Patent ID: 8877217
Filing Date: 2014-11-04
Classification: A61K,A61P,A61Q,C08F,C08G

Abstract:
1. A cosmetic composition comprising cationic polymer nanocapsules which have a molecular weight of 5,000-100,000, a surface potential of 5-100 mV and a particle size of 50-500 nm, and encapsulate an oil-soluble active ingredient therein; wherein the oil-soluble ingredient is one or more selected from the group consisting of retinal, retinylacetate, retinylpalmitate, a-tocopherol, tocopherolacetate, tocopheryl linoleate, tocopheryl nicotinate, linoleic acid, coenzyme Q-10, resveratrol, plant extracts, essential oils, ursolic acid, oleanolic acid, oil-soluble licorice and lipoic acid; wherein the cationic polymer nanocapsules are formed from a hydrophobic monomer selected from the group consisting of styrene, p- or m-methylstyrene, p- or m-ethylstyrene, p- or m-chlorostyrene, p- or m-chlorostyrene, styrenesulfonic acid, lactate, glycolide, caprolactone, p- or m-t-butoxystyrene, methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, n-butyl(meth)acrylate, isobutyl(meth)acrylate, t-butyl(meth)acrylate, 2-ethylhexyl(meth)acrylate, n-octyl(meth)acrylate, lauryl(meth)acrylate, stearyl(meth)acrylate, 2-hydroxyethyl(meth)acrylate, polyethyleneglycol(meth)acrylate, methoxypolyethyleneglycol(meth)acrylate, glycidyl(meth)acrylate, dimethylaminoethyl(meth)acrylate, diethylaminoethyl(meth)acrylate, vinyl acetate, vinyl propionate, vinyl butyrate, vinyl ether, allyl butyl ether, allyl glycidyl ether, alkyl(meth)acrylamide and (meth)acrylonitrile and wherein the cationic polymer nanocapsules are present in said composition in an amount of 0.1-10 wt % based on the total weight of the composition.