Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
WO 95121233 PCTIUS9~/01257
2 ~ 82672
AClUEOUS CLEANING COMPOSITIONS CONTAINING A 2-ALKYL ALKANOL, H2O
AN ANIONIC AND A LOW HLB NONIONIC
Technical field
The present invention relates to the ~ield of mulU-purpos9 deaning r~ 15
Indlaed, the present invention relates l~o the cleaning of different surfaces such as
hard-surfaces, carpets or to any laundly ,~ " " )s including stains ~._L. ' ,~ "~.
Backqround
A v~ide variety of cleaning .,u,, r, "' ~S have been eA~., .~'y described in the art
Typically, cleaning w,, r "' ~S ca 1 be divided into hard surfaoe cleaning
COIll~uûai~iul)S and laundry cleaning culll~JûaiLul,s. Cleaning wlllr- " " of these
two types are ~, '" I~I'y very differ~ant in fommulation and are sold as different
products with different marketing co~cepts These differences impose on the
consumer to have to purchase and use at least two different products.
Furthermore, wlllr- " ,s of the t~vo types above, especially hard surface
cleaners, can be divided into sub-tyF)es Indeed, many different kinds of hard-
surface cleaners are available, for inslance bathroom cleaners, kitchen cleaners or
floor cleaners
W095/21233 2 1 8 2 6 7 2 PCT/I~S9SJ012~7
This variety in fommulation is rendered necessary by the difference in nature
between the soils which can be found on laundry and on various surfaces in
kitchens, floors and bathroom. For instance, kitchen soils compnse mainly edibleoils, while bathroom soils compnse mainly sebum and soap scum, also limescale;
floor soils comprise mainly particulate soils and laundry may have many different
soils and stains.
However, there is a trend for the u~.ulOp~ell~ of cleaning w.,., "' .,s with better
,ru""d"ce in several rQsped, i.e. multi-purpose liquid deaners which can be
used on various surfaces as well as in laundry , r~ 51 to dean
various soils and stains. Such multi-purpose w" ,, ~ s are, for example,
disclosed in European patent application, EP-A-598973. Indeed, this patent
application discloses cw,,., "' 15 comprising hydrogen peroxide with a fully
nonionic system, i.e. at least one nonionic with an HLB above 15, at least one
nonionic with an HLB of from 13 to 15, at least one nonionic with an HLB of from 9
to 13 and at least one nonionic with an HLB below 9. This patent application further
discloses the use of 2-alkyl alkanols as suds suppressors in said w,, r ~ i~ ~S
But, it has been found that such ..p~ s comprising hydrogen peroxide, a 2-
alkyl alkanol and as the surfactant system, a spedfic nonionic system of at least
four nonionic surfactants having different HLB (I,,d.~,~ull''' lipophilic balance) as
defined herein before, do not ~ rrleet consumer's needs. Indeed, such
w,,l, "),)5 based on a fully nonionic surfactant system and comprisin3 a high
level of I~Jd~u?llulJi~. surfadants were found to have poor ~elrull"a""e on somekind of stains in laundry application. Although such ll,JIuplluLic nonionic
surfadants have good grease cutting properties and are particularly effective ongreasy soils having l,JlluulluLic charader, such as mineral oii and soap scum
when used in hard surface cleaning ..., "' ~, it has been found that when said
l l~ll u,ul ~uL ic nonionic surfadants are used in laundry:,, " " ,s bleachable stains
are not ~ " ' ' il~ bleadhed. The wettability of the fabncs stains is seriously
affected by the IIJdluphobi~ of the nonionic system of said w"."osi~iu,~s, i.e.
good contact between hydrogen peroxide and the stains on said fabric is prevented
resulting thereby in poor ~ffu""a"c~ on bleachable stain. Also, it has been
found that there is a problem associated with the use of such i~yl~Ji~llL~, i.e.IlJllupllu~i~ nonionic surfactants and 2-alkyl alkanols, in that they may cause the
final product to appear hazy, indicating insolubility and phase separation.
~ W095~21233 2 1 8 2 6 7 2 PCT/US95/012~;7
1~ i5 thus an objed oF the present invenUon to fonmulate a mulb-purpose liquid
cleaner which can be ' ' ' i,y l~sed on vanous surfaces as well as in laundry
r, ' ' _ )5, to clean vanou5 soils and stains. It is a further object of the present
invention to provide such a cu"" " .) which is a clear co~ ,U_:'iJ" in a broad
range of temperature, e.g. up to 50'C. The cu,,,r " ~s according to the present
invenUon should also be able to pelfomm in a variety of condiUons, i.e. in hard and
soft water as well as when used neat or dilukd. They should also provide
satisfadory shine pelrull"a"ce an~ surface safety when used as hard surface
deaners.
In other words, it is an objed of t~le present invenbon to provide a multi-purpose
aqueous wll.r- " ~ providing imploved laundry p_,~u,,,,~,,~ on bleadhable stainsand other hydrophilic stains while clelivering also outstanding gr~ase cleaning to a
variety of surfaces as well as to laulldry application.
It has now been found Uhat Uhese objeds can be efficiently met by fommulating a
deaning cù"",o~i~ion whidh compnses hydrogen peroxide, a 2-alkyl alkanol and a
specific surfactant system comprising at least a IIJlluplluL;,, surfactant having an
HLB (h,llu~,l, ' Iipûphilic balance) below 14, prefenably a nonionic surfactant, and
at least an anionic surfactanL pre erably an alkyl sulphate. Indeed, it has beenfound that by combining these~ four ingredients a mulU-purpose deaning
wll.r , is provided v~hidh exhibits a ~rea~ flexibility in the soils it may dean. It
has been found that said wlllr ' n delivers stronger deaning ~,ru" ~ce
especially in laundry,, ' - ,s, i.e. said -.. r -- 1I gives goûd p~,ru""d,~-æ on
bleadhing ll~lluph ' stains as well as on removing greasy stains.
It has also been found that 2-alkyl alkanols strengthen the effect of a given
l,,9lupl,~bic surfactant system in temms of grease cleaning pe,ru""d"cd. More
particularly, for any given deaning c~ comprising a ll~lluphûbic surfactant
and which provides a given greasy deaning p~,fu". ,~ to a surface treated
therewith, adding a 2-alkyl alkanol will improve said greasy cleaning p~,ru""d"~Furthermore, it has surprisingly been found that the use of a 2-alkyl alkanol together
with a I~Jd~uyllObic nonionic sulfactant having an HLB below 14 results in a
synergeUc effect on greasy cleaning.
wo 95121233 2 ~ 8 2 6 72 PCT/USgS/01257
An advantage of the present ~ s is that the suds profile of the
ccl~ Is herein is particularly suibble for hard surface applicabon where
having the nght level of suds is critical. Indeed, an advantage of bhe present
invention is that the surface nnsing is facilitated. A further advantage of bhe present
invention is that a very cost effedive mulb-pur,oose deaning w"~ is provided
with excellent p~Olllldll~ in hard surface cleaninQ applicabon, carpet cleaning
application and in laundry application.
Cleaning w,,lr ~ " ,s comprising 2-alkyl alkanols have been described in the art.
DE 4û 21 265 discloses bhat alcohols brandhed in 2-posibon are effective suds
suppressors. This patent application discloses cu/r~ comprising a 2-alkyl
alkanol togebher with nonionic ~t. IUA~ ' ' ' alcohols having fatty alcohol dhain length
of from 13 to 17 and a degree of ~' ,u~ of from 3 to 7- No ~ S
comprising bleach are disdosed. Also, bhis patent applicabon does nowhere
disclose bhe benefits in temms of grease cleaning r~ F~ ~ ,~ associated wibh theuse of a 2-alkyl alkanol together wibh a I ,,~r~ ~,huLic surfadant.
EP-A- 593 841 disdoses w~u, " la comprisin~ a surfacdant and, as a sudssuppressing system, bhe cwlllLill ", of brandhed alcohols, e.g. 2-alkyl alkanols,
and silicons oils. Different types of surfadants are disdosed indudinQ broadly
defined anionic, nonionic, cationic and '' io,~i~, surfacdants. This patent
applicabon does nowhere disdose that said wll.r ' ~s may further comprise
bleaches, let alone hydrogen peroxide. Also, this patent application does nowhere
disdose the benefit in tenms of grsase deaning assodated with bhe use of a 2-alkyl
alkanol in w"ILil ~ " , wibh I IJdl u"~luLi-, surfadants.
European patent applicabon n 9387û215.6, disdoses w"c~:"tl ' ' cleaning
cu,,,r " )s based on short chain surfadants comprising a C6-C10 alkyl chain as
their I~Jd~upl)uLic portion. This patent application discloses 2-alkyl alkanols to
control suds. This patent application menbons that said short chain surfactants
provide sbbility to the Wlllp " Ia comprising them and that they siy,.i' ,~ly
boost bhe overall cleaning p~, ru""~"~,e, espedally grease cleaning. But, this patent
application does not mention that 2-alkyl alkanols boost l,J~Iupl)ùLic surfactants
ability to clean grease. Also this patent application mentions bleach as an optional
ingredient, but nowhere mention hydrogen peroxide.
wo 95/21233 2 1 8 2 6 7 2 pr~/usssl01257
EP-A-598973. already mentioned hl~ liJ~'ul~, discioses c~ s compnsing
hydrogen peroxide, 2-alkyl alkanol and as surfactant, a fuily nonionic system, i.e. at
least one nonionic with an HLB above 15, at ieast one nonionic with an HLB of from
13 to 15, at least one nonionic witil an HLB of from 9 to 13 and at least one
nonionic with an HLB below 9. However, it is mentioned in this patent application
that the cc,lllr - " s disdosed therein do not require the use of anionic surfactant
system and that said ~- r ~ Ia ale preferably free of anionic surfactants. Also,this patent application does nowhr~re disciose the beneht in terms of grease
cleaning associated with the use of a 2-alkyl alkanol in c~",bill ~ with
hyJ, uplloi,i~, nonionic surfactants.
SummarY of the invention
The present invention ~n~""~asse~ an aqueous ci~aning CU",r ", comprising
hydrogen peroxide, or a source thl~reof, a 2-alkyl alkanol or mixtures thereof, a
hyd,u~l,uiJic surfactant having an HLB below 14, or mixtures thereof, and an
anionic surfadant.
The present invention ~ u ~ the use, in an aqueous cieaning wlllr "
of a 2-alkyl alkanol togetherwith a ll~llu~JIIui ic surfactant havinD an HLB below 14,
or mixtures thereof, to improve the cJreasy deaning ~_.Full,,d,~c~, of said
u c/lllr
Detailed descnrnion of the invention
The ~u~ s according to the present invention are aqueous cleaning
c~ s. Said cu",r " Ia comprise hydrogen peroxide, or a source thereof,
a 2-alkyl alkanol, or mixtures thereof, a i-,~l,ui l,oi ic surfactant having an HLB
below 14 and an anionic surfactant. The cU,~ si~;o"s of the present invention are
particulariy efficient in cieaning a vanety of different soils, and significant
coop~, " 1 has been observed br~tween the four ingredients. Indeed, the present
C~ S ciean a variety of sclils, from pariiculate to non-particulate soils, from
. ...... . .... .. _ .. _ _ _
wos5/2~233 6 2 ~ 82672 PCT/US95101257
hydrophiliC to h,d~u,~hoL,ic soils and are particularly suitable for laundry application
on both hydrophobic and hydrophilic fabr7c.
As a first essential ingredient, the ~ " )s of the present invention compnse
hydro3en peroxide, or a water soluble source thereof. In the preferred ~",bu~i",a,~L,
the ~ F " ~s according to the present invention compr7se hydrogen peroxide.
Typically, the c~ i 15 suitable to be used herein compr7se from û.5% to 2û%
by weight of the total .,ul~lr~ o~ hydrogen peroxide, or a source thereof,
preferably from 2% to 15% and most preferably from 3% to 1û%. Indeed, the
presence of hydrogen peroxide provides strong cleaning benefits which are
particularly noticeable in laundry ~,), 'i ~ ,s. Furthemmore, the ~u",~ of the
present invenUon, i.e. surfactants together with 2-alkyl alkanols, for use in cleaning
C~ 5 is l-~..ldlkd~y compatible with hydrogen peroxide in that good
hydrogen peroxide storage stability was observed for said cu,,,r " ~s, even in the
absence of hydrogen peroxide stabili~ers.
As a second essential ingredient, the CU" ,r - " ,, of the present invention
comprise a 2-alkyl alkanol, or mixtures thereof. Particularly suitable to be used in
the present invention are the 2-alkyl alkanols having an alkyl chain compnsing from
8 to 16 carbon atoms, preferably from 8 to 12 and a temminal hydroxy group, saidalkyl chain being substituted in the a position by an alkyl chain compr7sing from 1 to
10 carbon atoms, preferably from 2 to 8 and more preferabiy 3 to 6. Such suitable
compounds are C~1""7f~ available, for instance, in the Isofol~D ser7es such as
Isofol~ 12 (2-butyl octanol) or Isofol E9 16 (2-hexyl decanol).
Typically, the cu,,,r- - ,s suitable to be used herein comprise from û.05 % to 2 %
by weight of the total ~,OIllr ~ " 1 of a 2-alkyl alkanol, or mixtures thereof, preferably
from û.1 % to 1.5 % and most preferably from û.2 % to û.8 %.
As a third essential ingredient, the ~ rr ,~ of the present invention comprise aIIJ.~Iu,ul~ûLJi., surfactant having an HLB (Il,ll`u,ul~' lipophilic balance) below 14, or
mixtures thereof. In the cu",r ~ according to the present invention, said
h~ ù~,l,oLic surfactant and said 2-alkyl alkanol act together, particularly on greasy
soils such as the kitchen dirt soils and the bathtub soils. It is thus possible to use low
total levels of said IIJJ~u~ul~ùLJic surfactant, or mixtures thereof. The ~ulll,uu~iLul1s
according to the present invention compnse from û.1% to 15h by weight of the t~l
~ WO 95121233 2 1 8 2 6 7 2 PCT/IJS9~/012~7
c~ p~iLiol~ of said hydrophobic surfaldant, or mixtures thereof, preferably from 0.3
% to 10 % and more preferably ~rom ~.4 % to 6 % .
Particulariy suitable to be used herein are the l,~JIuul~uLiu nonionic surfadants
having an HLB below 14, preferably rlonionic surfadants havins an HLB below 12,
more preferably below 11.5, and most preferabiy below 10. Yet the highly preferred
nonionic surfactants according to the present invention have an HLB below 9.
Those ll~llùpllubi~, nonio~ic surfadants have been found to provide good grease
cutting properties.
Suitable i-,,J~uphûL,ic nonionic surfactants to be used herein are fatty alcoholeUIu~.~' and/or ,u,upu~: - which are ,u,~ available with a variety of
fatty alcohol chain lengths and a variety of eU~ùA~' ~ degrees. Indeed, the HLB
values of sudh " ,: ' ' nonionic surfadants depend essentially on the dhain
length of the fatty alcohol, the nature of the " ~ and the degree of
llu~ull~bic surfadants tend to have a low degree of 5"
and a long dhain fatty alcohol. S~lriadants catalogs are available whidh list a
number of surfadants, including nl~nionics, together v~ith their respective HLB
values.
Suitable dhemical processes for preparing the l~ u,uI,~,i k, nonionic surfadants for
use herein indude cu"der~r ~ of ~,o~5~,uu~uil'g alcohols with alkylene oxide, inthe desired ~ ,po,iions. Sudh procLsses are well known to the man skilled in theari and have been eAt~ y des~ribed in the art. As an altemative, a great
variety of " .~' ' ' alcohols suitrlble for use herein is cu,,,,,,_,~ _'I, available
from vanous suppliers.
Preferred I IJJl upl~ûbi~, nonionic slJrfadants to be used in the r - ~ s
according to the present invention l3re surfadants having an HLB below 14 and
being according to the fommula RO-(C2H4O~n(C3H6O)mH, wherein R is a C6 to
C22 alkyl chain or a CO to C28 alkyl benzene chain, and wherein n+m is from 0 to20 and n is from 0 to 15 and m is from 0 to 20, preferably n+m is from 1 to 15 and,
n and m are from 0.5 to 15, more preferably n+m is from 1 to 10 and, n and m arefrom 0 to 10. The preferred R cilains for use hereirl are the Cg to C22 alkyl
chains. Accordingly suitable IIJd~u~.-l.lL,ic nonionic suriactants for use herein are
Dobanol R 51-2.5 (HLB= 8.1; R is ~3 mixture of C9 and C11 alkyl chains, n is 2.5and m is 0), or Lutensol R TO3 (HLE3=8; R is a C13 alkyl chains, n is 3 and m is 0),
. ..... ..... .. . ... .. .. . .. . _ . .... . .
wo 95nl233 2 1 8 2 6 7 2 PCT/US95/01257
or Lutensol R AO3 (HLB=8; R is a mixture of C13 and C1s alkyl chains, n is 3 andm is 0), or Tergitol R 25L3 (HLB= 7.7; R is in the range of C12 to C1 5 alkyl chain
length, n is 3 and m is 0), or Dobanol R 23-3 (HLB=8.1; R is a mixture of C12 and
C13 alkyl chains, n is 3 and m is 0), or Dobanol R 23-2 (HLB=6.2; R is a mixtureof C12 and C13 alkyl chains, n is 2 and m is 0), or Dobanol R 23-6.5 (HLB=11.9; R
is a mixture of C12 and C13 alkyl dhains, n is 6.5 and m is 0), or Dobanol R 25-7
(HLB=12; R is a mixture of C12 and C1s alkyl dhains, n is 7 and m is 0), or
Dobanol R 91_5 (HLB=11.6; R is a mixture of Cg and C11 alkyl chains, n is 5 and
m is 0), or Dobanol R 91-6 (HLB=12.5; R is a mixture of Cg and C11 alkyl chains,n is 6 and m is 0), or Dobanol R 91-8 (HLB=13.7; R is a mixture of Cg and C11
alkyl chains, n is 8 and m is û), or mixtures thereof. Preferred herein are
Dobanol R 91-2.5, or Lutensol R TO3, or Lutensol R AO3, or Tergitol R 25L3, or
Dobanol R 23-3, or Dobanol R 23-2, or mixtures thereof. These DobanolR
surfactants are w~ 'J available from SHELL. These LutensolR surFactants
are w..,-,,_.d~ available from BASF and these Tergitol R surfactants are
~ available from UNION CARBIDE.
As a fourth essenbal ingredient, the ~ of the present invenbon comprisean anionic surfactant, or mixtures thereof. Said anionic surfadants which are
hydrophilic compounds act together with the h,~r~, hù~i~, surfadants sudh as to
c0vllt~lLdal~ t'ne negative effedt of l,,~ JI,vLi~, surfadants. Said ânionic
surfactants act as wetting agent, i.e. in laundry applicabon they wet the stains on the
fabrics, especially on hydrophilic fabrics, and thus help hydrogen peroxide to perfomm
its bleaching action thereby cu,, ' ~ to improved laundry pel fu" ,w on
bleadhable stains. Furthemmore, the anionic surfactants of the present invenUon
allow to obtain dear l,ulllr ' ,s even when said wll~ compnse
IIJd~u~ullvvil i~ di~ - sudh as 2-alkyl alkanols and ll,d~vplluvic surfactants. The
w,,,, " ~s according to the present invenbon compnse from 0.1 % to 20 % by
weight of the total ~ull.r ' ~ of said anionic surfactant, or mixturr~s thereof,preferably from 0.2 % to 10 % and more preferably from 0.5 % to 8 % .
Particularly suitable to be used in the present invention are sulfonate and sulfate
surfactants. The like anionic surfactants are well-known in the art and have found
wide application in cv~ u~e~l detergents. These anionic surfactants include the C8- ~'
C22 alkyl benzene sulfonates (LAS), the C8-C22 alkyl sulfates (AS), Ul~r ' I ' 'sulfates such as oleyl sulfate, the C10-C18 alkyl alkoxy sulfates (AES) and the C10-
C18 alkyl alkoxy ~albvx~, ' ~ The neutralizing cabon for the anionic synthetic
.
WO 95121233 2 1 8 2 6 7 2 PCTIUS95/01257
sulfonates and/or sulfates is leyleael~kd by ccllJ_.I~lulldl cations which are widely
used in detergent le~ lo~y such as sodium, potassium or " ,u1~7,,,,,,u,~ium.
Preferred herein are the alkyl sulphat~!, especially coconut alkyl sulphate having from
6 to 18 carbon atoms in the alkyl chai~, preferably from 8 to 15, or mixtures thereof.
The ~ u, ~ "s suitable to uâe in thle present invention may further comprise other
nonionic and/or anionic surfactants apart from the ones described herein above as
well as surfactants of other different classes such as cationic, ~ "i., or
1 lu~ 1 ic surfadants.
The c~~ s suitable to use in the present invention are aqueous liquid
deaning cu~"r ~ . Said aqueou.s c~7"., ~s have a pH as is of from 1 to 9,
preferably ~rom 3 to 6 an~ more prefe!rably from 3 to 4. The pH of the ~""~
can be adjusted by using organic or illorganic acids, or alkalinizincJ agents.
The cu,~ s suitable for use in the present invention may further comprise a
variety of optional ingredients sl~ch as builders, stabilizers, chelants. soil
suspenders, dye transfer a~ents, sol~ents, b,i~l,' ,er~, perfumes and dyes.
The C.O~Ilr~ "' IS suitable to be used according to tha present invention can beused as a household cleaner in th~ bathroom or in the kitchen, and can also be
used as a laundry detergent or as Q laundry detergent booster or as laundry pre-wash treatment , " ~. When used as hard surface deaners, such
`'~-r ' 15 are easy to rinse a~d provide 900d shine CllQI~ ,a on the
deaned surfaces. Also such C_ ~ r "' lS are also psrticularly effedlve as carpetcleaners. If used as carpet cleznen, such c~ll.r " ~s are ~dve"l~<,y_~usly
dispensed with spray dispenser and left to ad on said carpets.
Apart from providing the cur,.r ~ s described herein before the presentinvention is also based on the findirlg that, in aqueous cleaning cc", Ir ~~"' .15~ using
a 2-alkyl alkanol together with a hydrophobic surfada~t having an HLB below 14
will improve the greasy cleaning of !~aid ~c~
By "improve the greasy cleaning" it is to be understood herein that the greasy
cleaning achieved by using a 2-alkyl alkanol together with a hydrophobic surfadant
having an HLB below 14 in a givi~n ~ 0c ~ is improved as compared to the
greasy cleaning obtained with the same ,,c,~ comprising either only one of
. _ . , . . _ _ _ . . .
WO 95/21233 2 1 ~ 2 ~ 7 2 PCT~sgc~0l25~ ~
~o
ssid two additional compounds or none of them. Also it has been found that a
synergetic effect on grease cleaning pe~ru,,,,~,,c~ is associated with the use of a 2-
alkyl alkanol with IIJ~luph~ nonionic surfactants in aqueous cleanin3
cu~ uuaiIi0l~s. The grease cleanins pt~l~ullllall~ of a uo~F~ may be
evaluated by different grease test methods such as the GSS (grease SOâp scum
soil) test method used hereinafter in the examples.
An advanta3e associated with the present invention is that due to the use of a 2-
âlkyl alkanol a good suds profile is obtained. Indeed, the present invention allows
to avoid too much foaming which is likely to be a~ dl to shine, and makes
rinsino troublesome for the consumer. In other words, it is possible to have with the
present invenUon the dâsired suds profile without the need to add any other sudssuppressing ingredient, such as silicone-based suds suppressers v~hich are
d~ i" I~dl to the stability o~ hydrogen peroxide and the aestheUcs of the
The present invenUon will be further illustrated by the following exâmples.
A) E~"o, ' ' ' dats on the benefits h ~ ~ - ' J w~th the ! - , - ~/11_ - of the
present Invent~on
The following w..lr ' ~s were made by mixin~ the listed ingredients in the listed
~up~Iiù~ (weight % unless otherwise specified).
Cu,,,r .i~ ~s I ll lll IV V Vl
Dobanol R 91-1û -- -- 1.6 1.6 1.6 1.6
Alkylsulphate -- 1.5 -- 1.5 1.5 1.5
Dobanol R 23-3 -- --- 1.1 1.1 1.1 ---
H22 7.0 7.0 7.0 7.0 7.0 7.0
2-Butyl Octanol --- --- 0.4 0.4 -- 1.1
Water ând minors up to 100'~
H2SO4 up to pH 4
Dobanol R 91-10 is a nonionic surfactant having an HLB of 14.7, Dobanol R 23-3 is
a nonionic surfactant having an HLB of 8.1 and alkyl sulphate is coconut
alkylsulphate ~u"",)~:,ui_:'y available from Marchon under the trade name Empicol
0298F~.
~ WO951~1233 2 1 8 2 6 7 2 PCT/US95/01257
11
Composition I compnses only hydrogel1 peroxide and is taken as a reference for the
grease cleaning in hard surface appli~ ation and for the bleachable p~, rull"a"u_ in
laundry application. Composition ll l,omprises hydrogen peroxide and an alkyl
sulphate. Composition lll is ":~U,O,s~,"' 'iv~ ûf the w.,~ s of the prior art and
comprises as the sunfactants, a noniûnic system. Cc~ IV is l~:,ull:5el~ "~C
of the present invention, i.e. it comprises 2-butyl octanol together with a
l~jllu~Jllùbic nonionic surfactant, Dobanol R 23-3, hydrogen peroxide and an alkyl
sulphate (coconut alkylsulphate). Con1position V differs from wll.r " , IV in that
COIllr ~ V r~oes not compnse ~-butyl octanol. Compositiûn Vl differs from
COIll,uuaitk~l~ IV in that wlllr- ' ~ Vl does not comprise Dobanol R 23-3.
Actually, all these C.OIllr_ " Ia apart from - ..r "' ~ IV are taken as a reference
for d~",or,_'. " ,9 that the benefits a~sociated with a wlllr " , according to the
present invenUon are linked tû the diffl3rent il ,y, .,~;r,. ~ which act together.
The followina tests were canried out:
A GSS (greasy soap.scum soil) test rnethod was canied out with the wlllr - " !s
msnUoned herein above. This GSS ~est method was canried ûut usina a syntheUc
soil ,~",.,__.,' ' le of typical hard sulface household (bathroom) soil. The test-soil
(GSS soil) was prepared by mixing isopropyl alcohol, ralcium stearate powder, a
mixture of soils including inorganic and oraanic compounds r_,,~.__.," ,~ avera~e
house soils and a mixture of greaây soils namely natural greasy compounds. This
test-soil was applied on an enamel-~oated metal plate ~cleaned with a deteraent
and Uhen wUh alcohol) with a paint rûller, and the plates are baked at 130 C for 30
minutes. After 24 hours they can be used for the test. This test is evaluated in a
Gardner straight-line scnub machine.
c' ~r- ~1 was taken as a r;3ference and compared to r~T~ " ~S 1I to Vl to
evaluate Uheir greasl3 cleaning p_.ru""a""e. A c~lllr " ~ rated + is s;y" ' I:lybetter versus the reference Culllpûai~iull (1). A ~ ~-",~ rated ++ is siy" ~
betterthan a ~ o""~u '5~,~ rated + ancl a w~ û~i~iu~ rated +++ is siylliri~,al~ better
than a ~u,,,p~ rated ++. Betw3en ~ s rated with the same points
dirrt,t:,~ces are not statistically significant. These results are obtained on a eight
replicates test.
WO95/21233 2 ~ 8 2 6 72 PCT/US95/01257
A laundry test was perfommed on white wtton fabric stained with tea. The stain was
pretreated with 4 ml. of the cG",r Ia mentioned herein before and the fabncs
were waâhed at 25C.
A suds test was wnducted with a cylinder suds machine. 500 ml. of a solution
wntaining 12.5 gr. of a w~ herein before mentioned was spinned for 10
minutes. Such solutions have been prepared with each of the w,, Ir "' ~S
menUoned herein before. Water hardness was 18 grain/gallon. The number is an
index that takes into acwunt the suds (in cm) of the w, l~7a~ùl Idil l~ wl llr '~ ~ and
the speed at which it collapses. The suds is measured when the cylinders are
stopped, after 5 minutes and after 30 minutes. The maximum given to a
is number 10 and w~ u~ Ida to a wlllr - ' , for v~hich the cylinders
are full of suds at the three different measurement times.
Results were as follows: = .
C~.llr ,s I ll lll IV V Vl
Laundrv aPplicr~tion
I l~dlv~ll " stain (tea) Ref. = - = = =
Hard surfaces aDPlication
GSS test Ref. + +++ +++ ++ ++
Appearance clear clear hazy clear clear hazy
Suds 0 7 2 3 9 3
The above results clearly show the benefits of a wlllr ~ ac^wrding to the
present invention (I,UIl~ IV). Indeed, the results show that the wlllr ~s
of the present invention comprising as the surFactant system both a hydrophobic
surfactant having an HLB below 14 and an anionic surFactant are better in temms of
laundry rj~ru""e."~ while Ill-~illlaillill~ good grease cleaning p~:,ru""c",~ when
used as hard surface cleaners as compared to cr,",r " 1S without said anionic
surfactant (see WlI~ " I IV as wmpared to Wlllr "' ~ ac~ of the
pnor art). Said results further show that there is a beneficial wntribution of alkyl
~ WO 95/21233 2 ~ 8 2 6 72 PCT/US95/01257
sulFate on the aspect of the finished ~",.~,oail;on, i.e. the alkyl sulphate gives to the
Cu~ Oai~iOI~ crys~al clear aspect.
Said results also show the role of 2 butyl octanol not only as a booster of
hJIIupl-u~ic surfactants but also as ;~ suds suppressing agent (see, for example,
~u,.,, " 1S V or ll versus ~~ r~ "' n IV).
As for the synergebc effect assoaate~i with the use of 2 butyl odanol together with
a ~,JIIu,ullo~ic nonionic surfactant, ~DOBANOL 23.3!D) in cleaning detergent in
terms of greasy cleaning ~elru,,,,..,,~,~, although obtained with cu,,r ", IV ascompared to Wlllr~ "' ~5 V or Vl, this is further délllull-lldted in the following
eAy~, i" ,_. ,lal data.
B) E~"_.' ' ' datD on the ~ ' behveen h.J,. . ' '. nonlon~c
.' ' ' ond 2~1kYI alk~nol on ~Iresse cleunln~7
The following w.l.r " ~s were made by mixing the listed ingredients in the listed
~JIUpOl liul~a (weight % unless otherwise specified).
Culll~uai~ ns 1 11 111
Lutensol RAO 30 0.75 0.75 0.75
Dobanol R 91-10 2.60 2.60 2.60
Dobanol R 23-6.5 o.go 0,90 0.90
Dobanol R 23-3 1.00 1.75
H22 7.00 7.00 7.0û
H2SO4 up to pH 4.00 4.00 4.00
2-Butyl Octanol 0.75 -- 1.75
Water and minors up to 10û3.
Lutensol R AO 30 is a nonionic surfa,tant having an HLB of 17, Dobanol R 91-10 is
a nonionic surfactant having an Hl.B of 14.7, Dobanol R 23-6.5 is a nonionic
surfactant having a HLB of 11.9, a,nd Dobanol R 23-3 is a nonionic surfactant
having an HLB of 8.1.
WO 95121233 2 1 8 2 6 7 2 PCT/US9~10~ ~
14
Composition I is l~,Ul~a~l.' "/e of the present invention, i.e. it compnses 2-butyl
octanol together with a I l~ u,ul-obic surfactant having an HLB below 14, Dobanol R
23-3. Composition ll differs from W~ I in that COI~ 1I does not
comprise 2-butyl octanol. Composition lll differs from wll~ I in that
wll~r ' , lll does not wmprise Dobanol R 23-3. Cu",r " ~s ll and lll are
taken as reference.
A GSS (greasy soap scum soil? test method was carried out with the wlllr- ' ~s
mentioned herein above.
This GSS test method was camed out using a synthebc soil ,t:,u.. ,' ';~c of
typical hard surface household (bathroûm) soil. The test-soil (GSS soil) was
prepared by mixing isopropyl alwhol, calaum stearate powder, a mixture of soils
induding inor~anic and or~ianic wmpounds and ,~ .," ,9 average house soils
and a mixture of greasy soils namely natural ~r_asy compounds. This test-soil was
applied on an enamel-coated metal plate (deaned with a detergent and then with
alwhol) with a paint roller, and the plates are baked at 13û C for 3û minutes. After
24 hours they can be used for the test. This test is evaluated in a Gardner straight-
line scrub machine.
The results are given in number of strokes a given wll.r ", needs to dean a
standard soiled (GSS soil) plate. The lower the number of strokes nseded the more
~fficient in terms of deaning is the ~~ - r "' I used to dean the dirt from the test
plates.
Results were as follows: the indicated figures represent the number of strokes, as
defined ht, ~,i"~LO ~e.
CGIllr "' 5 No of strokes
Composition 1 79.5
Composition ll 100.0 f
Composition lil 104.5
The above results deariy show that there is a synergetic effect associated with the
use of a 2-alkyl alkanol (2-butyl odanol) together with a IIJJlu,ulluLic nonionic
~ WO 95/21233 2 1 8 2 6 7 2 PCTIUS9~101257
surfactant having an HLB below 14 l Dobanol R 23-3) in cleaning detergent in
tenns of greasy cleaning pert~,l"~"ue.
Exam~les
~.
Following culllr ' ~s wl3re made t~y mixing the listed i~ die~,b in the listed
~,u,uu,liu,,s (weight % unless otherwis~3 specified).
Cù~ )5 1 ll lll IV
H22 7.û ~'.û 7.û 7.0
Alkylsulphate (1) 1.2 --- 1.2
Dobanol R 91-8 -- --- 1.6 --
Dobanol R 91-1û 1.6 11.6 -- 1.6
Lial alkylsulphats (2) -- '1.5 -- 1.5
Dobanol R 23-3 1.1 'I.1 -- 1.1
Lutensol R TO 3
2-Butyl Octanol û.5 1).5 0.6 0.2
Water and minors (dye) up to 1û09
H2SO4 up to pH 4
(1) is a coconut a~kylsulphate cc ."",_,. 'l~ available from Marchon under the trade
name Empicol û298F~!D and (2) is a branched alkylsulphate ~ _~IIJ available
from Marchon under the trade nam~3 ~~mpicol 8221~. Dobanol R 23-3 is a nonionic
surfadant having an HLa of 8.1 ar~d Lutensol R TO 3 is a nonionic surfactant
having an HLB of 8.
The .,ulllr . " 1,~5 in the examples are according to the present invention, i.e. they
exhibit good ~reasy cleaning on vanous soils such as kitcllen dirt soils, bathtub soils
as well as excellent laundry pe~rù~ w. Furthemmore, the stability of hydrogen
peroxide was monitored and proved " ' ' ~ at 50c for two weeks. Also, the
COIll~uuai~iulls in the examples are clyâtal clear ~",, " ,~ in a broad range oftemperature, e.g. up to 50C, said cu,,,r " .~s further provide âatisfactory shine
pe,tu"lla"~ and surfacs safety when used aâ hard surtace cleaners. Also, these
cû,,,~uoai~iuns are able to perfomm in a vanety of conditions, i.e. in hard and soft
water.
