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    • 39. 发明授权
    • Polymerization process for preparing syndiotactic 1,2-polybutadiene
    • 制备间规1,2-聚丁二烯的聚合方法
    • US06720397B2
    • 2004-04-13
    • US10079205
    • 2002-02-20
    • Steven Luo
    • Steven Luo
    • C08F3604
    • C08F136/06C08F2/02
    • A process for synthesizing syndiotactic 1,2-polybutadiene, the process comprising the steps of (1) polymerizing monomer consisting essentially of 1,3-butadeine monomer within an organic solvent that includes at least 50% by weight of aliphatic solvent by using an iron-based catalyst composition, where said step of polymerizing occurs at a temperature above about 65° C., thereby forming a supersaturated solution of syndiotactic 1,2-polybutadiene, (2) maintaining the supersaturated solution of syndiotactic 1,2-polybutadiene at a temperature above about 65° C. until isolation of the syndiotactic 1,2-polybutadiene is desired, and (3) isolating the syndiotactic 1,2-polybutadiene from the supersaturated solution.
    • 一种用于合成间同立构1,2-聚丁二烯的方法,该方法包括以下步骤:(1)在有机溶剂内将基本上由1,3-丁二烯单体组成的单体聚合,所述有机溶剂包括至少50重量%的脂族溶剂,通过使用铁 其中所述聚合步骤在高于约65℃的温度下发生,从而形成间同立构1,2-聚丁二烯的过饱和溶液,(2)将间同立构1,2-聚丁二烯的过饱和溶液保持在 温度高于约65℃,直到需要间同立构1,2-聚丁二烯的分离,和(3)从过饱和溶液中分离间规1,2-聚丁二烯。