Vinyl chloride resin blend having increased heat distortiion...

Details Vinyl chloride resin blend having increased heat distortiion... Vinyl chloride resin blend having increased heat distortiion...

C - Chemistry, Metallurgy

08

L

400/3056, 400/58

C08L 27/06 (2006.01) C08L 35/06 (2006.01)

Patent

CA 1339944

A polyvinyl chloride resin blend having a high heat distortion temperature, comprising a blend of 60-80 percent by weight of a polyvinyl chloride resin and 20-40 percent by weight of a rubber modified copolymer of a vinyl aromatic monomer, such as styrene, and 14-28 percent by weight of maleic anhydride, the copolymer containing at least one rubber which is a block copolymer rubber of styrene and butadiene or an epichlorohydrin rubber. These resin blends containing a rubber modified copolymer are useful in that they have a higher impact strength than the unmodified copolymer and can be used where a rubber of good light resistance is required.

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