Maleimide copolymer and a process for producing the same

Details Maleimide copolymer and a process for producing the same Maleimide copolymer and a process for producing the same

C - Chemistry, Metallurgy

08

F

402/216

C08F 222/40 (2006.01) C08F 212/00 (2006.01)

Patent

CA 1335621

A maleimide copolymer which consists essentially of greater than 28% by weight and less than or equal to 65% by weight of a maleimide monomer unit, greater than or equal to 16% by weight and less than 72% by weight of at least one monomer unit selected from the group consisting of aromatic vinyl compound monomer units and methacrylate monomer units, and 0-25% by weight of another vinyl compound monomer unit and which contains 0.1% by weight or less of the residual male- imide monomer and 0.5% by weight or less of volatile components other than the maleimide monomer and which has a ratio (Mw/Mn) of weight average molecular weight Mw to number average molecular weight Mn of 3 or less, a yellowness index of 30 or less and an intrinsic visco- sity of from 0.3 to 1.5. The maleimide copolymer of the present invention is excellent in heat resistance, transparency, chemical resistance, impact resistance, moldability and the like.

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