Patent ID: 6248836
Filing Date: 2001-06-19
Classification: A61K,A61Q,B01F,C04B,C08F,C11D,D21H

Abstract:
An amphiphilic graft copolymer comprising: a pre-formed graft base polymer comprising at least 5% by weight based on the total weight of the graft base polymer of units of the formula ##STR9## ##STR10##grafted with at least one monomer selected from the group consisting of styrene, a C.sub.1 - to C.sub.2 -alkylstyrene and vinyltoluene and optionally other monoethylenically unsaturated monomers copolymerizable therewith, wherein the ratio by weight of said preformed graft base polymer to said monomer is from 1:99 to 99:1, and at least 5 mole % of the group ##STR11##is cleaved off from the graft polymer thereby forming amino groups, and R.sup.1 and R.sup.2 are H or C.sub.1 - to C.sub.6 -alkyl.