公开(公告)号：US10709645B2

公开(公告)日：2020-07-14

申请号：US15532900

申请日：2015-12-03

Applicant: BASF SE

Inventor： Ewelina Burakowska-Meise ,  Valeria Bem ,  Roland Hinrich Staff ,  Brigitte Lindemann ,  Helmut Witteler

IPC: A61K8/11 ,  B01J13/22 ,  A61K8/81 ,  A61Q17/04 ,  B01J13/08

Abstract: The present invention relates to microcapsules comprising a capsule core and a capsule shell wherein the capsule shell comprises a core surrounding layer of a polyvinyl alcohol and an adjacent layer of a polyoxazoline, a process of their production and their use.

公开(公告)号：US11918672B2

公开(公告)日：2024-03-05

申请号：US16642999

申请日：2018-08-28

Applicant: BASF SE

Inventor： Brigitte Lindemann ,  Stefan Busch ,  Frank Pirrung

IPC: A61K8/49 ,  A61K8/362 ,  A61K8/37 ,  A61K8/46 ,  A61K8/60 ,  A61K8/81 ,  A61Q17/04

CPC classification number: A61K8/4966 ,  A61K8/362 ,  A61K8/37 ,  A61K8/463 ,  A61K8/602 ,  A61K8/8147 ,  A61Q17/04

Abstract: An aqueous polymer dispersion with an average particle size of less than 1000 nm comprising a) a polymer carrier prepared by heterophase radical polymerization of at least one ethylenically unsaturated monomer in the presence of b) an oil-soluble organic UV absorber selected from the class of p-aminobenzoic acid derivatives; salicylic acid derivatives; benzophenone derivatives; diphenyl acrylate derivatives; benzofuran derivatives; polymeric UV absorbers, comprising one or more organosilicon radicals; cinnamic acid derivatives; camphor derivatives; s-triazine derivatives; trianilino-striazine derivatives; menthyl anthranilates; and benzotriazole derivatives; 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 selected from c1) a nonionic surfactant selected from c11) the condensation product of a C6 to C18 fatty alcohol or C6 to C18 fatty acid and a mono- or disaccharide; and c2) an anionic surfactant selected from c21) sulfosuccinates and sulfosuccinamates; c22) fatty alcoholates; and c23) mixtures of phosphoric acid esters and fatty alcohols having from 6 to 18, preferably from 8 to 10, carbon atoms. The aqueous polymer dispersions show unexpectedly high sunscreen effects and a positive skin feeling. They have excellent anti-pollen, anti-dust and anti-oxidant performances in sun screen compositions.