Composition comprising salt of acyl glutamate as primary surfactant or primary anionic surfactant and specific structurant polymers

Patent metadata

Field	Value
Publication number	US-10328005-B2
Application number	US-201515526855-A
Country	US
Kind code	B2
Filing date	Nov 12, 2015
Priority date	Nov 18, 2014
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

The present invention relates to compositions comprising salt of acyl glutamate as primary surfactant or primary anionic surfactant and specific structurant polymers.

First claim

The invention claimed is:

1. Cleansing composition comprising:
a) 0.5 to 35% by wt. total composition of a surfactant system comprising anionic surfactant comprising salt of acyl glutamate, wherein salt of acyl glutamate is present at 50% or more of all surfactant present,
and wherein the surfactant system further comprises 0 to 20% by wt. total composition of a co-surfactant, wherein co-surfactant are surfactants which are not anionic, selected from the group consisting of nonionic, cationic, amphoteric surfactants and mixtures thereof;

b) 0% to 30% by wt. total composition water-soluble or oil-soluble skin or hair benefit agent not being a surfactant;
c) 0.1 to 10% of a structuring polymer which is a polymerization product of:
i) 0 to 10% by wt. of total monomer of a first ethylenically unsaturated monomer selected from the group consisting of:
A) diacids of formula HOOC—CR 1 ═CR 2 —COOH (I);
B) a cyclic anhydride precursor of diacid (I), having the formula:

C) and combination thereof, where
R 1 and R 2 are individually selected from H, C 1 -C 3 alkyl, phenyl, chlorine and bromine;

ii) 15 to 60% by wt. total monomer of a second ethylenically unsaturated monomer selected from the group consisting of acrylic acid, methacrylic acid and mixtures thereof;
iii) 30 to 75% by wt. of total monomer of a (meth)acrylate monomer which is selected from the group consisting of C 1 to C 8 esters of acrylic acid, C 1 to C 8 esters of methacrylic acid and mixtures thereof; and
iv) 1 to 25% by wt. of total monomer of an associative monomer having the formula:
R 4 —CH═C(R 3 )—C(O)—O—(R 5 O) a —R 6

wherein:
R 3 and R 4 are independently selected from H and C 1-3 alkyl,
each R 5 O is independently an oxyalkylene unit having from 2 to 4carbon atoms,
R 6 is selected from:
linear and branched alkyl having from 8 to 40 carbon atoms, and
alkaryl, the alkyl group of which has from 8 to 40 carbon atoms, such alkyl group being linear or branched; and

a has a value of from 6 to 40; and
d) water
and wherein
salt of glutamate comprises a mixture of C 10 and C coco glutamate, wherein the mixture of C 10 and C coco has a C 8 -C 10 chain length distribution wherein C 8 -C 10 is present in an amount of more than 13%, or
salt of glutamate comprises a mixture of C 10 and C 12 glutamate, wherein the ratio of C 10 to C 12 is at least 1/5,
wherein pH of composition is 5.5 or below.

2. A composition according to claim 1 , wherein the composition is clear isotropic, wherein clear isotropic is defined by absorbance value of 1.0 or below when measured at wavelength of 550 nm, adding 300 μl into a 96-well plate without dilution.

3. A composition according to claim 1 , wherein salt of glutamate comprises a mixture of C 10 and C coco glutamate wherein the mixture of C 10 and C coco has a C 8 -C 10 chain length distribution wherein C 8 -C 10 is present in an amount of more than 13%.

4. A composition according to claim 1 , further comprising 0.1% to 10% by wt. benefit agent not being a surfactant.

5. A composition according to claim 1 wherein pH of composition is 4.0 to 6.0.

6. A composition according to claim 1 , wherein pH is 4 to 5.5.

7. A composition according to claim 1 , wherein co-surfactant is cocoamidopropylbetaine and which comprises 0.1 to 2% C 10 -C 14 fatty acid.

8. Composition according to claim 1 , wherein co-surfactant is CAPB and level of MgCl 2 is 0.8% to 3.0%.

9. A composition according to claim 1 , which has initial bulk viscosity at shear rate of 1.0 s −1 of greater than 1,000 cps.

10. A composition according to claim 1 , which remains clear and whose bulk viscosity at shear rate of 1.0 s −1 , measured by a stress-controlled rheometer, remains significantly stable (±30%) from when measured before and after two weeks at storage temperatures of 4° C., 25° C. and 50° C.; and which composition has no visible phase separation after storage of two weeks at temperatures of 4° C., 25° C. and 50° C.

11. A composition according to claim 1 , subparagraph (iv), wherein the alkaryl group is alkylphenyl.

Assignees

• Conopco Inc

Inventors

• Carnali Joseph Oreste
• Liu Hongjie
• Shah Pravin

Classifications

• A61K2800/262

  Transparent; Translucent · CPC title

• A61Q5/02

  Preparations for cleaning the hair · CPC title

• C11D1/10

  Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates thereof · CPC title

• A61K8/44 Primary

  Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof · CPC title

• A61K2800/48

  Thickener, Thickening system · CPC title