Solid lipstick composition having improved hardness

Patent metadata

Field	Value
Publication number	US-9789055-B2
Application number	US-201414307815-A
Country	US
Kind code	B2
Filing date	Jun 18, 2014
Priority date	Jun 18, 2014
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

Disclosed is a solid lipstick composition comprising at least one polypropyl silsesquioxane film forming resin, at least one silicone acrylate copolymer, at least one volatile hydrocarbon solvent, and at least one wax, wherein the ratio of the silicone acrylate copolymer to the polypropyl silsesquioxane resin is from about 1:1 to about 1:4, said composition preferably having a hardness of at least 40 gf for an 8.1 mm diameter stick.

First claim

What is claimed is:

1. A solid lipstick composition comprising:
(a) from about 1% to about 25% by weight of at least one acrylates/dimethicone copolymer;
(b) from about 5% to about 35% by weight of at least one polypropylsilsesquioxane film forming resin;
(c) from 10% to about 20% by weight of at least one synthetic wax;
(d) at least one volatile hydrocarbon solvent selected from the group consisting of isododecane, isooctane, dodecane, isohexadecane, and mixtures thereof, and
(e) at least one phenylated silicone oil;

wherein the polypropylsilsesquioxane film forming resin has the general formula RnSiO(4−n)/2; wherein R is independently chosen from a hydrogen atom and a monovalent hydrocarbon group comprising 3 carbon atoms, wherein more than 80 mole % of R are propyl groups; n is a value from 1.0 to 1.4; more than 60 mole % of the resin comprises RSiO3/2 units; said film forming resin having a hydroxyl or alkoxy content from 0.2 to 10% by weight of the resin, and mixtures thereof; and wherein the ratio of the acrylates/dimethicone copolymer (a) to the at least one polypropylsilsesquioxane film forming resin (b) is from about 1:1 to about 1:4; the composition having a hardness of at least 40 gf; the weights being relative to the weight of the composition.

2. The composition of claim 1 wherein the sum of the weight percent of the at least one acrylates/dimethicone copolymer (a) and the at least one polypropylsilsesquioxane film forming resin (b) is less than or equal to 20%.

3. The composition of claim 2 wherein the acrylates/dimethicone copolymer is present in a product selected from the group consisting of cyclopentasiloxane (and) acrylates/dimethicone copolymer, butyl acetate (and) acrylates/dimethicone copolymer, methyl trimethicone (and) acrylates/dimethicone copolymer) and isododecane (and) acrylate/dimethicone copolymer, and mixtures thereof.

4. The composition of claim 3 wherein the polypropylsilsesquioxane film forming resin has the general formula RnSiO(4−n)/2; wherein R is independently chosen from a hydrogen atom and a monovalent hydrocarbon group comprising 3 carbon atoms, wherein more than 80 mole % of R are propyl groups; n is a value from 1.0 to 1.4; more than 60 mole % of the resin comprises RSiO3/2 units; said film forming resin having a hydroxyl or alkoxy content from 0.2 to 10% by weight of the resin, and mixtures thereof.

5. The composition of claim 1 wherein the wax is selected from the group consisting of polyethylene wax, stearoxydimethicone, behenoxy dimethicone, stearyl dimethicone, cetearyl dimethicone, and mixtures thereof.

6. The composition of claim 5 comprising greater than 40% volatile hydrocarbon solvents.

7. The composition of claim 6 wherein a volatile hydrocarbon solvent is isododecane.

8. The composition of claim 7 further comprising at least one colorant.

9. The composition of claim 8 wherein the ratio of the acrylates/dimethicone copolymer (a) to the at least one polypropylsilsesquioxane film forming resin (b) is from about 1:1 to about 1:2.5.

10. The composition of claim 9 having a hardness of from about 40 gf to about 100 gf.

11. A solid lipstick composition comprising:
(a) from about 1% to about 25% by weight of acrylate/dimethicone copolymer;
(b) from about 5% to about 35% by weight of polypropylsilsesquioxane film forming resin;
(c) from 10% to about 20% by weight of synthetic polyethylene wax;
(d) isododecane;
(e) at least one colorant, and
(f) at least one phenylated silicone oil;
wherein the polypropylsilsesquioxane film forming resin has the general formula RnSiO(4−n)/2; wherein R is independently chosen from a hydrogen atom and a monovalent hydrocarbon group comprising 3 carbon atoms, wherein more than 80 mole % of R are propyl groups; n is a value from 1.0 to 1.4; more than 60 mole % of the resin comprises RSiO3/2 units; said film forming resin having a hydroxyl or alkoxy content from 0.2 to 10% by weight of the resin, and mixtures thereof; and wherein the ratio of the acrylate/dimethicone copolymer (a) to the polypropylsilsesquioxane film forming resin (b) is from about 1:1 to about 1:2.5; the sum of the weight percent of the at least one silicone acrylate copolymer (a) and the at least one polypropylsilsesquioxane film forming resin (b) is less than or equal to 20%; the composition having a hardness of from about 40 gf to about 70 gf; the weights being relative to the weight of the composition.

12. A method of making up lips comprising applying to the lips a solid lipstick composition in an amount effective to make up the lips comprising:
(a) from about 1% to about 25% by weight of at least one acrylates/dimethicone copolymer;
(b) from about 5% to about 35% by weight of at least one polypropylsilsesquioxane film forming resin;
(c) from 10% to about 20% by weight of at least one synthetic wax;
(d) at least one volatile hydrocarbon solvent selected from the group consisting of isododecane, isooctane, dodecane, isohexadecane, and mixtures thereof;
(e) at least one colorant, and (f) at least one phenylated silicone oil;
wherein the polypropylsilsesquioxane film forming resin has the general formula RnSiO(4−n)/2; wherein R is independently chosen from a hydrogen atom and a monovalent hydrocarbon group comprising 3 carbon atoms, wherein more than 80 mole % of R are propyl groups; n is a value from 1.0 to 1.4; more than 60 mole % of the resin comprises RSiO3/2 units; said film forming resin having a hydroxyl or alkoxy content from 0.2 to 10% by weight of the resin, and mixtures thereof; and wherein the ratio of the acrylates/dimethicone copolymer (a) to the at least one polypropylsilsesquioxane film forming resin (b) is from about 1:1 to about 1:4; the composition having a hardness of at least 40 gf; the weights being relative to the weight of the composition.

13. The composition of claim 1 wherein the composition is free of silicone wax.

14. The composition of claim 11 wherein the composition is free of silicone wax.

15. The method of claim 12 wherein the composition is free of silicone wax.

16. The method of claim 12 wherein the composition has a hardness of from about 40 gf to about 100 gf.

17. The composition of claim 10 wherein the composition is free of silicone wax.

18. The method of claim 16 wherein the composition is free of silicone wax.

Assignees

• Oreal

Inventors

• Bui Hy Si
• El-Khouri Rita Jaky

Classifications

• A61Q1/06

  Lipsticks · CPC title

• A61K8/31

  Hydrocarbons · CPC title

• A61K8/891 Primary

  saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone · CPC title

• A61K8/92 Primary

  Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof · CPC title

• A61K8/585

  Organosilicon compounds · CPC title