HAIR CARE COMPOSITION

• US 20160279048A1
• Filed: 10/01/2014
• Published: 09/29/2016
• Est. Priority Date: 10/18/2013
• Status: Abandoned Application

• Current Assignee: Conopco, Inc. (Unilever PLC)
• Original Assignee: Conopco, Inc. (Unilever PLC)
• Inventors: PI, Yingying, LI, Zhengrong, JAYASWAL, Amit
• Application Number:
  US15/027,529
• Publication Number:
  US 20160279048A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61K 8/062 Oil-in-water emulsions
• CPC Class Codes: A61K 8/585 Organosilicon compounds
• CPC Class Codes: A61K 8/737 Galactomannans, e.g. guar; Derivatives thereof
• CPC Class Codes: A61Q 5/006 Antidandruff preparations
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

A hair care composition is disclosed comprising cationic deposition polymer and discrete dispersed droplets of a water-insoluble conditioning agent, wherein the cationic deposition polymer comprises at least 90% by weight cationically-modified guar by weight of the cationic deposition polymer and wherein the cationically-modified guar comprises first cationically-modified guar polymer having a charge density of greater than 1.2 meq/g and a molecular weight of at least 1 million g/mol, and second cationically-modified guar polymer having a charge density of from 0.8 to 1.2 meq/g and a molecular weight of at least 1 million g/mol.

Claims

1. A hair care composition comprising:

a) cationic deposition polymer; and

b) discrete dispersed droplets of a water-insoluble conditioning agent;

wherein the cationic deposition polymer comprises at least 90% by weight cationically-modified guar by weight of the cationic deposition polymer and wherein the cationically-modified guar comprises;

(i) first cationically-modified guar polymer having a charge density of greater than 1.2 meq/g and a molecular weight of at least 1 million g/mol; and

(ii) second cationically-modified guar polymer having a charge density of from 0.8 to 1.2 meq/g and a molecular weight of at least 1 million g/mol.

2. The hair care composition as claimed in claim 1 wherein the charge density of the second cationically-modified guar polymer is from 0.9 to 1.1 meq/g.

3. The hair care composition as claimed in claim 1 where in the molecular weight of the second cationically-modified guar polymer is from 1.5 to 3 million g/mol.

4. The hair care composition as claimed in claim 1 wherein the charge density of the first cationically-modified guar polymer is from 1.3 to 1.8 meq/g.

5. The hair care composition as claimed in claim 1 wherein the molecular weight of the first cationically-modified guar polymer is from 1.1 to 3 million g/mol.

6. The hair care composition as claimed in claim 1 wherein the composition comprises the first cationically-modified guar polymer and the second cationically modified guar polymer in a weight ratio (first:

second) of from 1;

10 to 10;

1.

7. The hair care composition as claimed in claim 1 wherein the composition comprises the first and second cationically-modified guar polymers in a total amount from 0.02 to 1% by weight of the composition.

8. The hair care composition as claimed in claim 1 wherein the droplets of conditioning agent have a mean diameter (D3,2) of less than 5 microns.

9. The hair care composition as claimed in claim 1 wherein the conditioning agent comprises silicone oil, preferably dimethicone, dimethiconol or a mixture thereof.

10. The hair care composition as claimed in claim 1 wherein the composition comprises surface active block polymer, preferably poloxamer.

11. The hair care composition as claimed in claim 10 wherein the block polymer is blended with silicone oil, preferably dimethicone.

12. The hair care composition as claimed in claim 1 wherein the composition comprises the water-insoluble conditioning agent in an amount of from 0.1 to 10% by weight of the composition.

13. The hair care composition as claimed in claim 1 wherein the composition comprises particulate anti-dandruff agent, preferably particulate metal pyrithione salt.

14. The hair care composition as claimed in claim 13 wherein the composition comprises particulate anti-dandruff agent in an amount of from 0.05 to 5% by weight of the composition.

15. The hair care composition as claimed in claim 1 wherein the composition comprises anionic cleansing surfactant, preferably in an amount ranging from 5 to 20% by weight of the hair care composition.

16. A process for manufacturing the hair care composition as claimed in claim 1 wherein the process comprises the steps of:

i) selecting the first cationically-modified guar polymer having a charge density of greater than 1.2 meq/g and a molecular weight of at least 1 million g/mol;

ii) selecting the second cationically-modified guar polymer having a charge density of from 0.8 to 1.2 meq/g and a molecular weight of at least 1 million g/mol;

iii) combining the first and second cationically-modified guar polymers with discrete droplets of a water-insoluble conditioning agent.