Rubber-reinforced styrene resin composition and process for...

C - Chemistry – Metallurgy – 08 – L

Patent

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C08L 55/02 (2006.01) C08L 25/12 (2006.01)

Patent

CA 2063173

Disclosed is a rubber-reinforced styrene resin composition consisting essentially of: (1) 2-30% by weight of a grafted rubbery polymer wherein 100 parts by weight of a rubbery polymer (I) is grafted with less than 30 parts by weight of a polymer of a monomer component consisting of 10-95% by weight of an aromatic alkenyl compound, 1-60% by weight of an alkenyl cyanide compound and 0-89% by weight of other copolymerizable monomers, (2) 5-40% by weight of a grafted rubbery polymer wherein 100 parts by weight of a rubbery polymer (II) is grafted with 30 parts by weight or more of a polymer of a monomer component consisting of 10-95% by weight of an aromatic alkenyl compound, 1-60% by weight of an alkenyl cyanide compound and 0-89% by weight of other copolymerizable monomers, and (3) 40-93% by weight of a styrene copolymer of a monomer component consisting of 10-95% by weight of an aromatic alkenyl compound, 1-60% by weight of an alkenyl cyanide compound and 0-89% by weight of other copolymerizable monomers. The rubber-reinforced styrene resin composition has excellent matting effect and good physical property balance in respect of heat resistance, processability and impact resistance.

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