Note: Descriptions are shown in the official language in which they were submitted.
~1 67372
WO 95/03390 PCT/US94/06849
DETERGENT COMPOSITIONS INHIBITING DYE TRANSFER IN WASHING
Related Application
Field of the Invention
The present invention relates to a composition for inhiL,iling dye transfer
between fabrics during washing.
Backaround of the Invention
One of the most per~islent and troublesome pr~b!en,s arising during
modem fabric laundenng operations is the tender,cy of some colored fabrics to
release dye into the laundering solutions. The dye can then be transferred onto
other fabrics being washed therewith.
rolyv;nylpy"~'idone and other dye binding polymers have been used to
inhibit dye transfer betvlecn fabrics during laundering operations. However it has
now been found that certain polymeric agents such as polyethylene glycol or
carboxymethylcellulose cG",bined with certain dye binding polymers in specific
raffos provide an un~ eclæd improvement in the dye transfer inhibition
pe,toi",ance of deleryen~ ~",posi~ions. This cG",bnation of ingredients is very
effective in reducing the amount of dye transfer that occurs during a launderingope,alion.
Accordingly the present invention provides a dye ll anster inhibiting
cG",posilion which exhibits optimum dye l,anster inhibiting p,~,pe,lias.
Summary of the Inve. ~tiGn
The invention relates to a dye l-dnster inhibiting ~",position cG",prising:
(a) dye binding polymers selected from polyvinylpy". ;done polyamine N-oxide
conbining polymer N-vinylil"~ 'e N-vinylpy"~ one copolymer, and mixtures
thereof; and (b) polymeric agents selected from alkoxy containing polymers
cellulosic derivatives and mixtures thereof; where the ratio of polymeric agent to
dye binding poly~"er on a ppm basis delivered in the wash solution is from about2:1 to about 250:1. The invention also relates to a detergenl cG",position whichcontains the dye l,anster inhibiting composition in addition to surfactants builders
and other conventional deteryenl ingredients where the level of dye binding
polymer in the deteryent cG",position is from about 0.001% to about 10% by
weight and the level of polymeric agent in the detergel1t co",posilion is from about
0.1% to about 15% by weight. The amount of dye binding polymer delivered in
the wash solution is from about 0.01 ppm to about 120 ppm and the amount of
polymeric agent delivered in the wash solution is from about 1 ppm to about 100
ppm.
WO 95/03390 2 1 6 73 72 PCT/US94/06849
Detailed DescriPtion of the Invention
It has now been discovered that the combination of certain polymenc
agents and certain dye binding polymers, in specific ratios, delivers unexpectedly
improved dye transfer inhibition relative to the dye binding polymers alone As aresult, the dye transfer inhibition performance of a detergent composition can be
dramatically enhanced.
The dye binding polymers are selected from polyvinylpyl, ulidone,
polyamine N-oxide contain: ~9 polymer, N-vinyli",;d 'e N-vinylp~".lidone
copolymer. and mixtures thereof. These dye binding polymers are described in
o more detail hen,inbelow.
PolYvin~/lPY- ~li d o nc
The dye binding polymer can be a polyvinylpy.,~'.done (nPVP") having an
average ~ CUI^- weight of from about 5,000 to about 400,000, preferdbly from
about 5,000 to about 200,000, more p.eferably from about 5,000 to about 50,000,
and most preferdbly from about 5,000 to about 20,000. Suitable
polyv;n~lpy(..!ldones are cG""ne.cially available from GAF Co-~,Gralion, New York,
NY and Mo.~beal, Canada underthe product names PVP K-15 (average ",~lec~
weight of ~0,000), PVP K-30 (average ".~12~ r weight of 40,000), PVP K~0
(average ",o'e~ a~ weight of 160,000), and PVP K-90 (average ",o'e~ weight
of 360,000). PVP K-15 is also available from ISP Co, ~ordtion.
rolyv;nylpy.--' dones are known to persons skilled in the debrgent field; see, for
example, EP-A-262,897 and EP-A-256,696. The amount of polyvinylpy..c':done
used in the pmësent detcryent compositions is p~ferably from about 0.001% to
about 5% by weight of the dcte~5~ant, more prefer~bly from about 0.01% to about
4% by weight, more ptere~ably from about 0.05% to about 3% by weight, and most
p--ef~5-ably from about 0.1% to about 2% by weight. The amount of
pol~r;nylp~ l;done delivered in the wash solution is prefe,dbly from about 0.1
ppm to about 75 ppm, more plefeldbly from about 0.5 ppm to about 50 ppm, and
most pr~f~rably from about 1 ppm to about 25 ppm.
Polyamine N4xide Containino PolYmcr
The dye binding polymer can also be a polyamine N-oxide containing
polymer which conbins units having the fc"ow,ng structure fommula (I):
p
I
(I) Ax
I
R
wherein P is a polymerisable unit, whereto the R-N-O group can be attached or
wherein the R-N-O group forms part of the polymerisable unit or a combination of
2 1 67372
WO 95/033gO PCTIUS94/06849
both;
O O O
Il 11 11
wherein A is NC CO C -O- -S- or-N-; x is 0 or 1; and
s wherein 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 O
(R1)X N- (R2)Y =N- (R1)x
I
(R3)z
wherein R1 R2 and R3 are aliphatic groups aromatic heterocyclic or alicyclic
S groups or combinations thereof x and/or y and/or z is 0 or 1 and wi,er-~in the
ni~ogen of the N-O group 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 poly."eiisable unit (P) or can be atla- hed
to the poly."enc bac~ one or a combination of both.
Suitable polyamine N-oxides wl,erl in the N-O group forms part of the
poly."ensable unit co"~pnse polyamine N-oxides v.~,e.- in R is sele~æd from
aliphatic ."o,nalic alicyclic or h~er~c.yclic groups.
One class of said polyamine N-oxides cG",prises the group of polyamine N-
oxides wherein the nitrogen of the N-O group forms part of the R-group. R,èfe,.-~d
polyamine N oxides are those v ha.- ;n R is a he~er~ ~clic group such as pyridine
pyrrole imidæole pyrrolidine piperidine quinoline acridine and derivatives
thereof.
Another class of said polyamine N-oxides cG",prises the group of
polyamine N-oxides wl,-r_in the r,:Logen of the N-O group is dllached to the R-
group.
Other suitable polyamine N-oxides are the polyamine oxides wherèto the
N-O group is dUacl.Gd to the poly.-,erisable unit. A p~fell~J class of these
polyamine N-oxides are the polyamine N-oxides having the general formula (I)
~h,:rein R is an a-~"~ tic, heterocyclic or alicyclic group wherein the ni~ogan of
3S the N-O functional group is part of said R group.
Examples of this class are polyamine oxides wl,ere;n R is a heteroc~clic
compound such as pyridine pyrrole i",~ e and derivatives thereof.
Another prafe..ed class of polyamine N-oxides are the polyamine oxides
having the general forrnula (I) wherein R are ar~",atic hetertJcyclic or alicyclic
216~372
WO 95/03390 PCT/US94/06849
groups wherein the nitrogen of the N-O functional group is attached to said R
groups.
Examples of this class are polyamine oxides wherein R groups can be
aromatic such as phenyl.
Any polymer backbone can be used as long as the amine oxide polymer
formed is water-soluble and has dye transfer inhibiting properties. E~a",F es ofsu t-~le polymeric backbones are polyvinyls polyalkylenes polyesters polyethers
polyamide polyimides polyacrylates and mixtures thereof.
The polyamine N-oxide containing polymers of the present invention
lo typically have a ratio of amine to the amine N-oxide of 10:1 to 1:1000000.
However the amount of amine oxide groups present in the polyamine N-oxide
containing polymer can be varied by appropriale copoly,,,cfi~alion or by
app~priale degree of N-oxidation. rlefer~bly the ratio of amine to amine N-oxideis from 2:3 to 1:1000000. More pref~rably from 1:4 to 1:1000000 most prcferably
from 1:7 to 1:1000000. The polymers of the present invention actually enco",passrandG", or block copolymers where one ",onG"~er type is an amine N-oxide and
the other ",GnG"~er type is either an amine N-oxide or not. The amine oxide unitof the polyamine N-oxides has a PKa c 10 p,efefably PKa ~ 7 more prcfel,æd
PKa ~ 6.
The polyamine N-oxide conbining polymer can be obtained in almost any
degree of poly",eli~a~on. The degree of poly."a"~ation is not critical provided the
" ,aterial has the desired water-solubility and dye-suspending power.
Typically the average ",o ee~ weight of the polyamine N-oxide
containing poly."ar is within the range of 500 to 1 000 000; p,cfe,~bly from 1 000
to 50 000 more p,cf~,ably from 2 000 to 30 000 most p,cfe~ably from 3 000 to
20 000.
The amount of polyamine N-oxide containing poly."er used in the present
deter~ent c4.,-FQ~itions is pr~ferably from about 0.005% to about 5% by weight of
~e det~rgent, more prefe.ably from about 0.01% to about 3% by weight and most
p~ef --ably from about 0.02% to about 1.6% by weight. The amount of polyamine
N-oxide cQntaining poly."er delivered in the wash solution is prcfe,ably from about
0.01 ppm to about 30 ppm more prefcrdbly from about 0.05 ppm to about 20
ppm more p,eferably from about 0.1 ppm to about 10 ppm and most preferably
from about 0.1 ppm to about 5 ppm.
35 N-v;n~liu.id--ole Nl v;nYl~ lid~ Col~olYcr
The dye binding poly. "er can also be an N-vinyli" ,~ e N-
vinylp~",. .done copolymer having an average ",olec~ weight range from about
5000-1 000000 pfeférably from about 20000-200000. Highly pr~fe"~d
polymers having an excellent overall detergency pe,ro""ance have an average
2 1 67372
WO 95/03390 PCT/US94/06849
molecular weight range from 5 000 to 50 000 more preferably from 8 000 to
30 000 most preferably from 10 000 to 20 000. The average molQcul~r weight
range was determined by light scattering as described in Barth H.G. and Mays J.
W. Chemical Analysis Vol. 113 "Modem Methods of Polymer Characleri~alion".
The N-vinyli,r,id-~ole N-vinylpyrrolidone copolymer of the present invention
has a molar ratio of N-vinyli.,. ~ 'e to N-vinylpy"~lidone from 1 to 0.2 more
preferably from 0.8 to 0.3 most preferably from 0.6 to 0.4. The N-vinyli",i
N-vinylp~ lid~ne copolymers can be linear or branched.
The amount of N-vinyli",.~-cle N-vinylpy"-'.d~ne poly."er used in the
o present deteryenl compositions is prefê(ably from about G.005% to about 5% by
weight of the detargellt more prefe...bly from about 0.01% to about 3% by weightand most prefêrably from about 0.02% to about 1.6% by weight. The amount of
N-vinylimidazole N-vinylpy,.~l,done polymer delivered in the wash solubon is
preferably from about 0.01 ppm to about 30 ppm more prefe.dbly from about 0.05
ppm to about 20 ppm more preferdbly from about 0.1 ppm to about 10 ppm and
most p.eferdbly from about 0.1 ppm to about 5 ppm.
The polymeric agents which are cG,nb.ned with the dye binding poly."era in
the p,esen~ cG",positions are select~d from alkoxy containing poly."e.a cellulosic
derivatives and mixtures thereof. These polymeric agents are desc.ibad in more
20 detail hereinbelo~.
AlkoxY Containino Polv."~ . ~
The alkoxy containing polymen (i.e. polymers having alkoxy "DieLes) can includecopoly."eric blocks of ethylene ~erèphU,alale and polyéU,~le~ne oxide or
poly~,rupylene oxide t~réphU,ald~e and the like. The most p(erelled alkoxy
2~ containing poly.-,e.a include poly~thJlena glycol or poly~ pJlene glycol and
derivatives thereof. Particularly pref~..ed is poly~thJlena glycol (~PEG") having an
av~.~gc .n~'e~ weight from about 500 to about 100,000 p,~ferably from about
1,000 to about 50 000 more p,~fe.dbly from about 1 500 to about 10 000 and
most prefe.dl,ly from about 1 500 to about 4 000. rolyelhJlan.. glycol is prepa,ed
30 in a known ,-,annEr by subjecting etl"rlene glycol to a polycondansation p,ucess;
thus the poly_U"~l~na glycol may be .ega--Jed as the condensdtion poly."er of
ethylene oxide or 0~,yl~na glycol with water. The general structure is: HO-(-CH2-
CH2-O)n-H. Suitable poly_ll,ylene glycols are cG"""a~ially available from Union
Carbide Chemicals and rlastics Co. Inc. Danbury CT. The polyethylene glycol
3s can be added as a sepa,alè ingredient or as part of a combined ingredient (e.g. a
co-flake containing about 99% polyethylene glycol and about 1% suds
suppressGr).
Another suitable alkoxy containing polymer is a copolymer having random
blocks of ethylene ~erep~,ll,alate and polyethylene oxide (PEO) terephtala~e. More
WO 95/03390 2 1 6 7 3 7 2 PCT/US94/06849
specifically these polymers are comprised of repeating units of ethylene
terephthalate and PEO terephthalate in a mole ratio of ethylene terephthalate
units to PEO terephthalate units of from 25:75 to 35:65 said PEO terephthalate
units containing polyethylene oxide having molecular weights of from 300 to 2000.
The molecular weight of this polymer is in the range of from 3 000 to 55 000.
Another s~litable alkoxy containing polymer is a polyester with repeating
units of ethylene terephll ,alale containing 10-15% by weight of ethylene
~ereph~l ,alate units together with 90-80% by weight of polyoxyethylene
~erephthalate units derived from a polyoxyethylene glycol of average ",o es~
o weight 300-5 000 and the mole ratio of ethylene terephll,alate units to
polyoxyethylene tertphtl,alate units in the poly."eric compound is bet~ecn 2:1
and 6: 1.
Other alkoxy containing polymers are compounds of fommula:
O O O O
ll ll ll ll
X-(OCH2CH2)n [oC-R1-Co-R2)U(-oc-R3 - CO-R2)V]
O O
Il 11
oC-R4-C~(CH2CH20)n-X
wherein the R1 ",o.et;es are all 1 4-phenylene ",~iet;es; the R2 ",0 et:es are
essentially ethylene ",D;eLes 1 2-propylene ,.,o:eLes or mixtures thereof; the R3
.-,~.e~es are suhstit~ted 1 3-phenylEne ."o ~Les having the s~hstituent
O O O
Il 11 11
2s -CO [(R2-oGR4-Co] w (CH2CH20)n-X
at the S posiUon; the R4 ".o.et:es are R1 or R3 -,o et;es or mixtures ll,ereof each
X is ethyl or pr~fel~tly methyl; each n is from 12 to 43; when w is 0 u + v is from 3
to 10; when w is at least 1 u ~ v ~ w is from 3 to 10. ~efellèd block polyestersare those where v is 0 i.e. the linear block polyestqrs. For these p,dfe..ed linear
30 block polyesters, u typically ranges from 3 to 8, especially for those made from
dimethyl t~r~phU-alab ethylene glycol (or 1 2-propylene glycol) and methyl
capped poly~lhylene glycol. The most water soluble of these linear block
polyestcrs are those where u is from 3 to 5.
Other alkoxy containing polymers suitable for the present invention are
3s alkoxyldted polyamines. Such malèrials can conveniently be represented as
",o!e~u les of the empirical stnuctures with repeating units:
2 1 67372
WO 95/03390 PCT/US94/06849
[N R] n Amine form
I
(alkoxy)y
and R 1
s
[N+ R! n nX~ Quaternized form
(alkoxy)y
Wherein R is a hydrocarbyl group, usually of 2-6 carbon atoms; R1 may be a C1-
o C20 hydrocarbon; the alkoxy groups are ethoxy, propoxy, and the like, and y is 2-
30, most prefe,dbly from 10-20; n is an integer of at least 2, preferably from 2-20,
most p~efe(ably 3-5; and X~ is an anion such as halide or methylsulfate, resulting
from the quate" ,i~ation reaction.
The amount of alkoxy containing polymers used in the present de~ergenl
15 compositions is prefcrably from about 0.2% to about 8% by weight of the
detergan~, more prèferably from about 0.3% to about 6% by weight~ and most
p,ete,dbly from about 0.4% to about 4% by weight. The amount of alkoxy
containing polymers delivered in the wash solution is pfeferdbly from about 3 ppm
to about 90 ppm, more pmëfelclbly from about 5 ppm to about 80 ppm, and most
20 prefe,c,bly from about 10 ppm to about 70 ppm.
Cellulosic De.i~at;~/~s
The cellulosic derivatives for use as polymeric agents in the present dye
bc".sfer inhibiting co,.,F~s;tions are water-soluble cellulosic derivatives which
include the alkali metal salts of a ca,l,oxy lower alkyl cellulose having up to 3
25 ca,L,ons in the alkyl group, such as the sodium and pot~ssium salts of
c~.Lox~meU-~lcellulose or of c~,Lo~.~U jl~e"ulose. Sodium
ca,boxjmethylcellulose is p~efelled. Suitable water-soluble cellulosic derivatives
also include the lower alkyl cellulose ethers, e.g., methyl cellulose and ethyl
cellulose; hydroxyalkyl cellulose ethers, e.g., hydroxyethyl cellulose; cellulose
30 ethane sulfonic acid; and cellulose glycollic acid.
The amount of cellulosic derivatives used in the present detergant
CGI I ,positions is prefe, ably from about 0.2% to about 8% by weight of the
de~aryênt, more prèferably from about 0.3% to about 6% by weight, and most
p~ferably from about 0.4% to about 4% by weight. The amount of ce"~l~sic
35 derivatives delivered in the wash solution is prefe,..bly from about 3 ppm to about
- 90 ppm, more preferably from about 5 ppm to about 80 ppm, and most preferably
from about 10 ppm to about 70 ppm.
As discussed above, it has su" ,isingl~ been discovered that by co",bin ~9
the polymeric agents with the dye binding polymers in certain ratios, an
WO 95/033g0 2 1 6 7 3 7 2 PCT/US94/06849
unexpected improvement in dye transfer inhibition is obtained. -The ratio of
polymeric agent to dye binding polymer on a ppm basis delivered in the wash
solution is from about 2:1 to about 250:1. When polyvinylpyrrolidone is used as
the dye binding polymer the ratio of polymeric agent to dye binding polymer on appm basis delivered in the wash solution is preferably from about 2:1 to about
50:1 more preferably from about 3:1 to about 20:1 more preferably from about
3:1 to about 10:1 and most preferably from about 4:1 to about 8:1. When
polyamine N-oxide containing polymer and/or N-vinyli ,~ -!e N-vinylp~".!,done
copolymer are used as the dye binding polymer the ratio of polymeric agent to
o dye binding polymer on a ppm basis delivered in the wash solution is preferably
from about 3:1 to about 150:1 more prefe(ably from about 3:1 to about 100:1 and
most p~ferably from about 4:1 to about 75:1.
The present dye l,ansfer inhibiting co"~posi~ions are conveniently used as
additives to conventional deter~ent cG",posilions for use in laundry oparations.The present invention also enco,npasses deterg-~nt composi~ions containing the
dye ~ansfer inhibiting co",pGsitions along with corventional dete.~ent ingredients.
ret~rao~t l~a.~.~ s~ta
A w;de range of su,ra~.lants can be used in the deteraent composilions. A
typical listing of an ~n ~ non on - a,.,pholytic and ~J i:lenon.~ classes and species
of these su,faclants is given in U.S. Patent 3 664 961 issued to Norris on May 23
1972.
Mixtures of anionic s~"fa~ lar,ts are pa ticularly suitable herein especially
mixtures of sulphor.~te and sulphate s~"fac~--nls in a weight ratio of from 5:1 to
1:2 pl~fe.dbly from 3:1 to 2:3 more prefe.dbly from 3:1 to 1:1. P~efe,,ed
2s sulphonates indude alkyl benzen.5 sulphonat-~s having from 9 to 15 especially 11
to 13 carbon atoms in the alkyl radical and the alpha-sulphonated methyl fatty
acid esters in which the fatty acid is derived from a C12-C18 fatty source
p,~r~fably from a C16-C18 fatty source. In each inslanca the cation is an alkalimetal prefcl~bly sodium. F~efe"ed sulphate su,r~ ts are alkyl sulphates
having from 12 to 18 carbon atoms in the alkyl radical optionally in admixture with
ethoxy sulphates having from 10 to 20 pr~ferdbly 10 to 16 carbon atoms in the
alkyl radical and an average degree of ethoxylation of 0.1 to 9. Examples of
plefe"ed alkyl sulphates herein are tallow alkyl sulphate coconut alkyl sulphateand C14.1s alkyl sulphates. The cation in each inslance is again an alkali metal3s cation preferc-bly sodium.
One class of non.on.o surfactants useful in the present invention are
condensates of ethylene oxide with a hydrophobic moiety to provide a su,faclant
having an average hydrophilic 'ipoph 'is balance (HLB) in the range from 8 to 17preferably from 9.5 to 13.5 more preferably from 10 to 12.5. The hydrophobic
2 1 6 7372
WO 95/03390 PCT/US94/06849
(lipophilic) moiety may be aliphatic or aromatic in nature and the length of thepolyoxyethylene group which is condensed with any particular hydrophobic group
can be readily adjusted to yield a water-soluble compound having the desired
degree of balance between hydrophilic and hycl~phobic elements Fspeci~ly
preferred nonionic surfactants of this type are Cg-C1s primary alcohol ethoxylates
containing 3-9 moles of ethylene oxide per mole of alcohol, particularly the C14-
C1~ primary alcohols containing 6-9 moles of ethylene oxide per mole of alcohol
and the Ct2-C1s primafy alcohols containing 3-9 moles of ethylene oxide per
mole of alcohol.
o Another class of non ~n ~ surfactants co,npnses alkyl polyglucoside
compounds of general formula
RO (CnH2nO)tZx
wherein Z is a moiety derived from glucose; R is a saturated h~rdl~phO~ c alkyl
group that contains from 12 to 18 ca bon atoms; t is from 0 to 10 and n is 2 or 3; x
IS iS from 1.3 to 4, the compounds including less than 10% u(,-,ac~ed fatty alcohoi
and less than 50% short chain alkyl polygluco~idcs Compounds of this type and
their use in dehrgenl are ~;scl~sed in EP-B 0,070,077, 0,075,996 and 0,094,118.
Also suitab~e as non-~n.c surfactants are polyhy~l~o,~y fatty acid amide
s~-- raclant~ of the formula
R2-C-N-Z,
Il I
o R1
æ.-,;n R1 is H, or R1 is C14 hlJ~ca,~l, 2~hydroxy ethyl, 2-hydroxy propyl or a
miA~re thereof, R2 is C~31 h~d-oca.~l, and Z is a polyhyJ~Ayhydr~
having a linear l.~d~uc~.~Jl chain with at least 3 h~J~A~I~ direct)y conne.,led to
the chain, or an alkoxylated derivative thereof. Preferably, R1 is methyl, R2 is a
straight C11.1s alkyl or alkenyl chain such as coconut alkyl or mixtures thereof,
and Z is derived from a reducing sugar such as glucose, fructose, maltose,
se, in a reductive amination reaction.
The co.-.positions according to the p-`S'G.lt inv¢ntion may fur~er cG-np.ise
a builder system. Any conve-~tional builder system is suitable for use herein
including aluminosilicate ",at~rials, phas~l;Jt~s, silicates, polyc~oxylales, fatty
acids, materials such as ell,~lencdid.nine t~ t~-, and mebl ion seques~.a,lts
such as aminopolyphosphor,ates.
Suitable builders can be an inGryan c ion e3~hang~ ,.,atenal, ~""nonl~ an
i.,o~an c hydrated aluminosilicate ,naterial, more particularly a hydrated synthetic
zeolite such as hydrated zeolite A~ X, 8 or HS.
Another suitable ino,yanic builder material is layered silicate, e.g., SKS-6
(~loechs~). SKS~ is a crystalline layered silicate cûn3;~ting of sodium silicate
WO 95/03390 2 1 6 7 3 7 2 PCT/US94/06849
(Na2Si2os)
Suitable polycarboxylate builders for use herein include nitrilotnacetate
(NTA); ethylenediaminetetracetic acid (EDTA); citric acid preferably in the form of
a water-soluble salt; and derivatives of succinic acid of the formula R-
CH(COOH)CH2(COOH) wherein R is C10 20 alkyl or alkenyl preferably C12 16~
or wherein R can be sl ~bstihlted with hydroxyl sulfo sulfoxyl or sulfone
substituents. Specific exa",rles include lauryl succinate myristyl succinate
palmityl succinate 2-~odecenylsuccinate 2-tetradecenyl succinate. Succinate
builders are preferably used in the form of their water-soluble salts including
0 sodium potassium a"""on um and alkanola"""on -~m salts.
Especially for the liquid executiQn herein suitable fatty acid builders for use
herein are saturated or unsaturated C10~18 fatty acids as well as the
cG"-asponding soaps. rlefelled saturated species have from 12 to 16 carbon
atoms in the alkyl chain. The prere"ed unsaturated fatty acid is oleic acid.
Another plefellèd builder system for liquid cG"~positions is based on dodecen~
succinic acid.
Prërellèd builder systems for use in granular CG",pOsit;ons indude a
mixture of rJTA phosphate and zeolite.
Other builder materials that can form part of the builder system for use in
granular cG",pGsitions for the purposes of this invention include ino,~an-c
",atenals such as alkali metal ca,LGnates bica,L,or,dtes silicates, and organic
",dtênals such as the organic pl,Gsphor,dtes amino polyalkylene phosphonates
and amino polyca,l,oxylates. Other suitable water-soluble organic salts are the
homo- or co-poly.--e ic adds of their salts in which the polyca,loxylic acid
2s cG."prises at least two ca,l,oxyl radicals separted from each other by not more
than two carbon atoms. roly."era of this type are d;sclosed in GB-A-1 596 756.
Examples of such salts arr~ polyacrylates of MW 2000-5000 and their copolyme.a
with maleic anhydride, such copoly",e. a having a ",o eou'-~ weight of from 20 000
to 70 000 especially about 40 000.
Builder~ are normally included in amounts of from about 10% to about 30%
by weight of the d&ter~ent CG",FCS tion p~eferably from about 20% to 70% and
more prèfe,ably from about 30% to about 60%.
Other cG",ponenls used in d-~tergent cGIIlpGsitions may be employed such
as suds booating or dep~esaing agents er,~."es such as proteases amylases or
lipases e"~."e stabilizers or activators bleaching agents soil-suspending
agents soil-release agents fabric softening agents optical bright~nera abrasivesbaclcri~d;~s tamish inhibitors c~, ~ ring agents and perfumes. Especially
pr~fei,ed are comb.nations v~rith enzyme technologies which also provide a type of
color care benefit for example cellulase for color maintenance/rejuver,alion.
1 0
WO 95/033g0 2 1 6 7 3 7 2 PCT~Sg4l0684g
The detergent compositions according to the invention can be in liquid gel
paste or granular forms. Granular compositions will generally have a density from
about 300 9/l to about 900 9/l. "Compact" granular detergents can have a
relatively higher density than conventional granular detergents; in such case the
5 detergent compositions will contain a lower amount of "inorganic filler salt" (e.g.
sodium sulfate) compared to conventional granular detergents typically not more
than 20% filler salt.
The present invention also reiates to a process for inhibiting dye t,ansfer
from one fabric to another of solubilized and suspended dyes encountered during
o fabric laundanng opeldtions involving colored fabrics. The process co",pnses
contacling fabrics with a laundenng solution containing the dye t~anster inhibiting
cG",position of this invention. The process of the invention is conven enlly carried
out in the course of the washing p,ucess. The washing process is prefeidbly
carried out at 1C to 90C especially 5C to 60C. The pH of the ~edtl"en~
15 solution is ~referably from about 7 to about 12 especially from about 8 to abou~
11.
The following examples are meant h exemplify cGIllpGsitions of the
presen~ invenbon but are not necess-~-ily meant to limit or oU,rrv,is~ define the
scope of the invention said SCOpQ being determined according to claims which
20 follow.
E~a,.."le 1
A granular laundry de~ergent co",pesition of the p,..sent invention is as
s:
Inaredient: Weioht
r~ t
Crutched
Sodium C1~ ~ linear alkylL,anzene sulfonate 12.2%
Sodium C1~1~ alkyl sulfate 12.2%
Tetrasodium p~.oph~ sphat-~ 7.2%
Nitrilv0iace-~t.~s (active) 19.5%
Sodium ca~L~onJta 13 0%
Sodium silicate solids 6.1%
Optical Dr;~l ,tonar 0. 1 %
Zeolites (active) 4.7%
35 De-Dust
Condensation product of C12 C13 linear alcohol with 6.5 moles 0.8%
ethylene oxide
Dry-Adds
1 1
WO 95/03390 2 1 6 7 3 7 2 PCTIUS94/06849
Polyvinylpyrrolidone 0 5%
Polyethylene glycol 3 9%
Protease enzyme 0. 1 %
Perfume o 5%
S Zeolites (active) 1.2%
Cellulase enzyme 0 9%
The "cnutched" ingredients are mixed together with water in a crutcher to forrn a
paste. This mixture is then spray dried to evapG,~le the excess moisture and form
deteryenl granules. Then the de-dust is sprayed onto the granules. The "dry-add"10 ingredients are then ad",ixed to form the finished granular dete,yrn~ cGIllpGsiUon.
This co",position delivers in the wash solution about 37 ppm polyethylene
glycol and about 5.1 ppm polyvinylpyrrolidone (a ratio of about 7.5:1 PEG:PVP).
The pH of a 1% aqueo~Js solution of the deter~enl co",position is 11.
ExamPle 2
The fo"~ing exa",r'e illustrates the invention and facilitates its
unders~anding.
1. In a Miniwasher pot of 2 U.S. gallons of 35C water 61 grams of delergent
are added. The mixture is agitated for 1 minute.
2. The dye source is added under agi~tion and allowed to mix for 1 minute.
20 3. A total of twelve tracer swatches are added to the Miniwasher pot and
washed for 10 minutes. These swatches had previously been balanced by
Hunter Colorimeter L,a b values so that all swatches of a specific type were
starting unifommly for each ~at",en~
4. After the wash cyde is complete the tracer swatches are rinsed in cold water
(7C).
. Steps 1-5 are r~pe~1-d seven Umes for a total of 8 wash cycles using a new
measu,~..,Ent of dete.~ent a new dye source and the same 12 tracer
swatches for each wash cycle.
6. After wash cycle number 1 4 and 8 the tracer swatches are dried for 1 hour
and then L a b readings are taken on the Hunterlab C~!cri",eter and a delta
E (dE) at that cycle is calculated.
DYe Source
C46 Brown Swatch - 3 swatches of 2.5" x 2.5" square are added per pot per
cycle.
35 Tracer Swatches
4 - 86% Conon/15% Polye:tcr Terry (loop yam is 100% Cotton)
4-100% Cotton Denim
~ 2
WO 95/03390 2 1 6 7 3 7 2 PCT/US94/06849
4 - 100% Cotton Interlock T-shirt
Condition
8 grains per gallon water hardness
35C wash water temperature
5 7C rinse water temperature
Miniwasher of 2 U.S. gallon capacity
Results
The f~l'ow;ng bble shows that when the PVP level is cut by approximately
25% in conjunction with the PEG level being increased by nine times, subslantialo dye t(ar,s~er inhibition is acl-:eved. Lower delta E (dE) readings represent less
color change from the original fabric color.
Cl,an e ir dE on Terry Fabric
T-e ~.. ent PEG 8000 PVP K-15 PEG-PVP dE
Ratio
CYcle 1 CYCI~ 4 Cycle 8
A 5.1ppm 11.75ppm 1:2.3 1.63 7.06 11.52
B 46ppm 8.82ppm 5.2:1 0.81 1.51 3.14
As a result, it app;~a,~ that PEG:PVP ratios dominated by higher PEG amounts
deliver more dye t,ansrer inhibition.
Fxa.-,-~le 3
The granular laundry detergent cG-"position of the present invenUon is
made as described in Example 1, except that 3.9% sodium
carboxymethylcellulose is used instead of 3.9% polyell ,ylene glycol as the
poly..,eric agent.
