| 摘要 |
Butadiene in the liquid or dissolved state is polymerized to form a solid non-sticky polymer of preponderantly 1 : 2-linkage by use of a catalyst prepared by reaction of (a) a chloride of Mn, Fe, Co or Ni or an acetylacetonate of Co or Ni with (b) an organosodium compound, e.g. n-amyl-Na and (c) an organocadmium compound, e.g. Et2Cd. At least one hydrocarbon solvent, e.g. an aliphatic hydrocarbon such as n-pentane, is preferably used. After polymerization the catalyst is destroyed by an aliphatic alcohol, preferably ethanol, and the polymer is washed successively with aqueous ethanolic HC1, water and ethanol, the latter containing an antioxidant such as betaphenylnaphthylamine.ALSO:Butadiene in the liquid or dissolved state is polymerized to form a solid non-sticky polymer of preponderantly 1:2-linkage by use of a catalyst prepared by reaction of (a) a chloride of Mn, Fe, Co or Ni or an acetylacetonate of Co or Ni with (b) an organosodium compound, e.g. n-amyl-Na and (c) an organocadmium compound, e.g. Et2Cd. At least one hydrocarbon solvent, e.g. an aliphatic hydrocarbon such as n-pentane, is preferably used. After polymerization the catalyst is destroyed by an aliphatic alcohol, preferably ethanol, and the polymer is washed successively with aqueous ethanolic HCl, water and ethanol, the latter containing an antioxidant such as betaphenylnaphthylamine.
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