Patent ID: 6028154
Filing Date: 2000-02-22
Classification: C08F,G03F

Abstract:
Terpolymer containing 20 to 70 mole percent of repeating structural units of formula (I) and 3 to 40 mole percent of repeating structural units of formula (II): ##STR10## as well as repeating structural units of formula (III): ##STR11## whereby A indicates a direct single bond or a group of the formula: ##STR12## R.sub.1 indicates a hydrogen atom or a methyl group, R.sub.2 indicates a 2-furanyloxy or 2-pyranyloxy group or a group of the formulas: ##STR13## R.sub.3 indicates a group of the formula:--CNR.sub.4 indicates a group selected from the groups of formulas: ##STR14## R.sub.5 indicates a C.sub.1 -C.sub.6 alkyl group or a phenyl group, R.sub.6 indicates a C.sub.1 -C.sub.6 alkyl group or a phenyl group,R.sub.7 indicates a C.sub.1 -C.sub.6 alkyl group or a phenyl group,Y indicates a hydrogen atom or a methyl group,Z indicates a group of the formula --OSi(CH.sub.3).sub.3,m indicates 1, 2 or 3,n indicates 3 minus m, andp indicates 0, 1, 2 or 3and wherebyas many structural units of formula (III) are contained in the terpolymer such that its silicon contents amounts to 7 to 20 weight percent.