Abstract
The copolymerization of acrylonitrile with vinyl derivatives of silicon by an anionic mechanism was studied in the presence of n-butyl lithium. The lithium-initiated copolymerization of the monomers used was found not to yield random copolymers. Type A-B block copolymers of vinyltrimethyl(phenyl)silanes and acrylonitrile with various block lengths were produced by the “living” chain mechanism. The first stage in the synthesis consisted of vinyltrimethyl-(phenyl)silane polymerization over n-butyl lithium and was carried out in heptane at 20°C; the second stage—the acrylonitrile polymerization—took place at 0°C on the “living” polyvinyltri-organo-silane anions.
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