Patent ID: 6303725
Filing Date: 2001-10-16
Classification: C08F,C09D

Abstract:
A cyclic dione polymer, which is a copolymer of(a) a cyclic dione monomer selected from those represented by formulae (I) and (II) ##STR14##whereinA and B are the same or different and are independently selected from the group consisting of halogen, hydrogen, methoxy, C.sub.3-20 cyclic or pericyclic alkyl, C.sub.1-20 linear and branched alkyl, C.sub.6-20 aryl, C.sub.7-20 arylalkyl, C.sub.7-20 alkylaryl, silyl, alkylsilyl, germyl, alkylgermyl, alkoxycarbonyl, acyl, and a heterocyclic group; or, A and B are linked together to form a C.sub.3-20 saturated or unsaturated cyclic hydrocarbon group or a substituted or unsubstituted heterocyclic group;C is selected from the group consisting of oxygen, sulfur, ##STR15##--CH.sub.2 --, and --SiH.sub.2 --,wherein each R.sup.1 is independently selected from C.sub.1-20 alkyl and phenyl; and(b) a norbornene monomer or a norbornene derivative monomer selected from the group consisting of ##STR16##whereinm and q are independently integers from 1 to 3,X is selected from O, --NH--, and S,D is an acid-labile protective group, which is decomposed in the presence of an acid, so as to make the cyclic dione copolymer alkali-soluble, andR.sup.3 is selected from the group consisting of hydrogen, C.sub.1-20 linear and branched alkyl, and C.sub.3-20 cyclic and pericyclic alkyl.