A composition comprising a UV shielding agent, a semicrystalline polymer containing at least one alkyl acrylate chain, and scleroglucan gum.

Abstract

The present invention relates to a composition, preferably in the form of an oil-in-water emulsion, particularly a cosmetic or dermatological composition, comprising: - at least one UV shielding agent; - at least one semicrystalline polymer containing at least one alkyl acrylate chain; and - at least one scleroglucan gum. The present invention makes it possible to obtain a composition that has strong UV protection, is stable over time, and exhibits good cosmetic properties such as a cooling sensation and a non-greasy, non-sticky feel.

Claims

1. Compositions, particularly cosmetic or dermatological compositions: - At least one type of UV shielding agent; - Copolymers obtained by copolymerizing at least one semicrystalline polymer containing at least one alkyl acrylate chain, preferably a monomer selected from alkyl acrylates and alkyl methacrylates, with a hydrophilic monomer, preferably hydroxyethyl (meth)acrylate, and mixtures thereof; and - At least one type of scleroglucan gum; A composition containing the following:

2. The composition according to claim 1, which is in the form of an emulsion, preferably an oil-in-water emulsion.

3. The composition according to claim 1 or 2, wherein the UV shielding agent is selected from organic UV shielding agents, such as water-soluble organic UV shielding agents, oil-soluble organic UV shielding agents, insoluble organic UV shielding agents, inorganic UV shielding agents, and mixtures thereof, and the UV shielding agent is preferably selected from organic UV shielding agents.

4. The composition according to any one of claims 1 to 3, wherein the organic UV shielding agent is selected from oil-soluble organic UV shielding agents, preferably from dibenzoylmethane compounds, salicylic acid compounds, β,β-diphenyl acrylate compounds, benzophenone compounds, phenylbenzotriazole compounds, triazine compounds and mixtures thereof, and more preferably from homosalate, ethylhexyl salicylate, drometrizole trisiloxane, bisethylhexyloxyphenol methoxyphenyl triazine, octocrylene, butyl methoxydibenzoylmethane, ethylhexyl triazone, 2-(4-diethylamino-2-hydroxybenzoyl)benzoate n-hexyl, diethylhexyl butamide triazone and mixtures thereof.

5. A composition according to any one of claims 1 to 4, comprising bisethylhexyloxyphenol methoxyphenyl triazine.

6. The semicrystalline polymer comprising at least one alkyl acrylate chain is a lipophilic polymer comprising monomer units of formulas (A) and (B): 【Chemistry 1】 (In the formula, R １ These are independently selected from alkyl groups or alkenyl groups; R １ At least 60% by mass of the groups are selected from stearyl groups and behenyl groups, and this mass percentage is all of the R groups present in the polymer. １ It is for the sum of the bases; The sum of all hydroxyethyl acrylate units versus the above R １ The total mass ratio of all acrylate units containing the group is in the range of 1:30 to 1:1; The sum of units A and B is at least 95% by mass of the total mass of the polymer. Selected from, The composition according to any one of claims 1 to 5, wherein the number-average molecular weight Mn of the polymer is in the range of 2000 to 9000 g / mol.

7. In the aforementioned lipophilic acrylic polymer, R1 is an alkyl group, preferably C １６ ~C ２２ The composition according to claim 6, comprising an alkyl group, more preferably a behenyl group or a stearyl group.

8. The composition according to claim 6 or 7, wherein in the lipophilic acrylic polymer, at least 70% by mass, preferably at least 80% by mass, and more preferably at least 90% by mass of the R1 group is a behenyl group or a stearyl group.

9. The composition according to any one of claims 6 to 8, wherein in the lipophilic acrylic polymer, all of the R1 groups are stearyl groups or behenyl groups.

10. The composition according to any one of claims 6 to 9, wherein the lipophilic acrylic polymer has a mass ratio of the total of all hydroxyethyl acrylate units to the total of all acrylate units having the R1 group in the range of 1:15 to 1:1, and preferably in the range of 1:10 to 1:

4.

11. The composition according to any one of claims 6 to 10, wherein the number-average molecular weight Mn of the semicrystalline polymer is in the range of 5,000 to 9,000 g / mol.

12. The composition according to any one of claims 6 to 11, wherein the melting point of the semicrystalline polymer is in the range of 40°C to 70°C, and preferably in the range of 45°C to 67°C.

13. The composition according to any one of claims 6 to 12, wherein in the lipophilic acrylic polymer, at least 60% by mass of the R1 group is a stearyl group, and the melting point of the polymer is in the range of 40 to 60°C, preferably in the range of 45 to 55°C.

14. The composition according to any one of claims 6 to 12, wherein in the lipophilic acrylic polymer, at least 60% by mass of the R1 group is a behenyl group, and the melting point of the polymer is in the range of 60°C to 70°C, preferably in the range of 63°C to 67°C.

15. A composition according to any one of claims 1 to 14, comprising at least one emulsifier.

16. Comprising at least one or a plurality of alkyl polyglycoside type nonionic emulsifiers, the nonionic emulsifier preferably has the following general formula: R １ O-(R ２ O) ｔ -(G) ｖ (wherein: - R １ This represents a linear or branched alkyl or alkenyl group containing 6 to 24 carbon atoms, particularly 8 to 18 carbon atoms, or an alkylphenyl group in which a linear or branched alkyl group contains 6 to 24 carbon atoms, particularly 8 to 18 carbon atoms; - R ２ This represents an alkylene group containing 2 to 4 carbon atoms; - G represents a sugar unit containing 5 to 6 carbon atoms; - t represents a value in the range of 0 to 10, preferably in the range of 0 to 4; The composition according to any one of claims 1 to 15, wherein v is selected from compounds having a value in the range of 1 to 15, preferably in the range of 1 to 4.

17. - At least one type of C ２ ~C ２４ C of polyols １２ ~C ２４ Fatty acid esters, preferably at least one glycerol C １６ ~C １８ fatty acid esters; and - At least one C ８ ~C ３０ Preferably C ８ ~C ２４ At least one carboxylic acid-type or carboxylate-type anionic surfactant selected from amino acids and salts thereof modified with hydrocarbon chains; A composition according to any one of claims 1 to 16, comprising:

18. C ２ ~C ２４ The C of the polyol １２ ~C ２４ The composition according to claim 17, wherein the fatty acid ester is selected from fatty acid esters of glycerol; these are preferably selected from glyceryl laurate, glyceryl oleate, glyceryl stearate, glyceryl palmitate and mixtures thereof.

19. The carboxylic acid type or carboxylate salt type anionic surfactant has the following structure: [Chemical formula 2] 【Chemistry 2】 (Z is a linear or branched C) ８ ~C ２２ Represents an alkyl group or alkenyl group; X is a hydrogen atom or a methyl group; n is either 0 or 1; Y is a hydrogen atom, -(CH ２ ) ２ C(O)OH group or -(CH ２ ) ２ C(O)O － M ＋ It is the basis; The composition according to claim 17 or 18, wherein M is selected from compounds having a hydrogen atom or a cation (for example, sodium, potassium, ammonium, or triethanolamine).

20. At least one type of C １２ ~C ２４ The composition according to any one of claims 1 to 19, comprising a saturated fatty alcohol, wherein the saturated fatty alcohol is preferably selected from cetyl alcohol, stearyl alcohol, cetearyl alcohol, myristyl alcohol, lauryl alcohol, tridecyl alcohol, pentadecyl alcohol, hexadecyl alcohol, arachidyl alcohol, and behenyl alcohol, and preferably from behenyl alcohol, cetyl alcohol, stearyl alcohol, and cetearyl alcohol.

21. The composition according to any one of claims 1 to 20, comprising at least one wax, particularly at least one jojoba ester wax, wherein the wax is present in an amount of 0.1% to 2% by mass, preferably 0.2% to 0.8% by mass, based on the total mass of the composition.

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