Shampoo compositions

• US 20010000467A1
• Filed: 11/30/2000
• Published: 04/26/2001
• Est. Priority Date: 03/05/1998
• Status: Active Grant

• Current Assignee: Helene Curtis Inc. (Unilever PLC)
• Original Assignee: Helene Curtis Inc. (Unilever PLC)
• Inventors: Murray, Andrew Malcolm
• Granted Patent: US 6,436,383 B2
• Time in Patent Office: Days
• US Class Current: 424/70.1
• CPC Class Codes: A61K 2800/5426 cationic
• CPC Class Codes: A61K 2800/594 Mixtures of polymers
• CPC Class Codes: A61K 2800/654 The particulate/core comprising macromolecular material
• CPC Class Codes: A61K 8/0241 Containing particulates characterized by their shape and/or structure see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes
• CPC Class Codes: A61K 8/731 Cellulose; Quaternized cellulose derivatives
• CPC Class Codes: A61K 8/737 Galactomannans, e.g. guar; Derivatives thereof
• CPC Class Codes: A61K 8/8147 Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
• CPC Class Codes: A61K 8/892 modified by a hydroxy group, e.g. dimethiconol
• CPC Class Codes: A61K 8/898 containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

The conditioning performance of small particle size emulsified silicone in a surfactant-based shampoo composition can be significantly boosted by the inclusion in the shampoo composition of an amino functionalized silicone. Accordingly, the invention provides an aqueous shampoo composition comprising, in addition to water:

i) at least one surfactant chosen from anionic, nonionic, zwitterionic or amphoteric surfactants or mixtures thereof;

ii) an amino functionalized silicone; and

iii) emulsified particles of an insoluble, non-amino functionalized silicone, in which the average silicone particle size of the emulsified non-amino functional silicone in the shampoo composition is less than 2 microns.

Claims

1. An aqueous shampoo composition comprising, in addition to water:

i) at least one surfactant chosen from anionic, nonionic, zwitterionic or amphoteric surfactants or mixtures thereof;

ii) an amino functionalised silicone; and

iii) emulsified particles of an insoluble, non-amino functionalised silicone, in which the emulsified non-amino functional silicone has an average silicone particle size in the shampoo composition of less than 2 microns.

2. A shampoo composition according to

claim 1

, in which the emulsified non-amino functional silicone has an average silicone particle size in the shampoo composition of from 0.01 to 1 micron.

3. A shampoo composition according to

claim 1

or

claim 2

, in which the weight ratio of amino functionalised silicone (ii) to non-amino functionalised silicone (iii) is 1:

2 or less.

4. A shampoo composition according to any preceding claim, in which the amino functional silicone has a mole % amine functionality in the range of from about 0.1 to about 8.0 mole %, preferably from about 0.1 to about 5.0 mole %, most preferably from about 0.1 to about 2.0 mole %.

5. A shampoo composition according to any preceding claim, in which the amino functional silicone is in the form of an emulsion of amino functional silicone oil with non ionic and/or cationic surfactant, and in which the average particle size of the amino functional silicone in the shampoo composition is less than 2 microns.

6. A shampoo composition according to any preceding claim, in which the emulsified non-amino functional silicone has a viscosity (of the silicone itself) of at least 500,000 cst.

7. A shampoo composition according to any preceding claim, in which the total amount of silicone is from 0.3 to 5%, preferably 0.5 to 3%, by weight of the total shampoo composition.

8. A shampoo composition according to any preceding claim, further comprising from 0.001 to 5% by weight of the total shampoo composition of a cationic deposition polymer selected from cationic cellulose and cationic guar derivatives.