Heat resistant polyvinyl chloride copolymer and preparation...

Details Heat resistant polyvinyl chloride copolymer and preparation... Heat resistant polyvinyl chloride copolymer and preparation...

C - Chemistry, Metallurgy

08

F

400/2050

C08F 259/04 (2006.01)

Patent

CA 1339984

A heat resistant polyvinyl chloride copolymer or a heat and impact resistant polyvinyl chloride copolymer is prepared by conducting graft copolymerization of N-substituted maleimide on a vinyl chloride resin or a rubber containing vinyl chloride resin. The graft copolymerization reaction is carried out in the presence of a radical polymerizable monomer which is (1) liquid at the polymerization temperature, (2) capable of dissolving the N-substituted maleimide at the temperature, (3) 70°C or more in glass transition temperature of the polymer thereof, and (4) used in an amount sufficient to dissolve the N-substituted maleimide.

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