公开(公告)号：DE3312668A1

公开(公告)日：1984-10-11

申请号：DE3312668

申请日：1983-04-08

Applicant: BASF AG

Inventor： STRAUB FERDINAND DR ,  SANNER AXEL DR ,  SEIB KARL DR ,  LANG SIEGFRIED DR

IPC: C08F20/00 ,  A61K8/00 ,  A61K8/81 ,  A61K9/16 ,  A61K9/28 ,  A61K9/32 ,  A61K47/00 ,  A61Q5/06 ,  C08F20/26 ,  C08F26/00 ,  C08F26/10 ,  C08F218/00 ,  C08F218/02 ,  C08F218/04 ,  C08F220/28 ,  C08F226/10 ,  C08F218/08 ,  A61K31/60 ,  A61K7/00

Abstract: Readily water-soluble, slightly hygroscopic terpolymers which consist of (a) from 10 to 40% by weight of vinylpyrrolidone, (b) from 20 to 50% by weight of vinyl acetate (VAc) or vinyl propionate and (c) from 10 to 40% by weight of hydroxyethyl acrylate, hydroxypropyl acrylate or hydroxyethyl methacrylate, which terpolymers are used as auxiliaries in the cosmetics and pharmaceuticals sectors.

公开(公告)号：DE3227334A1

公开(公告)日：1984-01-26

申请号：DE3227334

申请日：1982-07-22

Applicant: BASF AG

Inventor： STRAUB FERDINAND DR ,  SANNER AXEL DR ,  SEIB KARL DR ,  LINKE WOLFGANG DR

IPC: A61K8/81 ,  A61Q5/06 ,  C08F220/18 ,  C08F220/16 ,  C08F226/00 ,  C08F220/04 ,  A61K7/11

Abstract: 1. A copolymer obtained by free-radical copolymerization of an alkyl acrylate or methacrylate, a neutral nitrogen-containing water-soluble monomer, a monomer containing cationic groups, and an olefinically unsaturated carboxylic acid of 3 or 4 carbon atoms, characterized in that it is obtained by free-radical copolymerization of a) 20 to 75% by weight of ethyl, n-butyl, tert.-butyl or lauryl acrylate or methacrylate or mixtures thereof, b) 5 to 50% by weight of N-vinylpyrrolidone, N-vinylcaprolactam or mixtures thereof, c) 1 to 25% by weight of N-vinylimidazole, 1-vinyl-2-methylimidazole or mixtures thereof, and d) 1 to 25% by weight of acrylic acid or methacrylic acid, and has a Fikentscher K value of from 15 to 75, measured in ethanol at 25 degrees C.