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

1986-10-28

1988-04-26

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 88, 526212, 526216, C08F 234

Patent

active

047405716

ABSTRACT:
A process for the gas phase homopolymerization of vinyl chloride or the gas phase copolymerization of vinyl chloride with a monomer copolymerizable therewith, wherein when the breeding ratio first exceeds 3.5 after initiation of the polymerization, the feed rate of a seed polymer is adjusted so that the breeding ratio is maintained at a level of from 3.5 to 5.5.

REFERENCES:
patent: 3642745 (1972-02-01), Golstein
patent: 3692718 (1972-09-01), Golstein
patent: 3810958 (1974-05-01), Takahashi
patent: 3899473 (1975-08-01), Johansson
patent: 4090994 (1978-05-01), Nagano

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