High impact strength thermoplastic compositions

Details High impact strength thermoplastic compositions High impact strength thermoplastic compositions

C - Chemistry, Metallurgy

08

L

400/1133, 400/63

C08L 51/04 (2006.01) C08F 279/02 (2006.01) C08L 71/04 (1980.01)

Patent

CA 1040782

ABSTRACT OF THE DISCLOSURE There are provided high impact strength thermoplastic compositions comprising a polyphenylene ether and a rubber modified polystyrene resin, the polystyrene matrix in the composition having an intrinsic viscosity of at least 1.0 deciliters/gram. Such compositions, which contain polystyrene of substantially higher molecular weight than heretofore, provide molded articles with unexpected improvements in impact resistance, surface appearance and resistance to aggressive solvent systems. Also provided are high impact compositions, useful per se or for blending with polyphenylene ethers, com- prising polyblends of rubber dispersed in a polystyrene matrix, the polystyrene having an intrinsic viscosity of at least 1.0 deciliters/gram.

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