Chelate-activated vinyl chloride polymerization process

Details Chelate-activated vinyl chloride polymerization process Chelate-activated vinyl chloride polymerization process

1983-04-25

1985-09-03

Henderson, Christopher A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 90, 5263442, C08F 218

Patent

active

045393818

ABSTRACT:
Process for the polymerization of vinyl chloride in aqueous suspension or microsuspension using an organo-soluble free-radical-yielding initiator wherein the initiator is progressively activated during polymerization by the progressive reduction of a non-initiator-activating water-soluble metal chelate complex to an initiator-activating form of the complex (which is otherwise substantially stable under the polymerization conditions) in which the metal is in a lower oxidation state, preferably a one- or two lower oxidation state.

REFERENCES:
patent: 4091197 (1978-05-01), Fischer
patent: 4205161 (1980-05-01), Wiest

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