Patent ID: 11918672
Assignee: BASF SE
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. An aqueous polymer dispersion with an average particle size of less than 1000 nm comprising
a) a polymer carrier which is an acrylate/C12-C22 alkyl methacrylate copolymer;
b) an oil-soluble organic UV absorber, corresponding to the compound of formula, wherein the weight ratio of the oil-soluble organic UV absorber (b) to polymer carrier (a) is greater than 50 parts UV absorber per 100 parts of carrier; and
c) a surfactant which comprises
c1) a nonionic surfactant selected from the group consisting of lauryl glucoside, coco-glucoside, sucrose polystearate and decyl glucoside
and
c2) an anionic surfactant selected from the group consisting of lauryl sulfosuccinate, cetyl sulfosuccinate, stearyl sulfosuccinate, and mixtures thereof.