Polycarbonate resin composition with dienic impact modifiers

Details Polycarbonate resin composition with dienic impact modifiers Polycarbonate resin composition with dienic impact modifiers

C - Chemistry, Metallurgy

08

L

400/4401

C08L 69/00 (2006.01) C08L 51/06 (2006.01) C08L 67/02 (2006.01)

Patent

CA 1304856

ABSTRACT A polycarbonate resin composition which comprises: 50-80% by weight of a polycarbonate resin, 20-45% by weight of a poly(1,4-butylene terephthalate) resin and 5-30% by weight of an impact modifier, based on the resin composition, respectively, the impact modifier being a core-shell polymer comprising a core of a polybutadiene in amounts of 40-80% by weight and a shell of a methyl methacrylate polymer which has a glass transition temperature of not less than 60°C in amounts of 60-20% by weight, based on the core-shell polymer, respectively. The polycarbonate resin composition has an improved impact strength at low temp- eratures and a small thickness dependence of impact strength, in particular at low temperatures.

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