Controlled released powder entrapment compositions for hydrophobic ingredient
AssigneeAvon Products, Inc.
InventorsAnthony D. Gonzalez, Glen T. Anderson, John A. Duffy
Life of this patent
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Abstract
There are provided controlled release compositions and methods of making thereof. The compositions have an effective amount of at least one hydrophobic active ingredient and a silicone fluid entrapped in a hybrid silicone powder matrix. The present compositions preferably are dry powders.
Claims49
A topical composition comprising:
- a hybrid silicone powder matrix;
- and
- an effective amount of a hydrophobic active ingredient and a volatile silicone entrapped within said hybrid silicone powder matrix.
An insect repellent composition comprising:
- a hybrid silicone powder matrix having a hybrid silicone crosspolymer powder selected from the group of dimethicone, cyclomethicone, vinyl dimethicone, organomodified variations thereof, and any combinations thereof;
- and
- an effective amount of an insect repellent entrapped in said hybrid silicone powder matrix, wherein said insect repellent is one or more actives selected from the group consisting of oil of citronella, N,N diethyl-m-toluamide, ethyl butylacetylaminopropionate, hydroxy-ethyl isobutyl piperidine carboxylate, dimethyl phthalate, 2-ethyl-1,3 hexanediol, neem oil, soybean oil, lemon grass oil, geranium/geraniol oil, p-methane-3,8-diol, and any combinations thereof.
A method for the production of a topical composition comprising:
- mixing a hybrid silicone powder with at least one liquid hydrophobic ingredient for a period of time and at a temperature sufficient to form a gel or slurry;
- and
- adding volatile silicone fluid to said gel or slurry;
- and thereafter
- mixing said gel or slurry for a period of time and at a temperature sufficient to form a hybrid silicone powder matrix, wherein said hydrophobic ingredient and said silicone fluid are entrapped within said powder matrix.
A hybrid silicone powder matrix comprising a hybrid silicone powder and a volatile silicone.
A topical cosmetic composition comprising an effective amount of a hydrophobic active ingredient, an entrapment agent for the active ingredient, and a cosmetically acceptable vehicle, wherein the entrapment agent comprises a matrix of silicone rubber powder particles and silicone resin powder, and wherein the composition is in powder form upon topical application.
Dependencies are inferred from the claim text.