Polymerization of ethylenically unsaturated monomer employing a

Details Polymerization of ethylenically unsaturated monomer employing a Polymerization of ethylenically unsaturated monomer employing a

1975-05-30

1976-10-12

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 63R, 260750A, 260 7841, 526227, 526230, 260861, 260862, 260DIG28, C08F11402, C08F11416, C08G 200, C08G 6312

Patent

active

039857204

ABSTRACT:
Ethylenically unsaturated material susceptible to free-radical polymerization, e.g., vinyl chloride monomer, is polymerized, e.g., in an aqueous medium, with an initiator system comprising, in combination, alkaline reagent, e.g., sodium bicarbonate, organic acid anhydride, e.g., isobutyric anhydride, peroxygen compound selected from organic peroxy acid (peracid), e.g., peracetic acid, and hydrogen peroxide, and alkyl pyrocarbonate, e.g., diethyl pyrocarbonate. The initiator system is added to the polymerization medium in amounts sufficient to polymerize the ethylenically unsaturated material.

REFERENCES:
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patent: 3108093 (1963-10-01), Pajaczkowski et al.
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patent: 3575945 (1971-04-01), Cantoni et al.
patent: 3580955 (1971-05-01), Bafford
patent: 3637633 (1972-01-01), Dixon et al.
patent: 3821273 (1974-06-01), D'Angelo
patent: 3857828 (1974-12-01), Sanchez
patent: R25763 (1965-04-01), Marous et al.

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