Cyclic dione polymer
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United States of America Patent
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Oct 16, 2001
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N/A
app pub date -
Sep 29, 2000
filing date -
Jun 30, 1998
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Abstract
The present invention provides a cyclic dione polymer, which is a homopolymer or a copolymer of a cyclic dione monomer selected from those represented by formulae (I) and (II) ##STR1## wherein A and B may be the same or different and are independently selected from the group consisting of halogen, hydrogen, 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 heterocylic 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, ##STR2## --CH.sub.2 --, and --SiH.sub.2 --, wherein each R.sup.1 is independently selected from C.sub.1-20 alkyl and phenyl.
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