Process for the production of polyvinyl chloride graft copolymer

Details Process for the production of polyvinyl chloride graft copolymer Process for the production of polyvinyl chloride graft copolymer

1974-09-03

1977-02-01

Holler, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08F26300, C08L 3104

Patent

active

040062015

ABSTRACT:
A process for the production of polyvinyl chloride graft copolymers from ethylene/vinyl acetate copolymers and vinyl chloride by graft polymerization in the aqueous phase consisting essentially of adding a water-soluble, free-radical-forming polymerization catalyst to an aqueous dispersion of an ethylene/vinyl acetate copolymer optionally containing additional emulsifiers and/or dispersion stabilizers, heating said dispersion to the polymerization temperature, adding vinyl chloride gas above said agitated heated dispersion at such rate that the pressure is below the saturation pressure of vinyl chloride at the polymerization temperature, and recovering said polyvinyl chloride grafted copolymer.

REFERENCES:
patent: 3517083 (1970-06-01), Salyer
patent: 3761542 (1973-09-01), Kosaka et al.
patent: 3789083 (1974-01-01), Dumoulin
patent: 3853970 (1974-12-01), Dietrich

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