Impact-resistant polyvinyl chloride based on ethylene-vinyl...

Details Impact-resistant polyvinyl chloride based on ethylene-vinyl... Impact-resistant polyvinyl chloride based on ethylene-vinyl...

C - Chemistry, Metallurgy

08

L

400/3073

C08L 27/06 (2006.01) C08L 51/06 (2006.01)

Patent

CA 1069643

ABSTRACT OF THE DISCLOSURE: Impact - resistant polyvinyl chloride compositions, based on ethylene - vinyl acetate or ethylene - alkyl acrylate copolymers. These are formed by a polymer mixture of (a) 4 to 15% by weight of a graft polymer, containing an ethylene copolymer with 2.5 to 15% by weight of copolymerised vinyl acetate or alkyl acrylate as the base polymer and 5 to 70% by weight of vinyl chloride grafted onto the copolymer in the gel phase, (b) up to 96% by weight of polyvinyl chloride and/or vinyl chloride copolymers and (c) conventional additives. The PVC compositions of the invention have improved U-notched impact strength; they are particularly suitable for use as weather-resisting materials.

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