New Catalyst System,FeCI3-Et3-nAICIn (n=1, 2), for the Alternating Copolymerization of Butadiene-1,3 with Acrylonitrile |
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Authors: | Akio Masaki |
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Institution: | Government Industrial Research Institute Osaka Midorigaoka , Ikeda , Osaka , Japan |
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Abstract: | Abstract Butadiene-1, 3 and acrylonitrile were copolymerized by alkylaluminum halides and ferric chloride systems. The efficiency of the aluminum components of these systems appears to decrease in the following order: Et2AlCl < EtAlCl2 < Et3Al. Effective catalysts were not necessarily dependent on the mixing orders of the catalyst and monomers. It was found that different feed ratios between two monomers, which were varied over a wide range, always resulted in the formation of 1:1 copolymer. In order to investigate the initiation and propagation reactions, electron paramagnetic resonance was measured and a polarographic method was used on the reduction reaction of ferric chloride with organoaluminum halides in acetonitrile. |
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