Patent ID: 6303687
Filing Date: 2001-10-16
Classification: C08F,G02B

Abstract:
A crosslinkable polymer based on a polyhydroxyl compound which is a derivative of a polyvinyl alcohol having a molecular weight of at least about 2000 which comprises from about 0.5 to about 80%, based on the number of hydroxyl groups in the polyvinyl alcohol, of units of the formula I, IV and VI, I and IV or I and VI ##STR24##in which R is alkylene having up to 12 carbon atoms, R.sub.1 is hydrogen or lower alkyl, R.sub.2 is an olefinically unsaturated, electron-withdrawing, crosslinkable radical, preferably having up to 25 carbon atoms, and R.sub.3 is hydrogen, a C.sub.1 -C.sub.6 alkyl group or a cycloalkyl group, ##STR25##wherein R and R.sub.3 are as defined above, and R.sub.7 is a primary, secondary or tertiary amino group or a quaternary amino group of the formula VN.sym.(R').sub.3 X.crclbar. (V)in which each R', independently of the others, is hydrogen or a C.sub.1 -C.sub.4 alkyl radical and X is a counterion ##STR26##in which R and R.sub.3 are as defined above, and R.sub.8 is the radical of a monobasic, dibasic or tribasic, saturated or unsaturated, aliphatic or aromatic organic acid or sulfonic acid.