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Polymerization of ethylenically unsaturated monomer employing a catalyst system comprising dialkylpyrocarbonate, organic acid anhydride, alkaline reagent and H.sub.2 O.sub.2
Polymerization of ethylenically unsaturated monomer employing a catalyst system comprising dialkylpyrocarbonate, organic acid anhydride, alkaline reagent and H.sub.2 O.sub.2
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机译:使用包含焦碳酸二烷基酯,有机酸酐,碱性试剂和H2 O.2的催化剂体系聚合烯键式不饱和单体
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摘要
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.
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