Patent ID: 6503421
Filing Date: 2003-01-07
Classification: C08F,G02B

Abstract:
A terpolymer containing N-halogenated phenyl maleimide units or phenyl bismaleimide units (I), one or more second units (II) selected from the group consisting of halogenated acrylates, halogenated styrenes, halogenated vinyl ethers, halogenated olefins, halogenated vinyl isocyanates, halogenated N-vinyl amides, halogenated allyls, halogenated propenyl ethers, halogenated methacrylates, halogenated maleates, halogenated itaconates, halogenated crotonates, and compounds of formula (IV): wherein Z is O, S, OC(O), SCN, NC(O), C(O)O, C(O)N, SC(O) or halogenated phenyl and R6 is hydrogen, halogen, alkyl or halogenated alkyl and R7 is an alkyl or halogenated alkyl, aryl or halogenated aryl, and one or more third units (III) comprising a monomer containing both a free radically polymerizable group and a cationic ring opening polymerizable group, wherein the terpolymer is prepared by radical polymerization.