Personal care compositions containing cationically modified starch and an anionic surfactant system

• US 20060002880A1
• Filed: 06/29/2005
• Published: 01/05/2006
• Est. Priority Date: 07/02/2004
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Gizaw, Yonas, Staudigel, James Anthony, Peffly, Marjorie Mossman, Pliego, Salvador
• Granted Patent: US 8,623,341 B2
• Time in Patent Office: Days
• US Class Current: 424/70.130
• CPC Class Codes: A61K 2800/5426 cationic
• CPC Class Codes: A61K 2800/5428 amphoteric or zwitterionic
• CPC Class Codes: A61K 8/42 Amides
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61K 8/442 substituted by amido group(s)
• CPC Class Codes: A61K 8/45 Derivatives containing from 2 to 10 oxyalkylene groups
• CPC Class Codes: A61K 8/463 containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
• CPC Class Codes: A61K 8/466 containing sulfonic acid derivatives; Salts
• CPC Class Codes: A61K 8/732 Starch; Amylose; Amylopectin; Derivatives thereof
• 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 19/00 Preparations for care of the skin
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations
• CPC Class Codes: A61Q 5/00 Preparations for care of the hair
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

Personal care compositions comprise (a) from about 0.01 wt. % to about 10 wt. % of a water-soluble cationically modified starch polymer, wherein said water-soluble cationically modified starch polymer has a molecular weight from about 1,000 to about 200,000 and a charge density from about 0.7 meq/g to about 7 meq/g; (b) from about 5 wt. % to about 50 wt. % of an anionic surfactant system, said anionic surfactant system comprising at least one anionic surfactant and having an ethoxylate level and an anion level, (i) wherein said ethoxylate level is from about 1 to about 6, and (ii) wherein said anion level is from about 1 to about 6; and (c) a cosmetically acceptable medium. Personal care compositions as described above further comprise from about 0.01 wt. % to about 10 wt. % of one or more oily conditioning agents. Methods of treating hair or skin comprise applying the personal care compositions as described above to the hair or skin and rinsing the hair or skin.

Claims

1. A personal care composition comprising:

a) from about 0.01 wt. % to about 10 wt. % of a water-soluble cationically modified starch polymer, wherein said water-soluble cationically modified starch polymer has a molecular weight from about 1,000 to about 200,000 and a charge density from about 0.7 meq/g to about 7 meq/g;

b) from about 5 wt. % to about 50 wt. % of an anionic surfactant system, said anionic surfactant system comprising at least one anionic surfactant and having an ethoxylate level and an anion level,

i) wherein said ethoxylate level is from about 1 to about 6, and

ii) wherein said anion level is from about 1 to about 6; and

c) a cosmetically acceptable medium.

2. A personal care composition according to claim 1, wherein said water-soluble cationically modified starch polymer comprises maltodextrin and has a Dextrose Equivalent of less than about 35.

3. A personal care composition according to claim 1, wherein said water-soluble cationically modified starch polymer has a degree of substitution of a cationic group from about 0.2 to about 2.5.

4. A personal care composition according to claim 1, wherein said water-soluble cationically modified starch polymer has a molecular weight from about 5,000 to about 100,000.

5. A personal care composition according to claim 1, wherein said anionic surfactant comprises an anion selected from the group consisting of sulfates, sulfonates, sulfosuccinates, isethionates, carboxylates, phosphates, and phosphonates.

6. A personal care composition according to claim 1, further comprising one or more surfactants selected from the group consisting of amphoteric surfactants, zwitterionic surfactants, cationic surfactants, and nonionic surfactants.

7. A personal care composition according to claim 1, further comprising from about 0.05 wt. % to about 5 wt. % of a cellulose or guar cationic deposition polymer having a molecular weight greater than about 200,000 and a charge density from about 0.15 meq/g to about 4.0 meq/g.

8. A personal care composition according to claim 7, wherein said cellulose or guar cationic deposition polymer has a charge density from about ¼

to about ½

of the charge density of said cationically modified starch polymer.

9. A personal care composition according to claim 1, further comprising from about 0.025 wt. % to about 5 wt. % of a synthetic cationic deposition polymer having a molecular weight from about 1,000 to about 5,000,000 and a charge density from about 2 meq/g to about 10 meq/g.

10. A personal care composition according to claim 1, further comprising one or more additional components selected from the group consisting of dispersed water-insoluble particles, opacifying agents, suspending agents, anti-dandruff agents, non-volatile paraffinic hydrocarbons, and propellants.

19. A method of treating hair or skin, said method comprising the steps of:

a) applying a personal care composition according to claim 1 to said hair or skin; and

b) rinsing said hair or skin with water.

20. A method of treating hair or skin according to claim 19, wherein said personal care composition is in a form selected from the group consisting of shampoos, body washes, gels, lotions, creams, mousses, sprays, films, and powders.

11. A personal care composition comprising:

a) from about 0.01 wt. % to about 10 wt. % of a water-soluble cationically modified starch polymer, wherein said water-soluble cationically modified starch polymer has a molecular weight from about 1,000 to about 200,000 and a charge density from about 0.7 meq/g to about 7 meq/g;

b) from about 5 wt. % to about 50 wt. % of an anionic surfactant system, said anionic surfactant system comprising at least one anionic surfactant and having an ethoxylate level and an anion level,

i) wherein said ethoxylate level is from about 1 to about 6, and

ii) wherein said anion level is from about 1 to about 6;

c) from about 0.01 wt. % to about 10 wt. % of one or more oily conditioning agents; and

d) a cosmetically acceptable medium.

12. A personal care composition according to claim 11, wherein the ratio of said oily conditioning agent to said water-soluble cationically modified starch polymer is at least about 2:

1.

13. A personal care composition according to claim 11, wherein said oily conditioning agent is selected from the group consisting of non-volatile silicone oils, hydrocarbon oils, polyolefins, fatty esters, fluorinated conditioning compounds, and mixtures thereof.

14. A personal care composition according to claim 13, wherein said non-volatile silicone oil has a particle size as measured in said personal care composition from about 1 μ

m to about 50 μ

m.

15. A personal care composition according to claim 13, wherein said non-volatile silicone oil has a particle size as measured in said personal care composition from about 100 nm to about 1 μ

m.

16. A personal care composition according to claim 13, wherein said non-volatile silicone oil has a particle size as measured in said personal care composition of less than about 100 nm.

17. A personal care composition according to claim 13, wherein said non-volatile silicone oil is selected from the group consisting of organo-modified silicones and fluoro-modified silicones.

18. A personal care composition according to claim 17, wherein said organo-modified silicone comprises an organo group selected from the group consisting of alkyl groups, alkenyl groups, hydroxyl groups, amine groups, quaternary groups, carboxyl groups, fatty acid groups, ether groups, ester groups, mercapto groups, sulfate groups, sulfonate groups, phosphate groups, propylene oxide groups, and ethylene oxide groups.