Conditioning shampoo composition

• US 20060057097A1
• Filed: 04/23/2003
• Published: 03/16/2006
• Est. Priority Date: 05/10/2002
• Status: Abandoned Application

• Current Assignee: Unilever Home & Personal Care USA (Unilever PLC)
• Original Assignee: Unilever Home & Personal Care USA (Unilever PLC)
• Inventors: Derici, Leo, Shaw, Neil Scott, Jenkins, Paul David, Tan-Walker, Ruby Loo Bick
• Application Number:
  US10/514,217
• Publication Number:
  US 20060057097A1
• Time in Patent Office: Days
• US Class Current: 424/70.122
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 8/062 Oil-in-water emulsions
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/894 modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61K 8/898 containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
• CPC Class Codes: A61K 8/90 Block copolymers A61K8/89 takes precedence
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

Aqueous hair cleansing and conditioning compositions are disclosed comprising comprising; a) from 1% to 50% by weight of a cleansing surfactant, b) discrete, dispersed droplets comprising a water-insoluble silicone conditioning oil characterised in that the mean diameter of the droplets (D3,2) is from 2 to 100 micrometres and c) a surface active block copolymer with a mean molecular weight of 4000 unified atomic mass units or more comprising polyethyleneoxide blocks and polypropyleneoxide blocks, wherein each block consists of 2 or more ethylene oxide or propylene oxide monomer units and wherein the mean number propylene monomer units in the block copolymer is 25 or more.

Claims

1. A rinse-off aqueous hair conditioning composition comprising;

a) from 1% to 50% by weight of a cleansing surfactant,

b) discrete, dispersed droplets comprising a water-insoluble silicone conditioning oil characterised in that the mean diameter of the droplets (D_3,2) is from 2 to 100 micrometres and

c) a surface active block copolymer with a mean molecular weight of 4000 unified atomic mass units or more comprising polyethyleneoxide blocks and polypropyleneoxide blocks, wherein each block consists of 2 or more ethylene oxide or propylene oxide monomer units and wherein the mean number propylene oxide monomer units in the block copolymer is 25 or more.

2. A composition according to claim 1 wherein the surface active block polymer is according to formula I:

3. A composition according to claim 1 wherein the surface active block copolymer is according to formula II:

4. A composition according to claim 1 comprising from 0.01% to 0.4% by weight of surface active block copolymer.

5. A composition according to claim 1 wherein the silicone conditioning oil has a viscosity from 5000 to 1000000 mm² sec⁻

1 at 25°

C.

6. A composition according to claim 1 wherein the silicone oil comprises a functionalised silicone.

7. A composition according to claim 6 wherein the functionalised silicone is a silicone copolyol with an HLB of 10 or less.

8. A composition according to claim 6, wherein the functionalised silicone is an amino-functionalised silicone.

9. A composition according to claim 8 wherein the amino-functionalised silicone has a weight percent amino functionality from 0.03 to 8, preferably from 0.5 to 4 percent.

10. A composition according to claim 1 wherein the composition comprises less than 0.01% by weight of a cationic deposition polymer.

11. A composition according to claim 1 wherein the cleansing surfactant is selected from the group consisting of anionic, amphoteric, zwitterionic and nonionic surfactants and mixtures thereof.

12. A method for preparing an aqueous hair conditioning composition, the composition comprising:

a) from 1% to 50% by weight of a cleansing surfactant,

b) discrete, dispersed droplets comprising a water-insoluble silicone conditioning oil characterised in that the mean diameter of the droplets (D_3,2) is from 2 to 100 micrometres, and wherein the method comprises;

i) preparing a solution comprising water and the surface active block copolymer,

ii) adding a silicone conditioning oil to the solution,

iii) forming the solution and the silicone conditioning oil into an oil-in-water emulsion by high-shear mixing,

iv) dispersing the oil-in-water emulsion comprising the block copolymer into a hair conditioning composition.

13. A method for preparing a hair conditioning composition the composition comprising:

a) from 1% to 50% by weight of a cleansing surfactant,

b) discrete, dispersed droplets comprising a water-insoluble silicone conditioning oil characterised in that the mean diameter of the droplets (D_3,2) is from 2 to 100 micrometres, and wherein the method comprises;

i) preparing an oil-in-water emulsion of a silicone conditioning oil,

ii) dispersing the surface active block copolymer into the emulsion,

iii) dispersing the oil-in-water emulsion comprising the block copolymer into a hair conditioning composition.

14. (canceled)

15. A method of cleaning and conditioning hair by applying a conditioning composition followed by rinsing, the composition comprising:

a) from 1% to 50% by weight of a cleansing surfactant,

b) discrete, dispersed droplets comprising a water-insoluble silicone conditioning oil characterised in that the mean diameter of the droplets (D_3,2) is from 2 to 100 micrometres.

16. (canceled)