Mitsui Toatsu Chemicals, Incorporated

Sugazaki: Kazuo

Norifumi Ito

Mune Iwamoto

Toshihiko Ando

Tetsuyuki Matsubara

The invention provides a rubber dispersed copolymer resin having excellent heat resistance, impact strength and moldability and composed of (1) a dispersed phase formed of a rubbery polymer and copolymerized styrene-type, acrylonitrile-type and maleimide-type monomers, said rubbery polymer specificaly controlled occluding the copolymer of monomers, being grafted with the copolymer and/or forming a multicomponent gel together with copolymers, and (2) a continuous phase formed at least of a specifically controlled copolymer of the styrene-type, acrylonitrile-type and maleimide-type monomers. The resin is useful as a molding material for electric appliances, electronic equipment and cars.

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Yokohama, Japan

Sugazaki: Kazuo