Polycarbonate resin composition with acrylic impact modifiers

Details Polycarbonate resin composition with acrylic impact modifiers Polycarbonate resin composition with acrylic 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 1303766

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, respect- ively, the impact modifier being a core-shell polymer comprising a core composed of a cross-linked rubbery polymer of an alkyl acrylate wherein the alkyl has 2-8 carbons and a shell composed of a homopolymer or a copolymer of methyl methacrylate which has a glass transition temperature of not less than 60°C, and the core-shell polymer having an acetone soluble fraction of not more than 3% by weight based on the core-shell polymer. The polycarbonate resin composition has an improved impact strength at low temperatures, in particular at temperatures as low as -30°C and is useful as a molding compound.

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