Low-temperature impact blends of polycarbonate, graft...

Details Low-temperature impact blends of polycarbonate, graft... Low-temperature impact blends of polycarbonate, graft...

C - Chemistry, Metallurgy

08

L

400/3029

C08L 69/00 (2006.01) C08L 25/12 (2006.01) C08L 51/04 (2006.01) C08L 55/02 (2006.01)

Patent

CA 2000205

8CP 88071 LOW-TEMPERATURE IMPACT BLENDS OF POLYCARBONATE, GRAFT COPOLYMER AND RIGID COPOLYMER ABSTRACT OF THE DISCLOSURE Polymer blend compositions comprising a polycarbonate, a graft copolymer and a rigid copolymer exhibit improved low-temperature impact properties. The polycarbonate has weight average molecular weight, Mw, not less than 35,000 and the rigid copolymer has a weight average molecular weight, Mw, not less than 130,000. The graft copolymer is formed from at least two ethylenically unsaturated monomers graft polymerized to a rubbery polymer substrate. The rigid copolymer is formed from at least two ethylenically unsaturated monomers and is compatible with the graft copolymer.

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