent compositions of the present invention preferably an
alkalinity system is present
to achieve optimal cationic surfactant performance. The alkalinity system
comprises
components capable of providing alkalinity species in solution. Examples of
alkalinity species
include carbonate, bicarbonate, hydroxide, the various silicate anions,
percarbonate, perborates,
perphosphates, persulfate and persilicate. Such alkalinity species can be
formed for example,
2o when alkaline salts selected from alkali metal or alkaline earth carbonate,
bicarbonate,
hydroxide or silicate, including crystalline layered silicate, salts and
percarbonate, perborates,
perphosphates, persulfate and persilicate salts and any mixtures thereof are
dissolved in water.
Examples of carbonates are the alkaline earth and alkali metal carbonates,
including sodium
carbonate and sesqui-carbonate and any mixtures thereof with ultra-fine
calcium carbonate such
as are disclosed in German Patent Application No. 2,321,001 published on
November 15, 19?3.
Suitable silicates include the water soluble sodium silicates with an
Si02:NA20 ratio of from
1.0 to 2.8, with ratios of from 1.6 to 2.0 being preferred, and 2.0 ratio
being most preferred. The
3 o silicates may be in the form of either the anhydrous salt or a hydrated
salt. Sodium silicate with
an Si02:Na20 ratio of 2.0 is the most preferred silicate.
Preferred crystalline layered silicates for use herein have the general
formula
3 5 NaMSix02x+I .yH20
wherein M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number
from 0 to 20.
Crystalline layered sodium silicates of this type are disclosed in EP-A-
0164514 and methods for
their preparation are disclosed in DE-A-3417649 and DE-A-3742043. Herein, x in
the general
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13
formula above preferably has a value of 2, 3 or 4 and is preferably 2. The
most preferred
material is b-Na2Si205, available from Hoechst AG as NaSKS-6.
Water-soluble builder compound
The detergent compositions in accordance with the present invention preferably
contain a water-
1o soluble builder compound, typically present in detergent compositions at a
level of from 1% to
80% by weight, preferably from 10% to 70% by weight, most preferably from 20%
to 60% by
weight of the composition.
Suitable water-soluble builder compounds include the water soluble monomeric
i5 polycarboxylates, or their acid forms, homo or copolymeric polycarboxyiic
acids or their salts in
which the polycarboxylic acid comprises at least two carboxylic radicals
separated from each
other by not more that two carbon atoms, borates, phosphates, and mixtures of
any of the
foregoing.
z o The carboxylate or polycarboxylate builder can be monomeric or oligomeric
in type although
monomeric polycarboxylates are generally preferred for reasons of cost and
performance.
Suitable carboxylates containing one carboxy group include the water soluble
salts of lactic acid,
glycolic acid and ether derivatives thereof. Polycarboxylates containing two
carboxy groups
25 include the water-soluble salts of succinic acid, malonic acid,
(ethylenedioxy) diacetic acid,
malefic acid, diglycolic acid, tartaric acid, tartronic acid and fumaric acid,
as well as the ether
carboxylates and the sulfinyl carboxylates. Polycarboxylates containing three
carboxy groups
include, in particular, water-soluble citrates, aconitrates and citraconates
as well as succinate
derivatives such as the carboxymethyloxysuccinates described in British Patent
No. 1,379,241,
30 lactoxysuccinates described in British Patent No. 1,389,732, and
aminosuccinates described in
Netherlands Application 7205873, and the oxypolycarboxyiate materials such as
2-oxa-1,1,3-
propane tricarboxylates described in British Patent No. 1,387,447.
Polycarboxylates containing four carboxy groups include oxydisuccinates
disclosed in British
35 Patent No. 1,261,829, 1,1,2,2-ethane tetracarboxylates, 1,1,3,3-propane
tetracarboxylates and
1,1,2,3-propane tetracarboxylates. Polycarboxylates containing sulfo
substituents include the
sulfosuccinate derivatives disclosed in British Patent Nos. 1,398,421 and
1,398,422 and in U.S.
Patent No. 3,936,448, and the suifonated pyrotysed citrates described in
British Patent No.
1,439,000. Preferred polycarboxylates are hydroxycarboxylates containing up to
three carboxy
4o groups per molecule, more particularly citrates.
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14
The parent acids of the monomeric or oligomeric polycarboxylate chelating
agents or mixtures
thereof with their salts, e.g. citric acid or citrate/citric acid mixtures are
also contemplated as
useful builder components.
to Borate builders, as well as builders containing borate-forming materials
that can produce borate
under detergent storage or wash conditions are useful water-soluble builders
herein.
Suitable examples of water-soluble phosphate builders are the alkali metal
tripolyphosphates,
sodium, potassium and ammonium pyrophosphate, sodium and potassium and
ammonium
pyrophosphate, sodium and potassium orthophosphate, sodium polymeta/phosphate
in which the
degree of polymerization ranges from about 6 to 21, and salts of phytic acid.
Partially soluble or insoluble builder compound
The detergent compositions or components thereof, of the present invention may
contain a
2 o partially soluble or insoluble builder compound, typically present in
detergent compositions at a
level of from 1 % to 80% by weight, preferably from 10% to 70% by weight, most
preferably
from 20% to 60% weight of the composition.
Examples of largely water insoluble builders include the sodium
aluminosilicates.
Suitable aluminosilicate zeolites have the unit cell formula
Naz[(A102)z(Si02)y]. xH20
wherein z and y are at least 6; the molar ratio of z to y is from 1.0 to 0.5
and x is at least 5,
preferably from 7.5 to 276, more preferably from 10 to 264. The
aluminosilicate materials are
in hydrated form and are preferably crystalline, containing from 10% to 28%,
more preferably
3 o from 18% to 22% water in bound form.
The aluminosilicate zeolites can be naturally occurring materials, but are
preferably
synthetically derived. Synthetic crystalline aluminosilicate ion exchange
materials are available
under the designations Zeoiite A, Zeolite B, Zeolite P, Zeolite X, Zeolite HS
and mixtures
thereof. Zeolite A has the formula
Na 12 [(A102) 12 (Si02)12]~ X20
wherein x is from 20 to 30, especially 27. Zeolite X has the formula Nag6
[(A102)g6(Si02)106]~ 276 H20.
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Another preferred aluminosilicate zeolite is zeolite MAP builder.
The zeolite MAP can be present at a level of from I% to 80%, more preferably
from 15%
to 40% by weight of the compositions.
1o Zeolite MAP is described in EP 384070A (Unilever). It is defined as an
alkali metal
alumino-silicate of the zeolite P type having a silicon to aluminium ratio not
greater than
I .33, preferably within the range from 0.9 to 1.33 and more preferably within
the range of
from 0.9 to 1.2.
is Of particular interest is zeolite MAP having a silicon to aluminium ratio
not greater than
1.15 and, more particularly, not greater than 1.07.
In a preferred aspect the zeolite MAP detergent builder has a particle size,
expressed as a
ds0 value of from 1.0 to 10.0 micrometres, more preferably from 2.0 to 7.0
micrometres,
2o most preferably from 2.5 to 5.0 micrometres.
The ds0 value indicates that 50% by weight of the particles have a diameter
smaller than
that figure. The particle size may, in particular be determined by
conventional analytical
techniques such as microscopic determination using a scanning electron
microscope or by
2s means of a laser granulometer. Other methods of establishing ds0 values are
disclosed in
EP 384070A.
Heavv metal ion sequestrant
The detergent compositions or components thereof in accordance with the
present invention
3o preferably contain as an optional component a heavy metal ion sequestrant.
By heavy metal ion
sequestrant it is meant herein components which act to sequester (chelate)
heavy metal ions.
These components may also have calcium and magnesium chelation capacity, but
preferentially
they show selectivity to binding heavy metal ions such as iron, manganese and
copper.
35 Heavy metal ion sequestrants are generally present at a level of from
0.005% to 20%, preferably
from 0.1% to 10%, more preferably from 0.25% to 7.5% and most preferably from
0.5% to 5%
by weight of the compositions.
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76
Suitable heavy metal ion sequestrants for use herein include organic
phosphonates, such as the
amino alkylene poly (alkylene phosphonates), alkali metal ethane 1-hydroxy
disphosphonates
and nitrilo trimethylene phosphonates.
Preferred among the above species are diethylene triamine penta (methylene
phosphonate),
to ethylene diamine tri (methylene phosphonate) hexamethylene diamine tetra
(methylene
phosphonate) and hydroxy-ethylene 1,1 diphosphonate.
Other suitable heavy metal ion sequestrant for use herein include
nitrilotriacetic acid and
polyaminocarboxylic acids such as ethylenediaminotetracetic acid,
ethylenetriamine pentacetic
i5 acid, ethylenediamine disuccinic acid, ethylenediamine diglutaric acid, 2-
hydroxypropylenediamine disuccinic acid or any salts thereof. Especially
preferred is
ethylenediamine-N,N'-disuccinic acid (EDDS) or the alkali metal, alkaline
earth metal,
ammonium, or substituted ammonium salts thereof, or mixtures thereof.
2 o Other suitable heavy metal ion sequestrants for use herein are
iminodiacetic acid derivatives
such as 2-hydroxyethyl diacetic acid or glyceryl imino diacetic acid,
described in EP-A-317,542
and EP-A-399,133. The iminodiacetic acid-N-2-hydroxypropyl sulfonic acid and
aspartic acid
N-carboxymethyl N-2-hydroxypropyl-3-sulfonic acid sequestrants described in EP-
A-516,102
are also suitable herein. The ~3-alanine-N,N'-diacetic acid, aspartic acid-
N,N'-diacetic acid,
25 aspartic acid-N-monoacetic acid and iminodisuccinic acid sequestrants
described in EP-A-
509,382 are also suitable.
EP-A-476,257 describes suitable amino based sequestrants. EP-A-S 10,331
describes suitable
sequestrants derived from collagen, keratin or casein. EP-A-528,859 describes
a suitable alkyl
ao iminodiacetic acid sequestrant. Dipicolinic acid and 2-phosphonobutane-
1,2,4-tricarboxylic acid
are also suitable. Glycinamide-N,N'-disuccinic acid (GADS), ethylenediamine-N-
N'-diglutaric
acid (EDDG) and 2-hydroxypropylenediamine-N-N'-disuccinic acid (HPDDS) are
also suitable.
Organic peroxyacid bleaching_system
35 A preferred feature of detergent compositions or component thereof in
accordance with the
invention is an organic peroxyacid bleaching system. In one preferred
execution the bleaching
system contains a hydrogen peroxide source and an organic peroxyacid bleach
precursor
compound. The production of the organic peroxyacid occurs by an in situ
reaction of the
precursor with a source of hydrogen peroxide. Preferred sources of hydrogen
peroxide include
4 o inorganic perhydrate bleaches. In an alternative preferred execution a
preformed organic
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peroxyacid is incorporated directly into the composition. Compositions
containing mixtures of a
hydrogen peroxide source and organic peroxyacid precursor in combination with
a preformed
organic peroxyacid are also envisaged.
Inor; a~ nic perhydrate bleaches
o Inorganic perhydrate salts are a preferred source of hydrogen peroxide.
These salts are normally
incorporated in the form of the alkali metal, preferably sodium salt at a
level of from 1 % to 40%
by weight, more preferably from 2% to 30% by weight and most preferably from
5% to 25% by
weight of the compositions.
15 Examples of inorganic perhydrate salts include perborate, percarbonate,
perphosphate, persulfate
and persilicate salts. The inorganic perhydrate salts are normally the alkali
metal salts. The
inorganic perhydrate salt may be included as the crystalline solid without
additional protection.
For certain perhydrate salts however, the preferred executions of such
granular compositions
utilize a coated form of the material which provides better storage stability
for the perhydrate
2o salt in the granular product and/or delayed release of the perhydrate salt
on contact of the
granular product with water. Suitable coatings comprise inorganic salts such
as alkali metal
silicate, carbonate or borate salts or mixtures thereof, or organic materials
such as waxes, oils, or
fatty soaps.
2s Sodium perborate is a preferred perhydrate salt and can be in the form of
the monohydrate of
nominal formula NaB02H202 or the tetrahydrate NaB02H202.3H20.
Alkali metal percarbonates, particularly sodium percarbonate are preferred
perhydrates herein.
Sodium percarbonate is an addition compound having a formula corresponding to
30 2Na2C03.3H202, and is available commercially as a crystalline solid.
Potassium peroxymonopersulfate is another inorganic perhydrate salt of use in
the detergent
compositions herein.
3 5 Peroxvacid bleach precursor
Peroxyacid bleach precursors are compounds which react with hydrogen peroxide
in a
perhydrolysis reaction to produce a peroxyacid. Generally peroxyacid bleach
precursors may be
represented as
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18
O
X-C-L
where L is a leaving group and X is essentially any functionality, such that
on perhydrolysis the
structure of the peroxyacid produced is
O
to X-C-OOH
Peroxyacid bleach precursor compounds are preferably incorporated at a level
of from 0.5% to
20% by weight, more preferably from 1% to 15% by weight, most preferably from
1.5% to 10%
by weight of the detergent compositions.
Suitable peroxyacid bleach precursor compounds typically contain one or more N-
or O-acyl
groups, which precursors can be selected from a wide range of classes.
Suitable classes include
anhydrides, esters, imides, lactams and acylated derivatives of imidazoles and
oximes. Examples
of useful materials within these classes are disclosed in GB-A-1586789.
Suitable esters are
2o disclosed in GB-A-836988, 864798, 1147871, 2143231 and EP-A-Oi70386.
Leaving groups
The leaving group, hereinafter L group, must be sufficiently reactive for the
perhydrolysis
reaction to occur within the optimum time frame (e.g., a wash cycle). However,
if L is too
reactive, this activator will be difficult to stabilize for use in a bleaching
composition.
Preferred L groups are selected from the group consisting of:
Y R3 RSY
O ~ O ~ Y and O
/v
N-C-R1 , N N , N-C-CH-R4 ,
RS R3 Y
Y
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19
R3 Y
-O-C H=C-C H=C H2 -O-C H=C-C H=C H2
O C H -C Y O
~NR
-O-C-R~ -NwC/NRa _NwC/ a
,
II II
O O
3
R O Y
-O-C=CHRa , and -N-S-CH-Ra
R3 O
io and mixtures thereof, wherein RI is an alkyl, aryl, or alkaryl group
containing from 1 to 14
carbon atoms, R3 is an alkyl chain containing from 1 to 8 carbon atoms, R4 is
H or R3, RS is an
alkenyl chain containing from 1 to 8 carbon atoms and Y is H or a solubilizing
group. Any of
Rl, R3 and R4 may be substituted by essentially any functional group
including, for example
alkyl, hydroxy, alkoxy, halogen, amine, nitrosyl, amide and ammonium or alkyl
ammonium
i s groups.
The 3 referred solubilizing groups are+S03 M+, -C02 M+, -SO4 M+, -N+(R3)4X and
O<--
N(R )3 and most preferably -S03 M and -C02 M wherein R3 is an alkyl chain
containing
from 1 to 4 carbon atoms, M is a cation which provides solubility to the
bleach activator and X
2 o is an anion which provides solubility to the bleach activator. Preferably,
M is an alkali metal,
ammonium or substituted ammonium cation, with sodium and potassium being most
preferred,
and X is a halide, hydroxide, methylsulfate or acetate anion.
Alkyl nercarboxvlic acid bleach~recursors
2s Alkyl percarboxylic acid bleach precursors form percarboxyiic acids on
perhydrolysis. Preferred
precursors of this type provide peracetic acid on perhydrolysis.
Preferred alkyl percarboxylic precursor compounds of the imide type include
the N-,N,N IN 1
tetra acetylated alkylene diamines wherein the alkylene group contains from 1
to 6 carbon
3 o atoms, particularly those compounds in which the alkylene group contains
1, 2 and 6 carbon
atoms. Tetraacetyl ethylene diamine (TAED) is particularly preferred.
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Other preferred alkyl percarboxylic acid precursors include sodium 3,5,5-tri-
methyl
hexanoyloxybenzene sulfonate (iso-NOBS), sodium nonanoyloxybenzene sulfonate
(HOBS),
sodium acetoxybenzene sulfonate (ABS) and pentaacetyl glucose.
to Amide substituted alkyl peroxyacid precursors
Amide substituted alkyl peroxyacid precursor compounds are suitable herein,
including those of
the following general formulae:
R1CN-R2-C-L R1-N-C-R2-C-L
5 ~i
O R O or R5 O p
~s
wherein R1 is an alkyl group with from 1 to 14 carbon atoms, R2 is an alkylene
group
containing from 1 to 14 carbon atoms, and RS is H or an alkyl group containing
1 to 10 carbon
atoms and L can be essentially any leaving group. Amide substituted bleach
activator
compounds of this type are described in EP-A-0170386.
Perbenzoic acid precursor
Perbenzoic acid precursor compounds provide perbenzoic acid on perhydrolysis.
Suitable O-
acylated perbenzoic acid precursor compounds include the substituted and
unsubstituted benzoyl
oxybenzene sulfonates, and the benzoylation products of sorbitol, glucose, and
all saccharides
2s with benzoylating agents, and those ofthe imide type including N-benzoyl
succinimide,
tetrabenzoyl ethylene diamine and the N-benzoyl substituted ureas. Suitable
imidazole type
perbenzoic acid precursors include N-benzoyl imidazole and N-benzoyl
benzimidazole. Other
useful N-acyl group-containing perbenzoic acid precursors include N-benzoyl
pyrrolidone,
dibenzoyl taurine and benzoyl pyroglutamic acid.
Cationic peroxyacid precursors
Cationic peroxyacid precursor compounds produce cationic peroxyacids on
perhydrolysis.
Typically, cationic peroxyacid precursors are formed by substituting the
peroxyacid part of a
suitable peroxyacid precursor compound with a positively charged functional
group, such as an
ammonium or alkyl ammonium group, preferably an ethyl or methyl ammonium
group.
Cationic peroxyacid precursors are typically present in the solid detergent
compositions as a salt
with a suitable anion, such as a halide ion.
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z1
The peroxyacid precursor compound to be so cationically substituted may be a
perbenzoic acid,
or substituted derivative thereof, precursor compound as described
hereinbefore. Alternatively,
the peroxyacid precursor compound may be an alkyl percarboxylic acid precursor
compound or
an amide substituted alkyl peroxyacid precursor as described hereinafter
to
Cationic peroxyacid precursors are described in U.S. Patents 4,904,406;
4,751,015; 4,988,451;
4,397,757; 5,269,962; 5,127,852; 5,093,022; 5,106,528; U.K. 1,382,594; EP
475,512, 458,396
and 284,292; and in JP 87-318,332.
15 Examples of preferred cationic peroxyacid precursors are described in UK
Patent Application
No. 9407944.9 and US Patent Application Nos. 08/298903, 08/298650, 08/298904
and
08/298906.
Suitable cationic peroxyacid precursors include any of the ammonium or alkyl
ammonium
2o substituted alkyl or benzoyl oxybenzene sulfonates, N-acylated
caprolactams, and
monobenzoyltetraacetyl glucose benzoyl peroxides. Preferred cationic
peroxyacid precursors of
the N-acylated caprolactam class include the trialkyl ammonium methylene
benzoyl
caprolactams and the trialkyl ammonium methylene alkyl caprolactams.
25 Benzoxazin or anic eeroxyacid precursors
Also suitable are precursor compounds of the benzoxazin-type, as disclosed for
example in EP-
A-332,294 and EP-A-482,807, particularly those having the formula:
O
II
CEO
O ~ C-R~
'N
wherein R1, is H, alkyl, alkaryl, aryl, or arylalkyl.
Preformed or anic ~eroxyacid
The organic peroxyacid bleaching system may contain, in addition to, or as an
alternative to, an
organic peroxyacid bleach precursor compound, a preformed organic peroxyacid ,
typically at a
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2Z
level of from 1% to 15% by weight, more preferably from 1% to 10% by weight of
the
composition.
A preferred class of organic peroxyacid compounds are the amide substituted
compounds of the
following general formulae:
R~ C-N-R2C-OOH R~ -N-CR2C-OOH
O R5 O or R~ O O
wherein Rl is an alkyl, aryl or alkaryl group with from 1 to 14 carbon atoms,
R2 is an alkylene,
arylene, and alkarylene group containing from 1 to 14 carbon atoms, and RS is
H or an alkyl,
i5 aryl, or alkaryl group containing 1 to 10 carbon atoms. Amide substituted
organic peroxyacid
compounds of this type are described in EP-A-0170386.
Other organic peroxyacids include diacyl and tetraacylperoxides, especially
diperoxydodecanedioc acid, diperoxytetradecanedioic acid and
diperoxyhexadecanedioc acid.
2o Mono- and diperazelaic acid, mono- and diperbrassylic acid and N-
phthaloylaminoperoxicaproic
acid are also suitable herein.
Bleach catalyst
The compositions of the invention optionally contain a transition metal
containing bleach
25 catalyst. One suitable type of bleach catalyst is a catalyst system
comprising a heavy metal
cation of defined bleach catalytic activity, such as copper, iron or manganese
cations, an
auxiliary metal cation having little or no bleach catalytic activity, such as
zinc or aluminum
cations, and a sequestrant having defined stability constants for the
catalytic and auxiliary metal
cations, particularly ethylenediaminetetraacetic acid,
3o ethylenediaminetetra(methylenephosphonic acid) and water-soluble salts
thereof. Such catalysts
are disclosed in U.S. Pat. 4,430,243.
Other types of bleach catalysts include the manganese-based complexes
disclosed in U.S. Pat.
5,246,621 and U.S. Pat. 5,244,594. Preferred examples of these catalysts
include MnlV2(u-
35 0)3(1,4,7-trimethyl-1,4,7-triazacyclononane)2-(PF6)2, MniIl2(u-O)1(u-
OAc)2(1,4,7-trimethyl-
1,4,7-triazacyclononane)2-(C104)2, MnIV4(u-O)6(1,4,7-triazacyclononane)4-
(C104)2,
MnIIIMnIV4(u-O)1(u-OAc)2-(1,4,7-trimethyl-1,4,7-triazacyclononane)2-(C104)3,
and mixtures
thereof. Others are described in European patent application publication no.
549,272. Other
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23
ligands suitable for use herein include 1,5,9-trimethyl-1,5,9-
triazacyclododecane, 2-methyl-
1,4,7-triazacyclononane, 2-methyl-1,4,7-triazacyclononane, 1,2,4,7-tetramethyl-
1,4,7-
triazacyclononane, and mixtures thereof.
For examples of suitable bleach catalysts see U.S. Pat. 4,246,612 and U.S. Pat
5,227,084. See
1o also U.S. Pat. 5,194,416 which teaches mononuclear manganese (IV) complexes
such as
Mn(1,4,7-trimethyl-1,4,7-triazacyclononane)(OCH3)3-(PF6). Still another type
of bleach
catalyst, as disclosed in U.S. Pat. 5,114,606, is a water-soluble complex of
manganese (III),
and/or (IV) with a ligand which is a non-carboxylate polyhydroxyl compound
having at least
three consecutive C-OH groups. Other examples include binuclear Mn complexed
with tetra-N-
15 dentate and bi-N-dentate ligands, including N4MnIII(u_O)2MnIVN4)+ and
[Bipy2MnIII(u-
O)2MnIVb~PY2~'(C104)3-
Further suitable bleach catalysts are described, for example, in European
patent application No.
408,131 (cobalt complex catalysts), European patent applications, publication
nos. 384,503, and
20 306,089 (metallo-porphyrin catalysts), U.S. 4,728,455
(manganese/multidentate ligand catalyst),
U.S. 4,711,748 and European patent application, publication no. 224,952,
(absorbed manganese
on aluminosilicate catalyst), U.S. 4,601,845 (aluminosilicate support with
manganese and zinc
or magnesium salt), U.S. 4,626,373 (manganese/ligand catalyst), U.S. 4,119,557
(ferric complex
catalyst), German Pat. specification 2,054,019 (cobalt chelant catalyst)
Canadian 866,191
25 (transition metal-containing salts), U.S. 4,430,243 (chelants with
manganese cations and non-
catalytic metal cations), and U.S. 4,728,455 (manganese gluconate catalysts).
Additional Enzymes
The compositions of the present invention may comprise one or more additional
enrymes.
Preferred additional enrymatic materials include the commercially available
enrymes. Said
enzymes include enrymes selected from cellulases, hemicellulases, peroxidases,
proteases,
gluco-amylases, amylases, xylanases, phospholipases, esterases, cutinases,
pectinases,
keratanases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases,
pullutanases,
3s tannases, pentosanases, malanases,13-glucanases, arabinosidases,
hyaluronidase, chondroitinase,
laccase or mixtures thereof.
A preferred combination of additional enzymes is a cleaning composition having
a mixture of
conventional applicable enrymes such as protease, amylase, cutinase and/or
cellulase in
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z~
conjunction with one or more plant cell wall degrading enzymes. Suitable
enzymes are
exemplified in US Patents 3,519,570 and 3,533,139.
Suitable proteases are the subtilisins which are obtained from particular
strains of B. subtilis and
B. licheniformis (subtiiisin BPN and BPN'). One suitable protease is obtained
from a strain of
to Bacillus, having maximum activity throughout the pH range of 8-12,
developed and sold as
ESPERASE~ by Novo Industries A/S of Denmark, hereinafter "Novo". The
preparation of this
enzyme and analogous enzymes is described in GB 1,243,784 to Novo. Other
suitable proteases
include ALCALASE~, DURAZYM~ and SAVINASE~ from Novo and MAXATASE~~
MAXACAL~, PROPERASE~ and MAXAPEM~ (protein engineered Maxacal) from Gist-
i5 Brocades. Proteolytic enzymes also encompass modified bacterial serine
proteases, such as
those described in European Patent Application Serial Number 87 303761.8,
filed April 28, 1987
(particularly pages 17, 24 and 98), and which is called herein "Protease B",
and in European
Patent Application 199,404, Venegas, published October 29, 1986, which refers
to a modified
bacterial serine protealytic enzyme which is called "Protease A" herein.
Suitable is what is
2 o called herein "Protease C", which is a variant of an alkaline serine
protease from Bacillus in
which lysine replaced arginine at position 27, tyrosine replaced valine at
position 104, serine
replaced asparagine at position 123, and alanine replaced threonine at
position 274. Protease C is
described in EP 90915958:4, corresponding to WO 91/06637, Published May 16,
1991.
Genetically modified variants, particularly of Protease C, are also included
herein.
A preferred protease referred to as "Protease D" is a carbonyl hydrolase
variant having an amino
acid sequence not found in nature, which is derived from a precursor carbonyl
hydrolase by
substituting a different amino acid for a plurality of amino acid residues at
a position in said
carbonyl hydrolase equivalent to position +76, preferably also in combination
with one or more
3 o amino acid residue positions equivalent to those selected from the group
consisting of +99,
+101, +103, +104, +107, +123, +27, +105, +109, +126, +128, +135, +156, +166,
+195, +197,
+204, +206, +210, +216, +217, +218, +222, +260, +265, and/or +274 according to
the
numbering of Bacillus amyloliquefaciens subtilisin, as described in W095/10591
and in the
patent application of C. Ghosh, et al, "Bleaching Compositions Comprising
Protease Enzymes"
having US Serial No. 08/322,677, filed October 13, 1994.
Also suitable for the present invention are proteases described in patent
applications EP 251 446
and WO 91/06637, protease BLAP~ described in W091/02792 and their variants
described in
WO 95/23221.
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See also a high pH protease from Bacillus sp. NCIMB 40338 described in WO
93/18140 A to
Novo. Enzymatic detergents comprising protease, one or more other enzymes, and
a reversible
protease inhibitor are described in WO 92/03529 A to Novo. When desired, a
protease having
decreased adsorption and increased hydrolysis is available as described in WO
95/07791 to
Procter & Gamble. A recombinant trypsin-like protease for detergents suitable
herein is
io described in WO 94/25583 to Novo. Other suitable proteases are described in
EP 516 200 by
Unilever.
One or a mixture of proteolytic enzymes may be incorporated in the detergent
compositions of
the present invention, generally at a level of from 0.0001% to 2%, preferably
from 0.001% to
15 0.2%, more preferably from 0.005% to 0.1 % pure enryme by weight of the
composition.
The detergent compositions of the invention may also contain one or a mixture
of more than one
amylase enzyme (a and/or (3). W094/02597, Novo Nordisk A/S published February
03, 1994,
describes cleaning compositions which incorporate mutant amylases. See also
W095/10603,
2o Novo Nordisk A/S, published April 20, 1995. Other amylases known for use in
cleaning
compositions include both a- and /3-amylases. a-Amylases are known in the art
and include
those disclosed in US Pat. no. 5,003,257; EP 252,666; WO/91/00353; FR
2,676,456; EP
285,123; EP 525,610; EP 368,341; and British Patent specification no.
1,296,839 (Novo). Other
suitable amylases are stability-enhanced amylases described in W094/18314,
published August
25 18, 1994 and W096/05295, Genencor, published February 22, 1996 and amylase
variants
having additional modification in the immediate parent available from Novo
Nordisk A/S,
disclosed in WO 95/10603, published April 95. Also suitable are amylases
described in EP 277
216, W095/26397 and W096/23873 (all by Novo Nordisk).
3 o Examples of commercial a-amylases products are Purafect Ox Am~ from
Genencor and
Termamyl~, Ban~ ,Fungamyl~ and Duramyl~, all available from Novo Nordisk A/S
Denmark. W095/26397 describes other suitable amylases : a-amylases
characterised by having
a specific activity at least 25% higher than the specific activity of
Termamyl~ at a temperature
range of 25°C to 55°C and at a pH value in the range of 8 to 10,
measured by the Phadebas~ a-
amylase activity assay. Suitable are variants of the above enzymes, described
in W096/23873
(Novo Nordisk). Other preferred amylolytic enzymes with improved properties
with respect to
the activity level and the combination of thermostability and a higher
activity level are described
in W095/35382.
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26
The amylolytic enrymes if present are generally incorporated in the detergent
compositions of
the present invention a level of from 0.0001% to 2%, preferably from 0.00018%
to 0.06%, more
preferably from 0.00024% to 0.048% pure enryme by weight of the composition.
The detergent compositions of the invention may additionally incorporate one
or more cellulase
enrymes. Suitable cellulases include both bacterial or fungal cellulases.
Preferably, they will
have a pH optimum of between 5 and 12 and an activity above 50 CEVU (Cellulose
Viscosity
Unit). Suitable cellulases are disclosed in U.S. Patent 4,435,307, Barbesgoard
et al, J61078384
and W096/02653 which disclose fungal cellulases produced respectively from
Humicola
insolens, Trichoderma, Thielavia and Sporotrichum. EP 739 982 describes
cellulases isolated
is from novel Bacillus species. Suitable cellulases are also disclosed in GB-A-
2.075.028; GB-A-
2.095.275; DE-OS-2.247.832 and W095/26398.
Examples of such cellulases are cellulases produced by a strain of Humicola
insolens (Humicola
grisea var, thermoidea), particularly the Humicola strain DSM 1800. Other
suitable cellulases
2 o are cellulases originated from Humicola insolens having a molecular weight
of about SOKDa, an
isoelectric point of 5.5 and containing 415 amino acids; and a -43kD
endoglucanase derived
from Humicola insolens, DSM 1800, exhibiting cellulase activity; a preferred
endoglucanase
component has the amino acid sequence disclosed in PCT Patent Application No.
WO 91/17243.
Also suitable cellulases are the EGIII cellulases from Trichoderma
longibrachiatum described in
25 W094/21801, Genencor, published September 29, 1994. Especially suitable
cellulases are the
cellulases having color care benefits. Examples of such cellulases are
cellulases described in
European patent application No. 91202879.2, filed November 6, 1991 (Novo).
Careryme and
Celluryme (Novo Nordisk A/S) are especially useful. See also W091/17244 and
W091/21801.
Other suitable cellulases for fabric care and/or cleaning properties are
described in
3 o W096/34092, W096/17994 and W095/24471.
Peroxidase enzymes may also be incorporated into the detergent compositions of
the invention.
Peroxidasis are used in combination with oxygen sources, e.g. percarbonate,
perborate,
persulfate, hydrogen peroxide, etc. They are used for "solution bleaching",
i.e. to prevent
35 transfer of dyes or pigments removed from substrates during wash operations
to other substrates
in the wash solution. Peroxidase enzymes are known in the art, and include,
for example,
horseradish peroxidase, ligninase and haloperoxidase such as chloro- and bromo-
peroxidase.
Peroxidase-containing detergent compositions are disclosed, for example, in
PCT International
Application WO 89/099813, W089/09813 and in European Patent application EP No.
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27
91202882.6, filed on November 6, 1991 and EP No. 96870013.8, filed February
20, 1996. Also
suitable is the laccase enzyme.
Preferred enhancers are substituted phenthiazine and phenoxasine 10-
Phenothiazinepropionicacid (PPT), 10-ethylphenothiazine-4-carboxylic acid
(EPC), 10-
io phenoxazinepropionic acid (POP) and 10-methylphenoxazine (described in WO
94/12621 ) and
substituted syringates (C3-CS substituted alkyl syringates) and phenols.
Sodium percarbonate or
perborate are preferred sources of hydrogen peroxide.
Said cellulases and/or peroxidases, if present, are normally incorporated in
the detergent
i5 composition at levels from 0.0001 % to 2% of active enzyme by weight of the
detergent
composition.
Said additional enzymes, when present, are normally incorporated in the
detergent composition
at levels from 0.0001% to 2% of active enzyme by weight of the detergent
composition. The
2o additional enrymes can be added as separate single ingredients (prilis,
granulates, stabilized
liquids, etc. containing one enzyme ) or as mixtures of two or more enrymes (
e.g. cogranulates
).
25 Enzyme Oxidation Scavengers
Other suitable detergent ingredients that can be added are enzyme oxidation
scavengers which
are described in Copending European Patent application 92870018.6 filed on
January 31, 1992.
Examples of such enzyme oxidation scavengers are ethoxylated tetraethylene
polyamines.
3 o Enzyme Materials
A range of enzyme materials and means for their incorporation into synthetic
detergent
compositions is also disclosed in WO 9307263 A and WO 9307260 A to Genencor
International, WO 8908694 A to Novo, and U.S. 3,553,139, January 5, 1971 to
McCarty et al.
Enrymes are further disclosed in U.S. 4,101,457, Place et al, July 18, 1978,
and in U.S.
35 4,507,219, Hughes, March 26, 1985. Enzyme materials useful for liquid
detergent formulations,
and their incorporation into such formulations, are disclosed in U.S.
4,261,868, Hora et al, April
14, 1981. Enzymes for use in detergents can be stabilised by various
techniques. Enryme
stabilisation techniques are disclosed and exemplified in U.S. 3,600,319,
August 17, 1971,
Gedge et al, EP 199,445 and EP 200,586, October 29, 1986, Venegas. Enzyme
stabilisation
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28
systems are also described, for example, in U.S. 3,519,570. A useful Bacillus,
sp. AC 13 giving
proteases, xylanases and cellulases, is described in WO 9401532 A to Novo.
Organic poiymeric compound
Organic polymeric compounds are preferred additional components of the
detergent
1 o compositions or components thereof of the present invention, and are
preferably present as
components of any particulate component of the detergent composition where
they may act such
as to bind the particulate component together. By organic polymeric compound
is meant any
polymeric organic compound commonly used as dispersants, anti-redeposition or
soil
suspension agents in detergent compositions, including any of the high
molecular weight
~s organic polymeric compounds described as clay flocculating agents herein.
Such an organic polymeric compound is generally incorporated in the detergent
compositions of
the invention at a level of from 0.1% to 30%, preferably from 0.5% to 15%,
most preferably
from 1 % to 10% by weight of the compositions.
Examples of organic polymeric compounds include the water soluble organic homo-
or co-
polymeric polycarboxylic acids or their salts in which the polycarboxylic acid
comprises at least
two carboxyl radicals separated from each other by not more than two carbon
atoms. Polymers
of the latter type are disclosed in GB-A-1,596,756. Examples of such salts are
pofyacrylic acid
or polyacrylates of MWt 1000-5000 and their copolymers with malefic anhydride,
such
copolymers having a molecular weight of from 2000 to 100,000, especially
40,000 to 80,000.
Polymaleates or polymaleic acid polymers and salts thereof are also suitable
examples.
Polyamino compounds useful herein include those derived from aspartic acid
including
3o polyaspartic acid and such as those disclosed in EP-A-305282, EP-A-305283
and EP-A-351629.
Terpolymers containing monomer units selected from malefic acid, acrylic acid,
aspartic acid and
vinyl alcohol or acetate, particularly those having an average molecular
weight of from 1,000 to
30,000, preferably 3,000 to 10,000, are also suitable for incorporation into
the compositions of
3 5 the present invention.
Other organic polymeric compounds suitable for incorporation in the detergent
compositions of
the present invention include cellulose derivatives such as methylcellulose,
carboxymethylcellulose, hydroxypropylmethylcellulose,
ethylhydroxyethylcellulose and
ao hydroxyethylcelluiose.
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29
Further useful organic polymeric compounds are the polyethylene glycols,
particularly those of
molecular weight 1000 to 10000, more particularly 2000 to 8000 and most
preferably about
4000.
1o Cationic soil removal/anti-redeposition compounds
The detergent composition or components thereof of the invention may comprise
water-soluble
cationic ethoxylated amine compounds with particulate soiUclay-soil removal
and/or anti-
redeposition properties. These cationic compounds are described in more detail
in EP-B-
111965, US 4659802 and US 4664848. Particularly preferred of these cationic
compounds are
~5 ethoxylated cationic monoamines, diamines or triamines. Especially
preferred are the
ethoxylated cationic monoamines, diamines and triamines of the formula:
CH3 CH3
X -(- OCH2CH2)n N+- CH2 - CH2 --~ CH2)a N+- CH2CH20 ~ X
b
2 0 (CH2CH20 ~ X (CH2CH20 ~- X
wherein X is a nonionic group selected from the group consisting of H, C 1-C4
alkyl or
25 hydroxyalkyl ester or ether groups, and mixtures thereof, a is from 0 to
20, preferably from 0 to
4 (e.g. ethylene, propylene, hexamethylene) b is 2, 1 or 0; for cationic
monoamines (b=0), n is
preferably at least 16, with a typical range of from 20 to 35; for cationic
diamines or triamines, n
is preferably at least about 12 with a typical range of from about 12 to about
42.
3 o These compounds where present in the composition, are generally present in
an amount of from
0.01 to 30% by weight, preferably 0.05 to 10% by weight.
Suds suppressine system
The detergent compositions of the invention, when formulated for use in
machine washing
35 compositions, preferably comprise a suds suppressing system present at a
level of from 0.01% to
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WO 98/17768 PCT/US97/1781G
15%, preferably from 0.05% to 10%, most preferably from 0.1% to 5% by weight
of the
composition.
Suitable suds suppressing systems for use herein may comprise essentially any
known antifoam
compound, including, for example silicone antifoam compounds and 2-alkyl
alcanol antifoam
1 o compounds.
By antifoam compound it is meant herein any compound or mixtures of compounds
which act
such as to depress the foaming or sudsing produced by a solution of a
detergent composition,
particularly in the presence of agitation of that solution.
Particularly preferred antifoam compounds for use herein are silicone antifoam
compounds
defined herein as any antifoam compound including a silicone component. Such
silicone
antifoam compounds also typically contain a silica component. The term
"silicone" as used
2 o herein, and in general throughout the industry, encompasses a variety of
relatively high
molecular weight polymers containing siloxane units and hydrocarbyl group of
various types.
Preferred silicone antifoam compounds are the siloxanes, particularly the
polydimethylsiloxanes
having trimethylsilyl end blocking units.
Other suitable antifoam compounds include the monocarboxylic fatty acids and
soluble salts
thereof. These materials are described in US Patent 2,954,347, issued
September 27, 1960 to
Wayne St. John. The monocarboxyiic fatty acids, and salts thereof, for use as
suds suppressor
typically have hydrocarbyl chains of 10 to 24 carbon atoms, preferably 12 to
18 carbon atoms.
Suitable salts include the alkali metal salts such as sodium, potassium, and
lithium salts, and
3 o ammonium and alkanolammonium salts.
Other suitable antifoam compounds include, for example, high molecular weight
fatty esters
(e.g. fatty acid triglycerides), fatty acid esters of monovalent alcohols,
aliphatic C 1 g-C40
ketones (e.g. stearone) N-alkylated amino triazines such as tri- to hexa-
alkylmelamines or di- to
tetra alkyldiamine chlortriazines formed as products of cyanuric chloride with
two or three
moles of a primary or secondary amine containing 1 to 24 carbon atoms,
propylene oxide, bis
stearic acid amide and monostearyl di-alkali metal (e.g. sodium, potassium,
lithium) phosphates
and phosphate esters.
4 o A preferred suds suppressing system comprises
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31
(a) antifoam compound, preferably silicone antifoam compound, most preferably
a silicone
antifoam compound comprising in combination
(i) polydimethyl siloxane, at a level of from 50% to 99%, preferably 75% to
95%
io by weight of the silicone antifoam compound; and
(ii) silica, at a level of from 1% to 50%, preferably 5% to 25% by weight of
the
silicone/silica antifoam compound;
i5 wherein said silica/silicone antifoam compound is incorporated at a level
of from 5% to SO%,
preferably 10% to 40% by weight;
(b) a dispersant compound, most preferably comprising a silicone glycol rake
copolymer
with a polyoxyalkylene content of 72-78% and an ethylene oxide to propylene
oxide
2o ratio of from 1:0.9 to 1:1.1, at a level of from 0.5% to 10%, preferably 1%
to 10% by
weight; a particularly preferred silicone glycol rake copolymer of this type
is DC0544,
commercially available from DOW Corning under the tradename DC0544;
(c) an inert carrier fluid compound, most preferably comprising a C 16-C 1 g
ethoxylated
25 alcohol with a degree of ethoxylation of from 5 to 50, preferably 8 to 15,
at a level of
from 5% to 80%, preferably 10% to 70%, by weight;
A highly preferred particulate suds suppressing system is described in EP-A-
0210731 and
comprises a silicone antifoam compound and an organic carrier material having
a melting point
3 o in the range 50°C to 85°C, wherein the organic carrier
material comprises a monoester of
glycerol and a fatty acid having a carbon chain containing from 12 to 20
carbon atoms. EP-A-
0210721 discloses other preferred particulate suds suppressing systems wherein
the organic
carrier material is a fatty acid or alcohol having a carbon chain containing
from 12 to 20 carbon
atoms, or a mixture thereof, with a melting point of from 45°C to
80°C.
Polymeric dye transfer inhibiting agents
The detergent compositions herein may also comprise from 0.01% to 10 %,
preferably from
0.05% to 0.5% by weight of polymeric dye transfer inhibiting agents.
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32
The polymeric dye transfer inhibiting agents are preferably selected from
polyamine N-oxide
polymers, copolymers ofN-vinylpyrrolidone and N-vinylimidazole,
polyvinylpyrroiidone
polymers or combinations thereof, whereby these polymers can be cross-linked
polymers.
to
a) Polyamine N-oxide polymers
Polyamine N-oxide polymers suitable for use herein contain units having the
following structure
formula
P
(I) Ax
R
wherein P is a polymerisable unit, and
O R1 R10 O O R1
A is-C-N-, -N-C-, CO, C, -O-, -S-, -N-; x is 0 or l;
2 o R I is H or C I-6 linear or branched alkyl; or may form a heterocyclic
group with R;
R are aliphatic, ethoxylated aliphatics, aromatic, heterocyclic or alicyclic
groups or any
combination thereof whereto the nitrogen of the N-O group can be attached or
wherein the
nitrogen of the N-O group is part of these groups.
The N-O group can be represented by the following general
structures
O
1
0
(R1) x _N_(R2)Y 1
(R3)z or N_(R1 )x
3 o wherein Rl, R2, and R3 are aliphatic groups, aromatic, heterocyclic or
alicyclic groups or
combinations thereof, x or/and y or/and z is 0 or I and wherein the nitrogen
of the N-O group
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WO 98/17768 PCT/US97/17816
33
can be attached or wherein the nitrogen of the N-O group forms part of these
groups. The N-O
group can be part of the polymerisable unit (P) or can be attached to the
polymeric backbone or
a combination of both.
Suitable polyamine N-oxides wherein the N-O group forms part of the
poiymerisable unit
to comprise polyamine N-oxides wherein R is selected from aliphatic, aromatic,
aiicyclic or
heterocyclic groups. One class of said polyamine N-oxides comprises the group
of polyamine N-
oxides wherein the nitrogen of the N-O group forms part of the R-group.
Preferred polyamine
N-oxides are those wherein R is a heterocyclic group such as pyridine, N-
substituted pyrrole,
imidazole, N-substituted pyrrofidine, piperidine, quinoline, acridine and
derivatives thereof.
Other suitable polyamine N-oxides are the polyamine oxides whereto the N-O
group is attached
to the polymerisable unit. A preferred class of these polyamine N-oxides
comprises the
polyamine N-oxides having the general formula (I) wherein R is an
aromatic,heterocyclic or
alicyclic groups wherein the nitrogen of the N-O functional group is part of
said R group.
2o Examples ofthese classes are polyamine oxides wherein R is a heterocyclic
compound such as
pyridine, N-substituted pyrrole, imidazole and derivatives thereof.
The polyamine N-oxides can be obtained in almost any degree of polymerisation.
The degree of
polymerisation is not critical provided the material has the desired water-
solubility and dye-
suspending power. Typically, the average molecular weight is within the range
of S00 to
1000,000.
b) Copolymers of N-vinylpyrrolidone and N-vinylimidazole
Suitable herein are copolymers of N-vinylimidazole and N-vinylpyrrolidone
having a preferred
3 o average molecular weight range of from 5,000 to 100,000, or 5,000 to
50,000. The preferred
copolymers have a molar ratio ofN-vinylimidazole to N-vinylpyrrolidone from 1
to 0.2.
c~ Polwinvlpyrrolidone
The detergent compositions herein may also utilize polyvinylpyrrolidone
("PVP") having an
average molecular weight of from 2,500 to 400,000. Suitable
polyvinylpyrrolidones are
commercially available from ISP Corporation, New York, NY and Montreal, Canada
under the
product names PVP K-IS (viscosity molecular weight of 10,000), PVP K-30
(average molecular
weight of 40,000), PVP K-60 (average molecular weight of 160,000), and PVP K-
90 (average
molecular weight of 360,000). PVP K-15 is also available from ISP Corporation.
Other suitable
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34
polyvinylpyrrolidones which are commercially available from BASF Corporation
include
Sokalan HP 165 and Sokalan HP 12.
d) Polwinyloxazolidone
The detergent compositions herein may also utilize polyvinyloxazolidones as
polymeric dye
to transfer inhibiting agents. Said polyvinyloxazolidones have an average
molecular weight of
from 2,500 to 400,000.
e) Polwinylimidazole
The detergent compositions herein may also utilize polyvinyiimidazole as
polymeric dye
15 transfer inhibiting agent. Said polyvinylimidazoles preferably have an
average molecular weight
of from 2,500 to 400,000.
Optical bri~htener
The detergent compositions herein also optionally contain from about 0.005% to
5% by weight
20 of certain types of hydrophilic optical brighteners.
Hydrophilic optical brighteners useful herein include those having the
structural formula:
R~ R2
N H H N
N N C C N N
~N H H N
R2 S03M S~3M Ri
wherein R1 is selected from anilino, N-2-bis-hydroxyethyl and NH-2-
hydroxyethyl; R2 is
selected from N-2-bis-hydroxyethyl, N-2-hydroxyethyl-N-methylamino,
morphilino, chloro and
amino; and M is a salt-forming cation such as sodium or potassium.
3o When in the above formula, R1 is anilino, R2 is N-2-bis-hydroxyethyl and M
is a cation such as
sodium, the brightener is 4,4',-bis[(4-anilino-6-(N-2-bis-hydroxyethyl)-s-
triazine-2-yl)aminoJ-
2,2'-stilbenedisulfonic acid and disodium salt. This particular brightener
species is
commercially marketed under the tradename Tinopal-UNPA-GX by Ciba-Geigy
Corporation.
Tinopal-UNPA-GX is the preferred hydrophilic optical brightener useful in the
detergent
compositions herein.
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5 When in the above formula, R1 is anilino, R2 is N-2-hydroxyethyl-N-2-
methylamino and M is a
canon such as sodium, the brightener is 4,4'-bis[(4-anilino-6-(N-2-
hydroxyethyl-N-
methylamino)-s-triazine-2-yl)amino]2,2'-stilbenedisulfonic acid disodium salt.
This particular
brightener species is commercially marketed under the tradename Tinopal SBM-GX
by Ciba-
Geigy Corporation.
When in the above formula, R1 is anilino, R2 is morphilino and M is a cation
such as sodium,
the brightener is 4,4'-bis[(4-anilino-6-morphilino-s-triazine-2-yl)amino]2,2'-
stilbenedisulfonic
acid, sodium salt. This particular brightener species is commercially marketed
under the
tradename Tinopal AMS-GX by Ciba Geigy Corporation.
Polymeric Soil Release Agent
Known polymeric soil release agents, hereinafter "SRA", can optionally be
employed in the
present detergent compositions. If utilized, SRA's will generally comprise
from 0.01% to
10.0%, typically from 0.1% to S%, preferably from 0.2% to 3.0% by weight, of
the
2o compositions.
Preferred SRA's typically have hydrophilic segments to hydrophilize the
surface of hydrophobic
fibers such as polyester and nylon, and hydrophobic segments to deposit upon
hydrophobic
fibers and remain adhered thereto through completion of washing and rinsing
cycles, thereby
serving as an anchor for the hydrophilic segments. This can enable stains
occurring subsequent
to treatment with the SRA to be more easily cleaned in later washing
procedures.
Preferred SRA's include oligomeric terephthalate esters, typically prepared by
processes
involving at least one transesterification/oligomerization, often with a metal
catalyst such as a
3 o titanium(IV) alkoxide. Such esters may be made using additional monomers
capable of being
incorporated into the ester structure through one, two, three, four or more
positions, without, of
course, forming a densely crosslinked overall structure.
Suitable SRA's include a sulfonated product of a substantially linear ester
oligomer comprised of
3 5 an oligomeric or polymeric ester backbone of terephthaloyl and
oxyalkyleneoxy repeat units and
allyl-derived sulfonated terminal moieties covalently attached to the
backbone, for example as
described in U.S. 4,968,451, November 6, 1990 to J.J. Scheibel and E.P.
Gosselink. Such ester
oligomers can be prepared by: (a) ethoxylating allyl alcohol; (b) reacting the
product of (a) with
dimethyl terephthalate ("DMT") and 1,2-propylene glycol ("PG") in a two-stage
4 o transesterification/oligomerization procedure; and (c) reacting the
product of (b) with sodium
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36
metabisulfite in water. Other SRA's include the nonionic end-capped 1,2-
propylene/polyoxyethylene terephthalate polyesters of U.S. 4,711,730, December
8, 1987 to
Gosselink et al., for example those produced by
transesterification/oligomerization of poly-
(ethyleneglycol) methyl ether, DMT, PG and poly(ethyleneglycol) ("PEG"). Other
examples of
SILA's include: the partly- and fully- anionic-end-capped oligomeric esters of
U.S. 4,721,580,
1o January 26, 1988 to Gosselink, such as oligomers from ethylene glycol
("EG"), PG, DMT and
Na-3,6-dioxa-8-hydroxyoctanesulfonate; the nonionic-capped block polyester
oiigomeric
compounds of U.S. 4,702,857, October 27, 1987 to Gosselink, for example
produced from
DMT, methyl (Me)-capped PEG and EG and/or PG, or a combination of DMT, EG
and/or PG,
Me-capped PEG and Na-dimethyl-5-sulfoisophthalate; and the anionic, especially
sulfoaroyl,
i5 end-capped terephthalate esters of U.S. 4,877,896, October 31, 1989 to
Maldonado, Gosselink et
al., the latter being typical of SRA's useful in both laundry and fabric
conditioning products, an
example being an ester composition made from m-sulfobenzoic acid monosodium
salt, PG and
DMT, optionally but preferably further comprising added PEG, e.g., PEG 3400.
2 o SItA's also include: simple copolymeric blocks of ethylene terephthalate
or propylene
terephthalate with polyethylene oxide or polypropylene oxide terephthalate,
see U.S. 3,959,230
to Hays, May 25, 1976 and U.S. 3,893,929 to Basadur, July 8, 1975; cellulosic
derivatives such
as the hydroxyether cellulosic polymers available as METHOCEL from Dow; the C1-
C4 alkyl
celluloses and C4 hydroxyalkyl celluloses, see U.S. 4,000,093, December 28,
1976 to Nicol, et
25 al.; and the methyl cellulose ethers having an average degree of
substitution (methyl) per
anhydroglucose unit from about 1.6 to about 2.3 and a solution viscosity of
from about 80 to
about 120 centipoise measured at 20°C as a 2% aqueous solution. Such
materials are available
as METOLOSE SM 100 and METOLOSE SM200, which are the trade names of methyl
cellulose ethers manufactured by Shin-etsu Kagaku Kogyo KK.
Additional classes of SRA's include: (I) nonionic terephthalates using
diisocyanate coupling
agents to link polymeric ester structures, see U.S. 4,201,824, Violland et al.
and U.S. 4,240,918
Lagasse et al.; and (II) SRA's with carboxylate terminal groups made by adding
trimeliitic
anhydride to known SRA's to convert terminal hydroxyl groups to trimellitate
esters. With the
proper selection of catalyst, the trimellitic anhydride forms linkages to the
terminals of the
polymer through an ester of the isolated carboxylic acid of trimellitic
anhydride rather than by
opening of the anhydride linkage. Either nonionic or anionic SRA's may be used
as starting
materials as long as they have hydroxyl terminal groups which may be
esterified. See U.S.
4,525,524 Tung et al.. Other classes include: (III) anionic terephthalate-
based SRA's of the
urethane-linked variety, see U.S. 4,201,824, Violland et al.;
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37
Other optional ingredients
Other optional ingredients suitable for inclusion in the compositions of the
invention include
perfumes, colours and filler salts, with sodium sulfate being a preferred
filler salt.
Near neutral wash pH detereent formulation
While the detergent compositions of the present invention are operative within
a wide range of
wash pHs (e.g. from about 5 to about 12), they are particularly suitable when
formulated to
provide a near neutral wash pH, i.e. an initial pH of from about 7.0 to about
10.5 at a
concentration of from about 0.1 to about 2% by weight in water at 20°C.
Near neutral wash pH
formulations are better for enzyme stability and for preventing stains from
setting. In such
i5 formulations, the wash pH is preferably from about 7.0 to about 10.5, more
preferably from
about 8.0 to about 10.5, most preferably from 8.0 to 9Ø
Preferred near neutral wash pH detergent formulations are disclosed to
European Patent
Application 83.200688.6, filed May 16, 1983, J.H.M. Wertz and P.C.E. Goffinet.
Highly preferred compositions of this type also preferably contain from about
2 to about 10% by
weight of citric acid and minor amounts (e.g., less than about 20% by weight)
of neutralizing
agents, buffering agents, phase regulants, hydrotropes, enzymes, enzyme
stabilizing agents,
polyacids, suds regulants, opacifiers, anti-oxidants, bactericides, dyes,
perfumes and brighteners,
such as those described in US Patent 4,285,841 to Barrat et al., issued August
25, 1981 (herein
incorporated by reference).
Form of the compositions
The compositions in accordance with the invention can take a variety of
physical forms
3 o including granular, tablet, flake, pastille and bar and liquid forms.
Liquids may be aqueous or
non-aqueous and may be in the form of a gel. The compositions are particularly
the so-called
concentrated granular detergent compositions adapted to be added to a washing
machine by
means of a dispensing device placed in the machine drum with the soiled fabric
load.
Such granular detergent compositions or components thereof in accordance with
the present
invention can be made via a variety of methods, including spray-drying, dry-
mixing, extrusion,
agglomerating and granulation. The cationic quaternised surfactant can be
added to the other
detergent components by mixing, agglomeration (preferably combined with a
carrier material),
granulation or as a spray-dried component.
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38
The compositions in accord with the present invention can also be used in or
in combination
with bleach additive compositions, for example comprising chlorine bleach.
In one aspect of the invention the mean particle size of the components of
granular compositions
in accordance with the invention, should preferably be such that no more than
15% of the
i o particles are greater than 1.8mm in diameter and not more than 15% of the
particles are less than
0.25mm in diameter. Preferably the mean particle size is such that from 10% to
50% of the
particles has a particle size of from 0.2mm to 0.7mm in diameter.
The term mean particle size as defined herein is calculated by sieving a
sample of the
is composition into a number of fractions (typically 5 fractions) on a series
of sieves, preferably
Tyler sieves. The weight fractions thereby obtained are plotted against the
aperture size of the
sieves. The mean particle size is taken to be the aperture size through which
50% by weight of
the sample would pass.
2 o In a further aspect of the invention at last 80%, preferably at least 90%
by weight of the
composition comprises particles of mean particle size at least 0.8 mm, more
preferably at least
1.0 mm and most preferably from 1.0, or 1.5 to 2.5 mm. Most preferably at
least 95% of the
particles will have such a mean particle size. Such particles are preferably
prepared by an
extrusion process.
'The bulk density of granular detergent compositions in accordance with the
present invention
typically have a bulk density of at least 400, preferably at least 600
g/litre, more preferably from
6~0 g/litre to 1200 g/litre. Bulk density is measured by means of a simple
funnel and cup device
consisting of a conical funnel moulded rigidly on a base and provided with a
flap valve at its
lower extremity to allow the contents of the funnel to be emptied into an
axially aligned
cylindrical cup disposed below the funnel. The funnel is 130 mm high and has
internal diameters
of 130 mm and 40 mm at its respective upper and lower extremities. It is
mounted so that the
lower extremity is 140 mm above the upper surface of the base. The cup has an
overall height of
90 mm, an internal height of 87 mm and an internal diameter of 84 mm. Its
nominal volume is
500 ml.
To carry out a measurement, the funnel is filled with powder by hand pouring,
the flap valve is
opened and powder allowed to overfill the cup. The filled cup is removed from
the frame and
excess powder removed from the cup by passing a straight edged implement eg; a
knife, across
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39
its upper edge. The filled cup is then weighed and the value obtained for the
weight of powder
doubled to provide a bulk density in g/litre. Replicate measurements are made
as required.
Compacted solids may be manufactured using any suitable compacting process,
such as
tabletting, briquetting or extrusion, preferably tabletting. Preferably
tablets for use in dish
1o washing processes, are manufactured using a standard rotary tabletting
press using compression
forces of from 5 to 13 ICN/cm2, more preferably from 5 to 11ICN/cm2 so that
the compacted
solid has a minimum hardness of 176N to 275N, preferably from 195N to 245N,
measured by a
C 100 hardness test as supplied by I. Holland instruments. This process may be
used to prepare
homogeneous or layered tablets of any size or shape. Preferably tablets are
symmetrical to
15 ensure the uniform dissolution of the tablet in the wash solution.
Laundry washing method
Machine laundry methods herein typically comprise treating soiled laundry with
an aqueous
2 o wash solution in a washing machine having dissolved or dispensed therein
an effective amount
of a machine laundry detergent composition in accord with the invention. By an
effective
amount of the detergent composition it is meant from 1 Og to 3008 of product
dissolved or
dispersed in a wash solution of volume from S to 65 litres, as are typical
product dosages and
wash solution volumes commonly employed in conventional machine laundry
methods. Dosage
25 is dependent upon the particular conditions such as water hardness and
degree of soiling of the
soiled laundry.
The detergent composition may be dispensed from the drawer dispenser of a
washing machine
or may ~be sprinkled over the soiled laundry placed in the machine.
In one use aspect a dispensing device is employed in the washing method. The
dispensing
device is charged with the detergent product, and is used to introduce the
product directly into
the drum of the washing machine before the commencement of the wash cycle. Its
volume
capacity should be such as to be able to contain sufficient detergent product
as would normally
3 5 be used in the washing method.
The dispensing device containing the detergent product is placed inside the
drum before the
commencement of the wash, before, simultaneously with or after the washing
machine has been
loaded with laundry. At the commencement of the wash cycle of the washing
machine water is
4 o introduced into the drum and the drum periodically rotates. The design of
the dispensing device
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5 should be such that it permits containment of the dry detergent product but
then allows release
of this product during the wash cycle in response to its agitation as the drum
rotates and also as a
result of its contact with the wash water.
To allow for release of the detergent product during the wash the device may
possess a number
to of openings through which the product may pass. Alternatively, the device
may be made of a
material which is permeable to liquid but impermeable to the solid product,
which will allow
release of dissolved product. Preferably, the detergent product will be
rapidly released at the
start of the wash cycle thereby providing transient localised high
concentrations of product in
the drum of the washing machine at this stage of the wash cycle.
Preferred dispensing devices are reusable and are designed in such a way that
container integrity
is maintained in both the dry state and during the wash cycle. Especially
preferred dispensing
devices for use with the composition of the invention have been described in
the following
patents; GB-B-2, 157, 717, GB-B-2, 157, 718, EP-A-0201376, EP-A-0288345 and EP-
A-
0288346. An article by J.Bland published in Manufacturing Chemist, November
1989, pages
41-46 also describes especially preferred dispensing devices for use with
granular laundry
products which are of a type commonly know as the "granulette". Another
preferred dispensing
device for use with the compositions of this invention is disclosed in PCT
Patent Application
No. W094/11562.
Especially preferred dispensing devices are disclosed in European Patent
Application
Publication Nos. 0343069 & 0343070. The latter Application discloses a device
comprising a
flexible sheath in the form of a bag extending from a support ring defining an
orifice, the orifice
being adapted to admit to the bag sufficient product for one washing cycle in
a washing process.
3 o A portion of the washing medium flows through the orifice into the bag,
dissolves the product,
and the solution then passes outwardly through the orifice into the washing
medium. The
support ring is provided with a masking arrangement to prevent egress of
wetted, undissolved,
product, this arrangement typically comprising radially extending walls
extending from a central
boss in a spoked wheel configuration, or a similar structure in which the
walls have a helical
3 5 form.
Alternatively, the dispensing device may be a flexible container, such as a
bag or pouch. The
bag may be of fibrous construction coated with a water impermeable protective
material so as to
retain the contents, such as is disclosed in European published Patent
Application No. 0018678.
4 o Alternatively it may be formed of a water-insoluble synthetic polymeric
material provided with
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41
an edge seal or closure designed to rupture in aqueous media as disclosed in
European published
Patent Application Nos. 0011500, 0011501, 0011502, and 0011968. A convenient
form of
water frangible closure comprises a water soluble adhesive disposed along and
sealing one edge
of a pouch formed of a water impermeable polymeric film such as polyethylene
or
polypropylene.
Machine dishwashing method
Any suitable methods for machine dishwashing or cleaning soiled tableware,
particularly soiled
silverware are envisaged.
A preferred machine dishwashing method comprises treating soiled articles
selected from
crockery, glassware, hollowware, silverware and cutlery and mixtures thereof,
with an aqueous
liquid having dissolved or dispensed therein an effective amount of a machine
dishwashing
composition in accord with the invention. By an effective amount of the
machine dishwashing
2o composition it is meant from 8g to 60g of product dissolved or dispersed in
a wash solution of
volume from 3 to 10 litres, as are typical product dosages and wash solution
volumes commonly
employed in conventional machine dishwashing methods.
Packaging for the compositions
2 s Commercially marketed executions of the bleaching compositions can be
packaged in any
suitable container including those constructed from paper, cardboard, plastic
materials and any
suitable laminates. A preferred packaging execution is described in European
Application No.
94921505.7.
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Abbreviations used in Examples
In the detergent compositions, the abbreviated component identifications have
the following
meanings:
LAS . Sodium linear C 12 alkyl benzene sulfonate
TAS . Sodium tallow alkyl sulfate
CxyAS . Sodium C 1 x - C 1 y alkyl sulfate
C46SAS . Sodium C 14 - C 16 secondary (2,3) alkyl
sulfate
CxyEzS . Sodium C 1 x-C 1 y alkyl sulfate condensed
with z
moles of ethylene oxide
CxyEz ~ Clx-Cly Predominantly linear primary alcohol
condensed with an average of z moles of ethylene
oxide
2o QAS I . R2.N+(CH3)2(C2H40H) with R2 = Cg - C 11
linear
alkyl
QAS 2 . R2.N+(CH3)2(C2H40H) with approximately
50% R2 = Cg linear alkyl; approximately
50% R2 = C 10
QAS 3 . R2.N+(CH3)2(C2H40H) with approximately
40% R2 = C 11 linear alkyl; approximately
60% R2 = Cg linear alkyl
QAS 4 . R2.N+(CH3)2(C2H40H) with R2 = C6 linear
alkyl
QAS 5 . R2.N+(CH3)2(C2H40H) with R2 = C10 linear
alkyl
3o Soap . Sodium linear alkyl carboxylate derived
from an
80/20 mixture of tallow and coconut oils
CFAA . C 12-C 14 (coco) alkyl N-methyl glucamide
TFAA . C 16-C I 8 alkyl N-methyl glucamide
TPKFA . C 12_C 14 topped whole cut fatty acids
STPP . Anhydrous sodium tripolyphosphate
TSPP . Tetrasodium pyrophosphate
Zeolite A . Hydrated Sodium Aluminosilicate of formula
Nal2(A102Si02)12~2~H20 having a primary
particle size in the range from 0.1 to 10
4 o micrometers
Zeolite MAP . Hydrated sodium aluminosilicate zeolite
MAP
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having a silicon to aluminium ratio
of 1.07
NaSKS-6 . Crystalline layered silicate of
formula 8-
Na2 S i205
Citric acid . Anhydrous citric acid
Borate . Sodium borate
1o Carbonate . Anydrous sodium carbonate with a
particle size
between 200pm and 9001cm
Bicarbonate . Anhydrous sodium bicarbonate with
a particle
size distribution between 400~m and
1200um
Silicate . Amorphous Sodium Silicate (Si02:Na20
= 2.0:1)
Sodium sulfate Anhydrous sodium sulfate
:
Citrate . Tri-sodium citrate dihydrate of
activity 86.4%
with a particle size distribution
between 425pm
and 850pm
MA/AA . Copolymer of 1:4 maleic/acrylic acid, average
2 o molecular weight about 70,000
AA . Sodium polyacrylate polymer of average
molecular weight 4,500
CMC . Sodium carboxymethyl cellulose
Cellulose ether : Methyl cellulose ether with a degree of
polymerization ofb50 available from Shin Etsu
Chemicals
Protease . Proteolytic enryme of activity 4KNPU/g
sold by
NOVO Industries A/S under the tradename
Savinase
ao Alcalase . Proteolytic enzyme of activity 3AU/g
sold by
NOVO Industries A/S
Cellulase . Cellulytic enzyme of activity 1000
CEVU/g sold
by NOVO Industries A/S under the tradename
Carezyme
Amylase . Amylolytic enzyme of activity 120KNU/g
sold by
NOVO Industries A/S under the tradename
Termamyl 120T
Lipase . Lipolytic enzyme of activity 100KLU/g
sold
by NOVO Industries A/S under the tradename
4 o Lipolase
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Endolase . Endoglucanase enzyme of activity 3000 CEVU/g
sold by NOVO Industries A/S
PB4 . Sodium perborate tetrahydrate of nominal
formula
NaB02.3H20.H202
PB 1 . Anhydrous sodium perborate bleach of nominal
to formula NaB02.H202
Percarbonate . Sodium percarbonate of nominal formula
2Na2C03.3H202
NOBS . Nonanoyloxybenzene sulfonate in the form
of the
sodium salt
is TAED . Tetraacetylethylenediamine
Mn catalyst , MnIV2(m-O)3(1,4,7-trimethyl-1,4,7-
triazacyclononane)2(PF6)2, as described in
U.S.
Pat. Nos. 5,246,621 and 5,244,594.
DTPA . Diethylene triamine pentaacetic acid
2o DTPMP . Diethylene triamine penta (methylene
phosphonate), marketed by Monsanto under the
Tradename bequest 2060
Photoactivated bleach . Sulfonated Zinc Phthlocyanine encapsulated
in bleach
dextrin soluble polymer
25 Brightener . Disodium 4,4'-bis(2-sulphostyry)biphenyl
1
Brightener 2 . Disodium 4,4'-bis(4-anilino-6-morpholino-1.3.5-
triazin-2-yl)amino) stilbene-2:2'-disulfonate
HEDP . 1,1-hydroxyethane diphosphonic acid
EDDS ~ . Ethylenediamine-N, N-disuccinic acid
3 o QEA . bis((C2H50)(C2H40n)(CH3) -N+-C6H 12-N+ _
(CH3) bis((C2H50)-(C2H40)n), wherein n = from
20
to 30
PEGX . Polyethylene glycol, with a molecular weight
of x
PEO . Polyethylene oxide, with a molecular weight
of 50,000
35 TEPAE . Tetraethylenepentaamine ethoxylate
PVP . Polyvinyipyrolidone polymer
PVNO . Polyvinylpyridine N-oxide
PVPVI . Copolymer of polyvinylpyrolidone and
vinylimidazole
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5 SRP 1 . Sulfobenzoyl and capped esters with oxyethylene
oxy and terephtaloyl backbone
SRP 2 . Diethoxylated poly (1, 2 propylene terephtalate)
short block polymer
Silicone antifoam . Polydimethylsiloxane foam controller with
to siloxane-oxyalkylene copolymer as dispersing
agent with a ratio of said foam controller to said
dispersing agent of 10:1 to 100:1
Wax . Paraffin wax
15 In the following examples all levels are quoted as % by weight of the
composition:
Example 1
The following high density granular laundry detergent compositions A to F of
particular utility
2 o under European machine wash conditions are examples of the present
invention:
A B C D E F
LAS 8.0 8.0 8.0 8.0 8.0 8.0
C25E3 3.4 3.4 3.4 3.4 3.4 3.4
C46AS 1.0 2.0 2.5 - 3.0 4.0
C68AS 3.0 2.0 5.0 7.0 1.0 0.5
QAS 1 0.05 - - - - O,g
QAS 2 - 0.05 0.8 - - -
QAS 3 - - - I .4 1.0 -
Zeolite A 18.1 18.1 16.1 18.1 18.1 18.1
Zeolite MAP - 4.0 3.5 - - -
Carbonate 12.0 12.0 13.0 26.0 26.0 26.0
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Silicate 1.4 1.4 1.4 3.0 3.0 3.0
NaSICS-6(citric11.0 6.0 6.0 - - 12.5
acid 79:21
)
Sodium Sulfate26.1 26.1 25.0 17.1 24.1 9.1
MAIAA 0.3 0.3 0.3 0.3 0.3 0.3
CMC 0.2 0.2 0.2 0.2 0.2 0.2
PB4 9.0 9.0 9.0 9.0 9.0 9.0
TAED 1.5 1.5. 1.0 1.5 - 1.5
Mn Catalyst - 0.03 0.07 - - -
DTPMP 0.25 0.25 - 0.25 0.25 0.25
HEDP 0.3 0.3 0.2 0.2 0.3 0.3
EDDS - - 0.4 0.2
QEA 1.0 0.8 0.7 1.2 - 0.5
Protease 0.85 0.85 0.26 0.85 0.85 0.85
Amylase 0.1 0.1 0.4 0.3 0.1 0.1
Lipase 0.05 0.6 0.7 0.1 0.07 0.1
PhotoactivatedI S 15 ppm I S I S 15 ppm I S
bleach (ppm) ppm ppm ppm ppm
Brightener 0.09 0.09 - 0.09 0.09 0.09
1
Perfume 0.3 0.3 0.3 0.3 0.3 0.3
Silicone antifoam0.5 0.5 0.5 0.5 0.5 0.5
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Misc/minors
to
100%
Density in 850 850 850 850 850 850
g/litre
Examele 2
The following granular laundry detergent compositions G to I of particular
utility under
European machine wash conditions are examples of the present invention:
G H I
LAS 5.3 5.61 4.76
TAS 1.3 1.86 1.57
C45AS - 2.24 3.89
C25E3S - 0.76 1.18
C45E7 3.3 - S.0
C25E3 - 5.5 -
QAS 1 0.8 3.0 2.5
STPP I9.7 - -
Zeolite A - 19.5 19.5
Zeoiite MAP 2.0 - -
NaSKS-6/citric - 13.0 10.6
acid (79:21)
Carbonate 5.1 I 8.4 21.4
Bicarbonate - 2.0 2.0
Silicate 6.8 - -
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Sodium Sulfate 37.8 - 7.0
0.8 1.6 1.6
CMC 0.2 0.4 0.4
PB4 5.0 12.7
Percarbonate 5.0 _ 12.7
TAED 0.5 3.1
Mn Catalyst 0.04
DTPMP 0.25 0.2 0.2
HEDP - 0.3 0.3
QEA 0.9 - _
Protease 0.85 2.8 0.85
Lipase 0. I 5 0.25 0.15
Ce(lulase 0.28 0.28 0.28
Amylase 0.4 0.1 0.1
PVP 0.9 1.3 0.8
Photoactivated 15 ppm 27 ppm 27 ppm
bleach (ppm)
Brightener I 0.08 0.19 0.19
Brightener 2 - 0.04 0.04
Perfume 0.3 0.3 0.3
Silicone antifoam 0.5 2.4 2.4
Minors/misc to 1.3 I.I 0.3
100%
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Example 3
The following detergent formulations of particular utility under European
machine wash
conditions are examples of the present invention.
J K L M
Blown powder
LAS 6.0 5.0 11.0 6.0
TAS 2.0 - - 2.0
QAS 2 0.8 I.0 - -
QAS 3 - - 1.5 0.6
Zeolite A - 27.0 - 20.0
STPP 24.0 - 24.0 -
Sulfate 6.0 6.0 9.0 -
MA/AA 2.0 4.0 6.0 4.0
Silicate 7.0 3.0 3.0 3.0
CMC 1.0 1.0 0.5 0.6
QEA - - 1.4 0.5
Brightener 0.2 0.2 0.2 0.2
Silicone antifoam 1.0 1.0 1.0 0.3
DTPMP 0.4 0.4 0.2 0.4
Spray on
C45E7 - - - 5.0
C45E5 2.5 2.5 2.0 -
C45E3 2.6 2.5 2.0 -
Perfume 0.3 0.3 0.3 0.2
Silicone antifoam 0.3 0.3 0.3
Dry additives
Sulfate 3.0 3.0 5.0 10.0
Carbonate 6.0 13.0 15.0 11.0
PB 1 - - - 1.5
PB4 18.0 18.0 10.0 18.5
TAED 3.0 2.0 - 2.0
EDDS - 2.0 2.4 -
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Protease 3.25 1.0 3.25 3.25
Lipase 0.4 0.5 0.4 0.2
Amylase 0.2 0.2 0.2 0.4
Photoactivated bleach- - - 0.15
Minors/misc to 100%
5
Example 4
The following granular detergent formulations are examples of the present
invention.
Formulation N is particularly suitable for usage under Japanese machine wash
conditions.
io Formulations O to S are particularly suitable for use under US machine wash
conditions.
N O P Q R S
Blown powder
LAS 22.0 5.0 4.0 9.0 8.0 7.0
C45AS 7.0 7.0 6.0 - -
C46AS - 4.0 3.0 - - -
C45E35 - 3.0 2.0 8.0 5.0 4.0
QAS1 0.5 - - - - _
QAS 2 - 0.5 - 2.0 - 3.5
QAS 3 - - 0.8 - 3.0 -
Zeolite A 6.0 16.0 14.0 19.0 16.0 14.0
MA/AA 6.0 3.0 3.0 -
AA - 3.0 3.0 2.0 3.0 3.0
Sodium Sulfate 6.0 3.3 2.3 24.0 13.3 19.3
Silicate 5.0 1.0 1.0 2.0 1.0 1.0
Carbonate 28.3 9.0 3.0 25.7 8.0 6.0
QEA 0.4 0.4 - - 0.5 1.1
PEG 4000 0.5 - 1.5 1.0 1.5 1.0
Sodium oleate 2.0 - - - _ -
DTPA 0.4 - 0.5 - - 0.5
Brightener 0.2 0.3 0.3 0.3 0.3 0.3
Spray on
C25E5 1.0 - - - - -
C45E7 - 2.0 2.0 0.5 2.0 2.0
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Perfume 1.0 0.3 0.3 I.0 0.3 0.3
Agglomerates
C45AS - 5.0 5.0 - 5.0 5.0
LAS - 2.0 2.0 - 2.0 2.0
Zeolite A - 7.5 7.5 - 7.5 7.5
HEDP - 1.0 - - 2.0 -
Carbonate - 4.0 4.0 - 4.0 4.0
PEG 4000 - 0.5 0.5 - 0.5 0.5
Misc (water etc)- 2.0 2.0 - 2.0 2.0
Dry additives
TAED 1.0 2.0 3.0 1.0 3.0 2.0
PB4 - 1.0 4.0 - 5.0 0.5
PB1 6.0 - - - - -
Percarbonate - 5.0 12.5 - - -
Carbonate - 5.3 0.8 - 2.5 4.0
NOBS 4.5 - 6.0 - - 0.6
Cumeme sulfonic - 2.0 2.0 - 2.0 2.0
acid
Lipase 1.6 0.4 0.4 0.1 0.05 0.2
Cellulase - 0.2 0.2 - 0.2 0.2
Amylase - 0.3 0.3 - - -
Protease - 1.6 1.6 - 1.6 1.6
PVPV1 - 0.5 - - -
PVP 0.5 - _ _ _ _
PVNO - 0.5 0.5 - - -
S1ZP1 - 0.5 0.5 - - -
Silicone antifoam- 0.2 0.2 - 0.2 0.2
Minors/misc to
100%
Example 5
The following granular detergent formulations are examples of the present
invention.
Formulations W and X are of particular utility under US machine wash
conditions. Y is of
o particular utility under Japanese machine wash conditions
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Zeolite A 30.0 22.0 6.0
Sodium Sulfate 19.0 5.0 7.0
MA/AA 3.0 2.0 6.0
LAS 14.0 12.0 22.0
C45AS 8.0 7.0 7.0
QAS 1 0.7 - -
QAS 2 - 2.2 -
QAS 5 - - 1.5
Silicate - 1.0 5.0
Soap - - 2.0
Brightener 1 0.2 0.2 0.2
Carbonate 7.0 16.0 20.0
DTPMP - 0.4 0.4
Spray On - 1.0 5.0
C45E7 1.0 1.0 1.0
Dry additives
HEDP 1.0 - -
PVPVI/PVNO 0.5 0.5 0.5
Protease 3.225 3.25 3.25
Lipase 0.4 0.1 0.2
Amylase 0.1 0.1 0.1
Cellulase 0.1 0.1 0.1
TAED - 6.1 4.5
PB 1 I I .0 5.0 6.0
Sodium Sulfate - 6.0 -
Balance (Moisture and Misc.)
Example 6
The following granular detergent compositions of particular utility under
European wash
conditions were are examples of the present invention.
W X
Blown powder
Zeolite A 20.0 -
STPP - 20.0
LAS 6.0 6.0
C68AS 2.0 2.0
QAS 1 0.01
QAS.4 - 0.6
Silicate 3.0 8.0
MA/AA 4.0 2.0
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CMC 0.6 0.6
Brightener 1 0.2 0.2
DTPMP 0.4 0.4
Spray on
C45E7 5.0 5.0
Silicone antifoam 0.3 0.3
Perfume 0.2 0.2
Dry additives
Carbonate 14.0 9.0
PB 1 1.5 2.0
PB4 18.5 13.0
TAED 2.0 2.0
Photoactivated bleach15 ppm 15 ppm
Protease 1.0 1.0
Lipase 0.2 0.08
Amylase 0.4 0.4
Cellulase 0.1 0.1
Sulfate I 0.0 20.0
Balance (Moisture 10.6 5.12
and Misc.)
Density (g/litre) 700 700
Example 7
The following detergent compositions are examples of the present invention:
Y Z AA
Blown Powder
Zeolite A 15.0 15.0 15.0
Sodium Sulfate 0.0 0.0 0.0
LAS 3.0 3.0 3.0
QAS 2 1.0 - -
QAS 5 - 3.0 2.0
DTPMP 0.4 0.2 0.4
CMC 0.4 0.4 0.4
MA/AA 4.0 2.0 2.0
Agglomerates
LAS 5.0 5.0 5.0
TAS 2.0 2.0 1.0
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Silicate 3.0 3.0 4.0
QEA - 1.0 0.6
Mn Catalyst 0.03 - _
Zeolite A 8.0 8.0 8.0
Carbonate 8.0 8.0 4.0
Spray On
Perfume 0.3 0.3 0.3
C45E7 2.0 2.0 2.0
C25E3 2.0 - _
Dry additives
Citrate 5.0 - 2.0
Bicarbonate - 3.0 -
Carbonate 8.0 12.5 5.5
Percarbonate - 7.0 10.0
TAED 6.0 2.0 5.0
PB 1 14.0 7.0 8.0
EDDS - 2.0 -
~~ ofMW 5,000,000 - - 0.2
Bentonite clay - - 10.0
Protease 1.0 3.25 3.25
Lipase 0.4 0.1 1.0
Amylase 0.6 0.6 -
Cellulase 0.6 0.6
Silicone antifoam 5.0 5.0 5.0
Dry additives
Sodium sulfate 0.0 3.0 0.0
Balance (Moisture and Misc.)
to 100%
Density (g/litre) 850 850 850
Example 8
The following detergent formulations are examples of the present invention:
BB CC DD EE
LAS 20.0 14.0 24.0 22.0
QAS 1 0.7 1.0 0 0
QAS 2 - - 0.08 -
QAS 4 - - - 1.0
TFAA - 1.0 - -
C25E5/C45E7 - 2.0 - 0.5
C45E3 S - 2.5 - -
STPP 30.0 18.0 30.0 22.0
Silicate 9.0 5.0 10.0 8.0
Carbonate 13.0 7.5 - 5.0
Bicarbonate - 7.5 -
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Percarbonate - 5.0 9.0 15.0
DTPMP 0.7 1.0 - -
QEA 1 0.4 1.2 0.5 2.0
QEA 2 0.4 - _ _
SRP 1 0.3 0.2 - 0.1
MA/AA 2.0 1.5 2.0 I .0
CMC 0.8 0.4 0.4 0.2
Protease 2.6 3.25 1.6 1.6
Amylase 0.8 0.4 - -
Lipase 0.2 0.06 0.25 0.1
Cellulase 0.15 0.05 - -
Photoactivated70ppm 45ppm - lOppm
bleach (ppm)
Brightener 0.2 0.2 0.08 0.2
1
PB 1 6.0 2.0 -
HEDP - - 2.3 -
TAED 2.0 I .0 -
Balance (Moisture
and Misc.}
to 100%
Example 9
The following laundry bar detergent compositions are examples of the present
invention.
FF GG HH II JJ KK LL MM
LAS - - 19.0 15.0 21.0 6.75 8.8 -
C28AS 30.0 13.5 - - - 15.75 11.2 22.5
Sodium 2.5 9.0 - - - - - -
laurate
QAS 1 _ _ _ 0.08 - - 2.0 -
QAS 2 1.5 - 0.8 - - - -
QAS 3 - 5 - _ _ _ _ 0.1
QAS 4 - - - - 1.5 0.04 - -
QAS S - - - - - 0.04 - -
Zeolite 2.0 1.25 - - - 1.25 1.25 1.25
A
Carbonate 20.0 3.0 13.0 8.0 10.0 15.0 15.0 10.0
Calcium 21.5 - - - - - - -
carbonate
Sulfate 5.0 - - - - - - -
TSPP 5.0 - 5.0 - 5.0 5.0 2.5 5.0
STPP 5.0 15.0 - - - 5.0 8.0 10.0
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Bentonite - 10.0 - - S.0 - - -
clay
DTPMP - 0.7 0.6 - 0.6 0.7 0.7 0.7
MA/AA 0.4 1.0 - - 0.2 0.4 0.5 0.4
SRP1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Protease - 0.39 - - 0.26 - - -
Lipase 0.07 0.1 0.1 0.1 0.2 0.5 0. 0.1
S i
Amylase - - - - - - 0.1 -
Cellulase - 0.15 - - 0.15 - - -
PEO - 0.2 - 0.2 0.3 - - 0.3
Perfume 1.6 - - - _ _ _ -
