Block-copolymerized-rubber-modified styrene copolymers

Details Block-copolymerized-rubber-modified styrene copolymers Block-copolymerized-rubber-modified styrene copolymers

C - Chemistry, Metallurgy

08

F

400/3053, 400/30

C08F 287/00 (2006.01) C08F 212/10 (2006.01) C08F 279/04 (2006.01)

Patent

CA 1339648

The present invention relates to rubber-modified styrene copolymer prepared by polymerizing a styrene monomer and an acrylonitrile monomer in the presence of a rubbery polymer which contains about 2 - 30 wt % of styrene monomer, and contains a copolymer of styrene and acrylonitrile in a grafted or occluded form having an occlusion and graft index of 25 - 150%, that exhibits excellent rigidity, impact strength, external appearance and fluidity, while retaining rigidity, impact properties and external appearance, and when prepared by copolymerizing a maleimide monomer, has high heat resistance and therefore is suitable for materials for components of electric equipments, electronic equipments, automobiles and business machines.

609135

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