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1. WO2020109264 - COSMETIC COMPOSITION COMPRISING SPECIFIC HYPERBRANCHED COPOLYMERS AND ANIONIC EMULSIFIERS

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

Claims

1. A cosmetic skin care composition comprising

a hyperbranched copolymer of the monomers

(i) dodecenyl succinic acid anhydride

(ii) diisopropanol amine

(iii) bis-dimethylaminopropyl amine

having terminal groups of formula


and having a molecular weight Mn of between 1200 and 4000 g/mol; and at least one anionic emulsifier.

2. The cosmetic composition according to claim 1 characterized in that the hyperbranched copolymer is prepared by the consecutive steps

a1 ) polymerizing the monomers (i) and monomers (ii) and monomers (iii) to yield a polyesteramide having terminal dimethylamino groups of the

- N /

formula \

a2) quaternization of the dimethyl amino groups of the polyesteramide of step a1 ) by 2-chloroacetate, particularly by sodium 2-chloroacetate.

3. The cosmetic composition according to anyone of the preceding claims characterized in that the molar ratio of the monomers (i) to monomers (ii) is between 5 : 1 and 0.5 : 1 , particularly between 4 : 1 and 1 : 1 , preferably between 3 : 1 and 3 : 2.

4. The cosmetic composition according to anyone of the preceding claims characterized in that the molar ratio of the monomers (i) to monomers (iii) is between 5 : 1 and 0.5 : 1 , particularly between 3 : 1 and 1 : 1 , preferably between 2.5 : 1 and 1.1 : 1.

5. The cosmetic composition according to anyone of the preceding claims characterized in that the hyperbranched copolymer has a number average molecular weight Mn of between 1400 and 3000 g/mol, preferably between 2100 and 2300 g/mol.

6. The cosmetic composition according to anyone of the preceding claims characterized in that the anionic emulsifier is selected from the group consisting of potassium cetyl phosphate, disodium cetearyl sulfosuccinate, sodium stearoyl glutamate, sodium stearoyl lactylate, glyceryl stearate citrate, and sodium cocoyl isethionate.

7. The cosmetic composition according to anyone of the preceding claims

wherein the total amount of the anionic emulsifier is selected in the range of 0.1 to 6 % by weight, preferable in the range of 0.25 to 5 % by weight, most preferably in the range of 0.5 to 4 % by weight.

8. The cosmetic composition according to anyone of the preceding claims,

characterized in that the cosmetic composition is a skin care composition, preferably a sun care composition.

9. The cosmetic composition according to anyone of the preceding claims

characterized in that the composition is a sulfate-free cosmetic composition.

10. The cosmetic composition according to anyone of the preceding claims

characterized in that the composition is free of cationic emulsifier.

11. Use of a hyperbranched copolymer of the monomers

(i) dodecenyl succinic acid anhydride

(ii) diisopropanol amine

(iii) bis-dimethylaminopropyl amine

having terminal groups of formula

and having a molecular weight Mn of between 1200 and 4000 g/mol in a cosmetic skin care composition comprising at least one anionic emulsifier for reducing the material transfer to a contacted surface.

12. The use according to claim 11 characterized in that the contacted surface is a glass surface.

13. The use according to claim 11 or 12, characterized in that the contacted surface is a display of a mobile phone, computer device or tablet.