Composition comprising polymers having a star structure, the polymers, and their use

• US 6,737,071 B2
• Filed: 05/07/2002
• Issued: 05/18/2004
• Est. Priority Date: 04/06/1999
• Status: Expired due to Fees

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: Mougin, Nathalie
• Primary Examiner(s): YU, GINA C
• Assistant Examiner(s): YU, GINA C
• Application Number:
  US10/139,530
• Publication Number:
  US 20020168332A1
• Time in Patent Office: 742 Days
• Field of Search: 424/401, 525/94, 525/299, 526/72, 526/73, 526/303.1
• US Class Current: 424/401
• CPC Class Codes: A61K 2800/54 Polymers characterized by specific structures/properties
• CPC Class Codes: A61K 8/90 Block copolymers A61K8/89 takes precedence
• CPC Class Codes: A61Q 1/02 Preparations containing skin colorants, e.g. pigments preparations in powder form A61Q1/12
• CPC Class Codes: A61Q 1/06 Lipsticks
• CPC Class Codes: C08F 293/00 Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule on to polymers modified by introduction of unsaturated end groups C08F290/02
• CPC Class Codes: C08F 293/005 using free radical "living" or "controlled" polymerisation, e.g. using a complexing agent

Abstract

A composition, in particular a cosmetic composition, comprising, in an appropriate medium, at least one polymer with a highly specific ordered structure is disclosed. These compositions find a specific application in the field of make-up and are capable of being applied to the skin, semi-mucous membranes and/or mucous membranes. In particular, these compositions can be provided in the form of a transfer-free make-up composition.

Claims

1. A composition, comprising, in a physiologically acceptable medium, at least one polymer having a star structure chosen from structures of formula (I):

2. A composition according to claim 1, wherein said at least one polymerized monomeric unit Mi chosen from polymerized monomeric units Mk is present in an amount greater than or equal to 40 percent by weight relative to the total weight of the polymerized monomeric units Mi.

3. A composition according to claim 1, wherein said at least one polymerized monomeric unit Mi chosen from polymerized monomeric units Mj is present in an amount less than or equal to 60 percent by weight relative to the total weight of the polymerized monomeric units Mi.

4. A composition according to claim 1, wherein said physiologically acceptable medium is chosen from pharmaceutically acceptable mediums and cosmetically acceptable mediums and further wherein said composition is chosen from forms of pharmaceutical compositions and cosmetic compositions.

5. A composition according to claim 1, further comprising at least one agent which is able to form a film.

6. A composition according to claim 5, wherein said at least one agent is chosen from plasticizing agents and coalescence agents.

7. A composition according to claim 1, wherein said at least one polymer is present in an amount ranging from 1 to 50 percent by weight, on a dry basis, with respect to the total weight of said composition.

8. A composition according to claim 7, wherein the range is from 1 to 40 percent by weight.

9. A composition according to claim 7, wherein the range is from 5 to 35 percent by weight.

10. A composition according to claim 1, wherein said at least one polymer is present in said physiologically acceptable medium containing at least one phase chosen from aqueous phases, organic phases, aqueous/organic phases, and fatty phases.

11. A composition according to claim 10, wherein said at least one phase is chosen from alcoholic and aqueous/alcoholic phases.

12. A composition according to claim 10, wherein said at least one polymer is dissolved or dispersed in said at least one phase.

13. A composition according to claim 1, wherein said composition has a form chosen from oil-in-water emulsions;

water-in-oil emulsions;

dispersions in a solvent medium;

solutions in a solvent medium;

thickened fluids;

gelled fluids;

semi-solids;

paste forms; and

solid forms.

14. A composition according to claim 13, wherein said solid forms are chosen from sticks and tubes.

15. A composition according to claim 1, wherein said make-up product is transfer-free.

21. A process for preparing the composition according to claim 1, comprising introducing, in a physiologically acceptable medium, said at least one polymer according to claim 1.

22. A process according to claim 21, wherein said at least one polymerized monomeric unit Mi chosen from polymerized monomeric units Mk is present in an amount greater than or equal to 40 percent by weight relative to the total weight of the polymerized monomeric units Mi.

23. A process according to claim 22, wherein said at least one polymerized monomeric units Mi chosen from polymerized monomeric units Mj is present in an amount less than or equal to 60 percent by weight relative to the total weight of the polymerized monomeric units Mi.

16. A process for treating a keratinous substance, comprising applying to said keratinous substance a composition, comprising, in a physiologically acceptable medium, at least one polymer having a star structure chosen from structures of formula (I):

17. A process according to claim 16, wherein said at least one polymerized monomeric unit Mi chosen from polymerized monomeric units Mk is present in an amount greater than or equal to 40 percent by weight relative to the total weight of the polymerized monomeric units Mi.

18. A process according to claim 16, wherein said at least one polymerized monomeric units Mi chosen from polymerized monomeric units Mj is present in an amount less than or equal to 60 percent by weight relative to the total weight of the polymerized monomeric units Mi.

19. A process according to claim 16, wherein said keratinous substance is chosen from skin, hair, scalp, eyelashes, eyebrows, nails, and lips.

20. A process according to claim 19, wherein said keratinous substance is chosen from human keratinous substances.