IP Library › Granted Patent US 11,369,550
Granted Patent B2
US 11,369,550 · App. 16/697,695 · Granted Jun 28, 2022

Tinted mineral sunscreen compositions

Inventors: Jaimie Mecca (Clifton, NJ); Jennifer Lynn Paulucci (Manalapan, NJ); Patricia Brieva (Manalapan, NJ); Anil Shah (Hamilton, NJ); Brian Bodnar (Manasquan, NJ); Rabia Ahmad (Clark, NJ)
Assignee: L'OREAL
A61K8/064A61K8/19A61K8/416A61K8/8141A61Q17/04A61K2800/43A61K2800/48A61K2800/612
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Quick Facts
Patent No.
US 11,369,550
App. No.
16/697,695
Granted
Jun 28, 2022
Kind
B2
Abstract

A tinted mineral sunscreen composition is provided in the form of a water-in-oil emulsion comprising a cationic surfactant; one or more oil thickening agent; one or more mineral pigments; one or more mineral UV filtering agents; and water wherein the ratio between the cationic surfactant and the total amount of oil thickening agents is from about 0.05 to about 3.

Claims (38)

1. A composition in the form of a water-in-oil emulsion comprising:

a. from about 0.1 to about 3 wt. % of a cationic surfactant;

b. from about 0.5 to about 4 wt. % of one or more oil thickening agents;

c. from about 0.5 to about 4 wt. % of one or more mineral pigments;

d. one or more mineral UV filtering agents;

e. a water phase of about 28 to about 50 wt. % of water;

f. one or more emulsifiers; and

wherein the ratio between the cationic surfactant and the total amount of oil thickening agents is from about 0.05 to about 3; and

wherein the weight percentages are based on the total weight of the composition.

2. The composition of claim 1 , wherein the cationic surfactant is a quaternary ammonium compound.

3. The composition of claim 2 , wherein the quaternary ammonium compound contains one or two alkyl chains which independently have from about 14 to about 24 carbon atoms; and the quaternary ammonium compound has a cosmetically acceptable counterion selected from chloride, bromide, and methosulfate.

4. The composition of claim 3 comprising cetrimonium chloride, cetrimonium methosulfate, stearimonium chloride, behentrimonium chloride, behentrimonium methosulfate, behenamidopropyltrimonium methosulfate, stearamidopropyltrimonium chloride, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, dipalmitoylethyl hydroxyethylmonium methosulfate, dicetyldimonium chloride, and a mixture thereof.

5. The composition of claim 1 , wherein the one or more oil thickening agents comprises polyalcohol acrylates.

6. The composition of claim 5 , wherein the polyalcohol acrylate is a poly C10-30 alkyl acrylate.

7. The composition of claim 1 , wherein the total amount of oil thickening agents is present from about 0.8 to about 3 wt. % based on the total weight of the composition.

8. The composition of claim 1 , wherein the one or more mineral pigments comprises a silicone treatment.

9. The composition of claim 1 , wherein the one or more mineral pigments comprises non-silicone treated pigments.

10. The composition of claim 1 , wherein the one or mineral pigment is surface-treated with a trialkoxyalkylsilane.

11. The composition of claim 1 , wherein the one or mineral pigments comprises modified amino acid-treated pigments.

12. The composition of claim 11 , wherein the modified amino acid-treated pigments comprise N-acyl-glutamine-treated pigments.

13. The composition of claim 1 , comprises more than one mineral pigment, each of which has a different color.

14. The composition of claim 1 , wherein the one or more mineral pigment comprises a metal oxide.

15. The composition of claim 14 , wherein the metal oxide comprises an iron oxide.

16. The composition of claim 15 , wherein iron oxide comprises yellow iron oxide, black iron oxide, red iron oxide or a mixture thereof.

17. The composition of claim 1 , wherein the one or more mineral UV filtering agents are selected from titanium dioxide, zinc oxide, iron oxides, cerium oxides, zirconium oxides, and a mixture thereof.

18. The composition of claim 17 , wherein the one or more mineral UV filtering agents is present from about 1 to about 25 wt. % based on the total weight of the composition.

19. The composition of claim 1 , wherein the ratio between the cationic surfactant and the total amount of oil thickening agents is from about 0.1 to about 2.8.

20. A composition in the form of a water-in-oil emulsion comprising:

a. from about 0.1 to about 3 wt. % of a cationic surfactant;

b. from about 0.5 to about 4 wt. % of one or more oil thickening agent;

c. from about 0.5 to about 4 wt. % of one or more non-silicone treated pigments;

d. one or more mineral UV filtering agents;

e. one or more fillers;

f. a water phase of about 28 to about 50 wt. % of water;

g. one or more emulsifiers; and

wherein the ratio between the cationic surfactant and the total amount of oil thickening agents is from about 0.05 to about 3; and

wherein the weight percentages are based on the total weight of the composition.

21. A method for protecting skin from UV radiation comprising applying an effective amount of the composition of claim 1 to the skin.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 23, 2022
From: MECCA, JAIMIE; PAULUCCI, JENNIFER LYNN; BRIEVA, PATRICIA; SHAH, ANIL; BODNAR, BRIAN; AHMAD, RABIA
To: L'OREAL
Reel/Frame 059980/0786 →
Continuity (1)
Related Publication 20210154106A1 · May 27, 2021