WO2011071964A4

WO2011071964A4 - A porous, dissolvable solid substrate and a surface resident coating of cationic surfactant conditioner

Info

Publication number: WO2011071964A4
Application number: PCT/US2010/059359
Authority: WO
Inventors: Robert Wayne Glenn, Jr.
Original assignee: The Procter & Gamble Company
Priority date: 2009-12-08
Filing date: 2010-12-08
Publication date: 2011-08-11
Also published as: WO2011071964A1; JP2013512963A; MX2012006247A; EP2509560A1; CN102647973B; IN2012DN05091A; BR112012013836A2; US20110189247A1; EP2509560B1; CN102647973A; US8349341B2

Abstract

The present invention relates to hair care compositions, especially those hair care compositions in the form of a hair care article that is a porous dissolvable solid substrate. The porous dissolvable solid substrate has a surface resident coating comprising the cationic surfactant conditioner active that can provide a conditioning benefit.

Claims

46 AMENDED CLAIMS received by the International Bureau on 24 June 201 1 (24.06.201 1 )

1. A hair care article comprising:

a. ) a porous dissolvable solid substrate comprising:

i. from about 10% to about 75% surfactant;

ii. from about 10% to about 50% water-soluble polymer;

iii. from about 1 % to about 30% plasticizer; and

b. ) a surface resident coating comprising from about 10% to about 100% of one or more cationic surfactant conditioner actives;

wherein the ratio of the porous dissolvable solid substrate to the surface resident coating is from about 110: 1 to about 0.5:1, and

wherein the surfactant is selected from the group consisting of

- from about 0 to about 10% anionic surfactant,

- non-ionic surfactant,

- polymeric surfactant, and

- combinations thereof.

2. The hair care article of Claim 1 , wherein the ratio of the porous dissolvable solid substrate to the surface resident coating is from about 20: 1 to about 1 :1, preferably wherein the ratio is from about 10:1 to about 1.5: 1, further preferably wherein the ratio is from about 7: 1 to about 3: 1.

3. The hair care article of Claim 1, wherein the surface resident coating comprising the cationic surfactant conditioner active is a powder.

4. The hair care article of Claim 1 , wherein the isolated cationic conditioner active is selected from alkyl quaternary ammonium salts, alkyl amine salts, and mixtures thereof.

5. The hair care article of Claim 1, wherein the isolated cationic conditioner active is an alkyl quaternary ammonium salt having the Formula I:

X

47

wherein R¹, R², R³, and R⁴ are each independently selected from the group consisting of an aliphatic group of from 1 to 22 carbon atoms, or an aromatic, alkoxy, polyoxyalkylene, alkylamido, hydroxy alkyl, aryl or alkylaryl group having up to 22 carbon atoms; and wherein X is a salt-forming anion selected from the group consisting of halogen, acetate, citrate, lactate, glycolate, phosphate, nitrate, sulphate, alkylsulphate radicals, and combinations thereof and wherein R¹ and R² are each independently selected from the group consisting of C_½ to C22 hydrocarbyl chains comprising at least one ester linkage in both R¹ and R², and R¹ and R² are each independently selected from C_½ to C22 saturated or unsaturated chains, and wherein R³ and R⁴ are each independently selected from CH₃ and CH₂CH₂OH.

6. The hair care article of Claim 1 , wherein the isolated cationic conditioner active is an alkyl amine salt corresponding to alkyl amines having the Formula II:

R¹— C(O)— N(H)— R²— N(R³)(R⁴)

wherein R¹ is a fatty acid chain containing from 12 to 22 carbon atoms, R² is an alkylene group containing from one to four carbon atoms, and R³ and R⁴ are, independently, an alkyl group having from one to four carbon atoms, and wherein wherein the alkyl amine salt is the salt corresponding to alkyl amines having the Formula II neutralized with acids selected from the group consisting of hydrochloric acid, sulphuric acid, nitric acid, phosphoric acid, lactic acid, citric acid, tartaric acid, acetic acid, gluconic acid, glycolic acid and propionic acid, and combinations thereof.

7. The hair care article of Claim 1 , wherein the surface resident coating comprising the cationic surfactant conditioner active is in the form of a layer, a coating, and combinations thereof.

8. The hair care article of Claim 1 , wherein the surface resident coating comprising the cationic surfactant conditioner active is attached to at least a portion of the outer surface of the porous dissolvable solid substrate.

9. The hair care article of Claim 1 , wherein the dissolvable hair care article comprises two porous dissolvable solid substrates, and wherein the surface resident coating comprising the cationic surfactant conditioner active is a layer situated between the two porous dissolvable solid substrates.

10. The hair care article of Claim 1 , the porous dissolvable solid substrate having a basis weight of from about 125 grams/m² to about 3,000 grams/m² and a thickness of from about 0.5 mm to about 10 mm.

11. The hair care article of Claim 1 , wherein the porous dissolvable solid substrate comprises a

2 2

specific surface area from about 0.03 m /gram to about 0.25 m /gram.

12. The hair care article of Claim 1 , wherein the porous dissolvable solid substrate comprises a Percent open cell content from about 80% to about 100.0%.

13. The hair care article of Claim 1 , wherein the porous dissolvable solid substrate comprises a cell wall thickness of from about 0.02 mm to about 0.15 mm.

14. The hair care article of Claim 1 , wherein the hair care article comprises one or more water- soluble polymers selected from the group consisting of polyvinyl alcohols, polyacrylates, copolymers of acrylic acid and methacrylic acid, polyvinylpyrrolidones, polyalkylene oxides, starch and starch derivatives, pullulan, gelatin, hydroxypropylmethylcelluloses, methylcelluloses, and carboxymethycelluloses.

15. The hair care article of Claim 1 , wherein the hair care article comprises a plasticizer selected from the group consisting of polyols, copolyols, polycarboxylic acids, polyesters, and dimethicone copolyols.