Abstract
AbstractGrignard reagents, organolithium compounds, sodium naphthalene and aluminum alkyl—metal halide catalysts were examined as initiators for the polymerization of diphenylvinylphosphine oxide. The most effective catalysts studied were Grignard reagents and sodium naphthalene. With Grignard catalysis, polymers of molecular weight up to ∼10,000 were produced although the yield, molecular weight, and crystallinity of the products were influenced by the organic and halide components of the catalyst and by the reaction solvent. Copolymerization studies indicated that the anionic reactivity of diphenylvinylphosphine oxide is between those of styrene and methyl methacrylate. For Grignard catalysis an anionic‐type polymerization mechanism is proposed which requires the formation of polymer—organomagnesium halide adducts in the transition state.
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