Vinyl halide-polyolefin polymers and copolymers and method...

Details Vinyl halide-polyolefin polymers and copolymers and method... Vinyl halide-polyolefin polymers and copolymers and method...

C - Chemistry, Metallurgy

08

L

400/2025

C08L 51/00 (2006.01) C08F 255/00 (2006.01)

Patent

CA 1178736

Case 4215 DAS/smt 10/1/80 VINYL HALIDE-POLYOLEFIN POLYMER AND COPOLYMERS AND METHOD OF MAKING ABSTRACT The present invention relates to production of vinyl halide- polyolefin graft copolymers by a liquid phase bulk polymerization process wherein the process is carried out in the presence of a diluent. Suitable diluents preferably have vaporization pressure characteristics, within 100 psi., and similar liquid state vis- cosity, as vinyl halide monomer. The diluents are soluble in vinyl halide monomer under reaction conditions and are inert to the polymerization mass. The diluents are straight or branched chain, or cyclic saturated hydrocarbons having from about 3 to about 15 carbon atoms and, more preferably, from about 4 to about carbon atoms. Particularly useful diluents are n propane, n- butane, isobutane or mixtures thereof. The diluents are utilized in amounts from about 0.2 to less than about 50.0 percent based upon the total weight of the reaction charge.

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