Shampoo compositions comprising and emulsified silicone an a microemulsified silicone

• US 6,706,258 B1
• Filed: 04/19/1999
• Issued: 03/16/2004
• Est. Priority Date: 04/20/1998
• Status: Expired due to Term

• Current Assignee: Unilever Home & Personal Care USA (Unilever PLC)
• Original Assignee: Unilever Home & Personal Care USA (Unilever PLC)
• Inventors: Gallagher, Peter, Kreu-Nopakun, Tipawan, Murray, Andrew Malcolm
• Primary Examiner(s): Page, Thurman K.
• Assistant Examiner(s): CHANNAVAJJALA, LAKSHMI SARADA
• Application Number:
  US09/294,173
• Time in Patent Office: 1,793 Days
• Field of Search: 424/70.1, 424/70.4, 424/70.11, 424/70.12, 424/70.21, 424/70.22, 424/401, 424/404, 514/852, 514/63, 514/880, 514/881, 510/122, 510/123
• US Class Current: 424/70.1
• CPC Class Codes: A61K 2800/5426 cationic
• CPC Class Codes: A61K 8/068 Microemulsions
• CPC Class Codes: A61K 8/442 substituted by amido group(s)
• CPC Class Codes: A61K 8/463 containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
• CPC Class Codes: A61K 8/737 Galactomannans, e.g. guar; Derivatives thereof
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/892 modified by a hydroxy group, e.g. dimethiconol
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair

Abstract

An aqueous shampoo composition comprising, in addition to water:

i) at least one cleansing surfactant;

ii) a cationic deposition polymer, and

iii) a silicone component consisting of a blend of:

(a) emulsified particles of an insoluble silicone, in which the emulsified particles of insoluble silicone are incorporated into the shampoo composition as a preformed aqueous emulsion having an average silicone particle size in the emulsion and in the shampoo composition of from 0.15 to 30 microns, and

(b) microemulsified particles of an insoluble silicone, in which the microemulsified particles of insoluble silicone are incorporated into the shampoo composition as a preformed aqueous microemulsion having an average-silicone particle size in the microemulsion and in the shampoo composition of less than 0.10 microns.

Claims

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

i) at least one cleansing surfactant;

ii) a cationic deposition polymer, and

iii) a silicone component consisting of a blend of;

(a) emulsified particles of an insoluble silicone, in which the emulsified particles of insoluble silicone are incorporated into the shampoo composition as a preformed aqueous emulsion having an average silicone particle size in the emulsion and in the shampoo composition of from 0.15 to 30 microns, and

(b) microemulsified particles of an insoluble silicone, in which the microemulsified particles of insoluble silicone are incorporated into the shampoo composition as a preformed aqueous microemulsion having an average silicone particle size in the microemulsion and in the shampoo composition of less than 0.10 microns.

2. A composition according to claim 1, in which the average silicone particle size of the emulsified silicone in the shampoo composition ranges from 0.15 to 2 microns.

3. A composition according to claim 1, in which the average silicone particle size of the microemulsified silicone in the shampoo composition ranges from 0.01 to 0.075 micron.

4. A composition according to claim 1, in which the weight ratio of emulsified particles of silicone to microemulsified particles of silicone ranges from 4:

1 to 1;

4.

5. A composition according to claim 1, in which the total amount of silicone is from 0.3 to 5%, by weight based on the total weight of the shampoo composition.

6. A composition according to claim 1, in which the cleansing surfactant is selected from anionic, amphoteric and zwitterionic surfactants, and mixtures thereof.

7. A composition according to claim 1, in which the total amount of surfactant is from 10% to 25% by weight based on the total weight of the shampoo composition.

8. A composition according to claim 1, further comprising a solid active agent selected from solid antimicrobials, preferably the heavy metal salts of pyridinethione.

9. A composition according to claim 8, in which the level of antimicrobial agent is from 0.05 to 0.8%, by weight based on the total weight of the shampoo composition.

10. A composition according to claim 1, in which the cationic deposition polymer is selected from cationic cellulose and cationic guar derivatives.

11. A composition according to claim 1, wherein the weight ratio of emulsified particles of silicone to micro-emulsified particles of silicone ranges from 3:

1 to 1;

3.

12. A composition according to claim 1, wherein the weight ratio of emulsified particles of silicone to micro-emulsified particles of silicone ranges from 2:

1 to 1;

1.

13. A composition according to claim 1, wherein the total amount of silicone is from 0.5 to 3% by weight based on the total weight of the shampoo composition.

14. A composition according to claim 8, wherein the solid active agent is zinc pyridinethione.

15. A composition according to claim 9, wherein the level of antimicrobial agent is from 0.1 to 0.5% by weight based on the total weight of the shampoo composition.

16. A composition according to claim 9, wherein the level of antimicrobial agent is about 0.3% by weight based on the total weight of the shampoo composition.

17. An aqueous shampoo composition consisting of, in addition to water:

i) at least one cleansing surfactant;

ii) a cationic deposition polymer; and

iii) a silicone component consisting of a blend of;

(a) emulsified particles of an insoluble silicone, in which the emulsified particles of insoluble silicone are incorporated into the shampoo composition as a preformed aqueous emulsion having an average silicone particle size in the emulsion and in the shampoo composition of from 0.15 to 30 microns, and

(b) microemulsified particles of an insoluble silicone, in which the microemulsified particles of insoluble silicone are incorporated into the shampoo composition as a preformed aqueous microemulsion having an average silicone particle size in the microemulsion and in the shampoo composition of less than 0.10 microns.