Emulsion polymerization of chloroprene in the presence of a poly

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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526223, 526224, 526295, C08F 200, C08F 3400, C08F 3618, C08F23618

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040618501

ABSTRACT:
Chloroprene is polymerized in the presence of compounds of the formula ##STR1## where X, Y and Z are selected from the group consisting of oxygen and sulfur, R.sub.1 is a hydrocarbon radical having from 1 to 8 carbon atoms, R.sub.2 is a hydrocarbon radical having from 1 to 8 carbon atoms or is a radical the same as ##STR2## R.sub.3 and R.sub.4 are selected from the group consisting of hydrocarbon radicals having from 1 to 8 carbon atoms or hydrogen with at least one of R.sub.3 and R.sub.4 not being hydrogen and n is 1 to 4.

REFERENCES:
patent: 1950439 (1934-03-01), Carothers
patent: 2264173 (1941-11-01), Collins
patent: 2396997 (1945-04-01), Fryling
patent: 3190865 (1965-06-01), Miller

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