Process for gas phase polymerization of vinyl chloride

Details Process for gas phase polymerization of vinyl chloride Process for gas phase polymerization of vinyl chloride

1987-07-02

1989-05-02

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 62, C08F 234

Patent

active

048269352

ABSTRACT:
A process for the gas phase polymerization of vinyl chloride, which comprises homopolymerizing monomeric vinyl chloride or copolymerizing monomeric vinyl chloride with a monomer copolymerizable therewith in the gas phase at a polymerization temperature of 55.degree. C. to 65.degree. C. under such conditions that the ratio Pr of the polymerization pressure to the saturated vapor pressure at the polymerization temperature is in the range of 1>Pr>0.5, wherein a mixture comprising diisopropylperoxy dicarbonate and di-2-ethoxyethylperoxy dicarbonate at a weight ratio of from 3/2 to 85/15 is used as the initiator.

REFERENCES:
patent: 3156679 (1964-11-01), Roy, Jr.
patent: 3642745 (1972-02-01), Golstein
patent: 3692718 (1972-09-01), Golstein
patent: 3923765 (1975-12-01), Goetze
patent: 3984386 (1976-10-01), Strain
patent: 4090994 (1978-05-01), Nagano
patent: 4584142 (1986-04-01), Tang

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