Addition polymerization process

Details Addition polymerization process Addition polymerization process

1972-01-10

1976-05-04

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252428, 252431C, 252431N, 526119, 526123, 526125, 526303, 526328, 526329, 526541, 526344, 526347, B01J 2726

Patent

active

039546640

ABSTRACT:
A polymerization catalyst consisting of a cupric salt, a copper chelating agent, and a cyanide salt is disclosed for polymerizing vinyl monomers. Such a catalyst system is less hazardous than are the persulfate and peroxide catalysts; the molecular weight of the polymer is higher under comparable polymerization conditions; and the catalyst is not consumed by certain impurities which react with the prior art catalyst.

REFERENCES:
patent: 2927088 (1960-03-01), Michalko et al.
patent: 3303142 (1967-02-01), Maze et al.
patent: 3405114 (1968-10-01), Naarmann et al.
patent: 3409601 (1968-11-01), Borsini et al.
patent: 3487028 (1969-12-01), Smith

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