Maleimide-based copolymer, method for producing same, and resin composition obtained using same

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United States of America

PATENT NO 12129327
APP PUB NO 20230235101A1
SERIAL NO

18160991

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Abstract

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This maleimide-based copolymer contains 40-60 mass % of aromatic vinyl monomer units, 5-20 mass % of vinyl cyanide monomer units, and 35-50 mass % of maleimide monomer units, and is such that a 4 mass % tetrahydrofuran solution of the copolymer has a transmittance of 90% or more for light having a wavelength of 450 nm at an optical path length of 10 mm, and the residual maleimide-based monomer amount is less than 300 ppm. This maleimide-based copolymer preferably further contains 0-10 mass % of unsaturated dicarboxylic acid anhydride monomer units, and preferably has a glass transition temperature of 165° C. or higher.

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Patent Owner(s)

Patent OwnerAddress
DENKA COMPANY LIMITED1-1 NIHONBASHI-MUROMACHI 2-CHOME CHUO-KU TOKYO 1038338 ?1038338

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsumoto, Masanori Ichihara, JP 117 554
Nishino, Kohhei Ichihara, JP 8 6
Noguchi, Tetsuo Ichihara, JP 19 115

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