HIGH SOLVENT CONTENT EMULSIONS

• US 20130079419A1
• Filed: 05/06/2011
• Published: 03/28/2013
• Est. Priority Date: 05/07/2010
• Status: Abandoned Application

• Current Assignee: Conopco (Unilever PLC)
• Original Assignee: Conopco (Unilever PLC)
• Inventors: Zhang, Qiqing, Khoshdel, Ezat, Zhou, Weizheng, Moaddel, Teanoosh, Yuan, Su, Dobkowski, Brian John
• Application Number:
  US13/695,439
• Publication Number:
  US 20130079419A1
• Time in Patent Office: Days
• US Class Current: 514/770
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/594 Mixtures of polymers
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61K 8/25 Silicon; Compounds thereof
• CPC Class Codes: A61K 8/365 Hydroxycarboxylic acids; Ketocarboxylic acids
• CPC Class Codes: A61K 8/585 Organosilicon compounds
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/898 containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin

Abstract

A high solvent content emulsion having solvent, functionalized polymer and particles having an isoelectric point below the pH of the emulsion is described. The emulsion yields excellent sensory and deliverability benefits and is suitable for use as a carrier for consumer-based end use compositions.

Claims

1. An emulsion comprising:

(a) particles having an isoelectric point below a pH of the emulsion;

(b) a functionalized polymer suitable to hydrogen and/or ionically bond to the particles; and

(c) a solvent.

2. An emulsion according to claim 1 wherein the particles comprise hydrogen and/or ionic bonding capabilities with the functionalized polymer.

3. An emulsion according to claim 1 or claim 2 wherein the particles comprise at least 0.1% by weight silica.

4. An emulsion according to any one of the preceding claim wherein the particles comprise pyrogenically produced silica, pyrogenically produced silican comprising at least one group selected from

5. An emulsion according to any one of the preceding claims wherein the particles have a diameter of less than 3 microns.

6. An emulsion according to any one of the preceding claims wherein the functionalized polymer has anionic, zwitterionic and/or cationic character.

7. An emulsion according to any one of the preceding claims wherein the functionalized polymer comprises primary, secondary and/or quaternary amine groups.

8. An emulsion according to claim 6 wherein the functionalized polymer is selected from the group consisting of polysiloxane, polyalkylane and polyester each one of which is functionalized with sulfoxarium, phosphorium, carboxylate sulfonate and/or sulfate groups.

9. An emulsion according to claim 6 wherein the functionalized polymer comprises groups with N⁺ and COO⁻

.

10. An emulsion according to any one of the preceding claims wherein the functionalized polymer comprises polymer of the formulae:

11. An emulsion according to any one of claims 1 to 8 wherein the functionalized polymer is amodimethicone.

12. An emulsion according to any one of the preceding claims wherein the emulsion further comprises at least one oil and/or fatty acid.

13. The emulsion according to claim 12 wherein the oil is pentasiloxane, dimethicone and/or mineral oil, and the fatty acid is octanoic acid.

14. An emulsion according to claim 12 or claim 13 wherein the oil makes up from 3 to 85% by weight of the mixture of oil and functionalized polymer.

15. An emulsion according to any one of the preceding claims wherein the emulsion comprises at least 20% by weight solvent and the solvent is water.

16. An emulsion according to any one of the preceding claims wherein the emulsion further comprises carbon black.

17. An end use composition comprising the emulsion of claim 1.

18. A composition according to claim 16 wherein the end use composition is topically applied.

19. A composition according to claim 17 or claim 18 wherein the composition further comprises niacinamide, a quaternary ammonium compound or both.

20. A method for treating a skin condition comprising the step of topically applying the end use composition of any one of claims 16 to 18 to skin.