Emulsion polymerization of chloroprene in the presence of a polysulfide modifier
AssigneePetro-Tex Chemical Corporation
InventorMorris S. Edmondson
Life of this patent
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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.
Claims4
A process for the emulsion polymerization of chloroprene which comprises polymerizing polymerizable monomer, consisting essentially of chloroprene and less than 15 mol percent of a comonomer, in the presence of from about 0.05 to 5 parts by weight per 100 parts of polymerizable monomer of a modifier having the formula ##STR15## and mixtures thereof wherein R.sub.2 is a hydrocarbon radical having from 1 to 8 carbon atoms or is a radical the same as ##STR16## R.sub.3 and R.sub.4 are selected from the group consisting of hydrocarbon radicals having from 1 to 8 carbons or hydrogen with at least one of R.sub.3 and R.sub.4 not being hydrogen, 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, and n is 1 to 4.
Dependencies are inferred from the claim text.