Impact-and weather-resistant thermoplastic polyblends

Details Impact-and weather-resistant thermoplastic polyblends Impact-and weather-resistant thermoplastic polyblends

C - Chemistry, Metallurgy

08

L

400/3035

C08L 51/04 (2006.01) C08L 51/00 (2006.01) C08L 51/06 (2006.01)

Patent

CA 1317388

08-12(1475)A IMPACT- AND WEATHER-RESISTANT THERMOPLASTIC POLYBLENDS ABSTRACT OF THE DISCLOSURE Thermoplastic polyblends having weatherability and impact strength are formed by blending a first graft copolymer containing a conjugated diene rubber substrate having a weight average particle size between about 0.6 and about 10 microns with a second graft copolymer con- taining an EPDM-type rubber substrate having a weight average particle size between about 0.05 and about 1 micron or an alkyl acrylate rubber substrate having a weight average particle size between about 0.05 and about 0.5 micron. The superstrate of the two graft copolymers comprises a monovinylidene aromatic hydrocarbon and an unsaturated nitrile.

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