Patent ID: 6329483
Filing Date: 2001-12-11
Classification: A61K,A61Q,C08F

Abstract:
A copolymer obtainable by free-radical polymerization ofA) 50-99.99% by weight of an olefinically unsaturated C.sub.3 -C.sub.5 monocarboxylic acid, of an olefinically unsaturated C.sub.4 -C.sub.8 dicarboxylic acid or the anhydride thereof or a mixture of such carboxylic acids or anhydrides withB) 0.1-29.95% by weight of an olefinically unsaturated quaternary ammonium compound of the formula I or II ##STR6##whereR.sup.1 is C.sub.6 -C.sub.20 -alkyl, C.sub.6 -C.sub.20 -alkenyl, C.sub.5 -C.sub.8 -cycloalkyl, phenyl, phenyl(C.sub.1 -C.sub.12 -alkyl) or (C.sub.1 -C.sub.12 -alkyl)phenyl,R.sup.2 is hydrogen, methyl or phenyl,R.sup.3 and R.sup.4 are each H or C.sub.1 -C.sub.4 -alkyl,X is halogen, C.sub.1 -C.sub.4 -alkoxysulfonyloxy or C.sub.1 -C.sub.4 -alkanesulfonate, it also being possible for the latter to occur as R.sup.3 or R.sup.4 with the formation of a betaine structure,Y is O or NH, andA is C.sub.1 -C.sub.6 -alkylene, or a mixture of such ammonium compounds,C) 0 to 49.99% by weight of an acrylate or methacrylate of the formula III ##STR7##where R.sup.1, R.sup.2 and Y have the abovementioned meanings, R.sup.5 is hydrogen, methyl or ethyl, and n is a number from 0 to 25,D) 0-29.85% by weight of other copolymerizable monomers andE) 0.5-2% by weight of one or more compounds with at least two olefinically unsaturated groups in the molecule as crosslinker.