Patent ID: 6063488
Filing Date: 2000-05-16
Classification: B41M,C08F,Y10S,Y10T

Abstract:
A hydrophilic acrylic copolymer having a crosslinked structure, and comprising:(a) a recurring unit derived from a nitrogen-containing acrylic monomer having, in its molecule, at least two CH.sub.2 .dbd.CR.sup.1 --CO-- groups, where R.sup.1 is a hydrogen atom, a methyl group or an ethyl group, and at least one --N.sup.+ R.sup.2.sub.3.X.sup.- group, where each R.sup.2 is independently a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or an alkylol group of 1 to 5 carbon atoms, and X is a halogen atom, ora recurring unit derived from a nitrogen-containing acrylic monomer having, in its molecule, at least one CH.sub.2 .dbd.CR.sup.1 --CO-- group, where R.sup.1 is a hydrogen atom, a methyl group or an ethyl group, and at least two --N.sup.+ R.sup.2.sub.3.X.sup.- groups, where each R.sup.2 is independently a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or an alkylol group of 1 to 5 carbon atoms, and X is a halogen atom, and(b) a recurring unit derived from an acrylic monomer represented by the following formula (A):CH.sub.2 .dbd.CR.sup.3 --CO--Q (A)wherein R.sup.3 is a hydrogen atom, a methyl group or an ethyl group, and Q is --NH.sub.2, --NH--R.sup.4 --OH, where R.sup.4 is an alkylene group of 1 to 5 carbon atoms, or --R.sup.5, where R.sup.5 is a hydrogen atom or an alkoxy group of up to 20 carbon atoms.