Chlorinated rubber and polyvinyl chloride composition...

Details Chlorinated rubber and polyvinyl chloride composition... Chlorinated rubber and polyvinyl chloride composition...

C - Chemistry, Metallurgy

08

F

402/420, 402/593

C08F 8/20 (2006.01) C08L 15/02 (2006.01) C08L 27/06 (2006.01)

Patent

CA 1183646

ABSTRACT OF THE DISCLOSURE A chlorinated rubber having a chlorine content of about 5 through about 50% by weight and a Mooney viscosity (ML1+4 at 100°C) of about 20 through about 150 is presented. This chlorinated rubber is derived from the chlorination of (i) a copolymer rubber of ethylene and 1-butene having a mol ratio of ethylene/1-butene of about 85/15 through about 95/5 or (ii) a copolymer rubber of ethylene 1-butene and 5-ethylidene-2-norbornene having a mol ratio of ethylene/1- -butene of about 85/15 through about 95/5 and a content of the 5-ethylidene-2-norbornene of 20% by weight or less based on the weight of the copolymer. The incorporation of the chlorinated rubber into a polyvinyl chloride composi- tion results in the remarkable improvement of the impact resistance and flexibility, both at a low temperature, of the polyvinyl chloride.

401072

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