Process for stabilizing ethylenically unsaturated compounds and

Details Process for stabilizing ethylenically unsaturated compounds and Process for stabilizing ethylenically unsaturated compounds and

1992-10-02

1993-11-02

Shah, Mukund J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252405, 544 35, 544 38, 546 15, 546 22, 546188, 546189, 546216, 546226, 546242, 546245, 546247, 546248, 560183, 560201, 560205, 562510, C09K 1522, C09K 1516, C07C 6952, C07C 6116

Patent

active

052581381

ABSTRACT:
A process for stabilizing an ethylenically unsaturated monomer or oligomer from premature polymerization is disclosed whereby a stabilizing amount of an amine, preferably a substituted hindered amine, in combination with phenothiazine or other related heterocyclic moiety is added to said polymerizable monomer or oligomer. The ethylenically unsaturated monomer or oligomer encompass vinyl monomers or oligomers bearing at least one polymerizable moiety. The combination of substituted hindered amine plus phenothiazine inhibits premature polymerization in the liquid and/or vapor phase.

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Derwent Abst. 89-279844/39, 1989.

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