Patent ID: 6314225
Filing Date: 2001-11-06
Classification: C08F,G02B

Abstract:
A copolymer comprising a first monomer unit selected from a N-(halogenated phenyl) maleimide unit or a N-(halogenated biphenyl) bismaleimide unit and one or more second monomer units selected from the group consisting of halogenated acrylates, halogenated styrenes, halogenated vinyl amides, halogenated allyls, halogenated propenyl ethers, halogenated methacrylates, halogenated maleates, halogenated itaconates, and halogenated crotonates;wherein said phenyl groups have substituents R.sub.1 -R.sub.5 and at least one of R.sub.1 -R.sub.5 is selected from the group consisting of CF.sub.3, a C.sub.2 -C.sub.8 perfluoroalkyl group and a perfluoroaryl group; and the remainder of said R.sub.1 -R.sub.5 is selected from the group consisting of F, CF.sub.3, a C.sub.2 -C.sub.8 perfluoroalkyl group and a perfluoroaryl group; andwherein said N-(halogenated biphenyl) bismaleimide has the structure ##STR18##and each of said R groups therein is independently selected from the group consisting of F, CF.sub.3, a C.sub.2 -C.sub.8 perfluoroalkyl group and a perfluoroaryl group.