copolímero de maleimida, processo para a produção do mesmo e composições de resina resistentes ao calor que contêm o mesmo.

摘要

Provided is a maleimide copolymer which exhibits an excellent hue, an effect of imparting high heat resistance, and excellent kneadability. Specifically provided is a maleimide copolymer which comprises 50 to 60 mass% of a styrene monomer unit, 30 to 50 mass% of a maleimide monomer unit, and 0 to 10 mass% of an unsaturated dicarboxylic anhydride monomer unit, and which has a weight-average molecular weight (Mw) of 90,000 to 130,000 and a residual maleimide monomer content of 300 ppm or lower.