会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Process for the preparation of 1,2-polybutadiene
    • 1,2-聚丁二烯的制备方法
    • US4255543A
    • 1981-03-10
    • US066698
    • 1979-08-15
    • Kenya MakinoToshio MiyabayashiNoboru OhshimaYasumasa Takeuchi
    • Kenya MakinoToshio MiyabayashiNoboru OhshimaYasumasa Takeuchi
    • C08F4/00C08F2/38C08F4/60C08F4/70C08F36/00C08F136/06
    • C08F136/06
    • In the preparation of 1,2-polybutadiene with a vinyl content of at least 70% by contacting 1,3-butadiene with a catalyst consisting of:(A) a cobalt compound,(B) an organic phosphine compound,(C) a trialkylaluminum compound, and(D) water in an amount of 0.1 to 1.2 moles per mole of said trialkylaluminum,in the presence of a molecular weight regulator,(E) an alkylaluminum halide compound is used as the molecular weight regulator in an amount of at least 0.01 mole per mole of the trialkylaluminum compound (C), whereby 1,2-polybutadiene with a regulated molecular weight can be produced without causing decreased polymerization activity and change of vinyl content and crystallinity of the produced polymer. The alkylaluminum halide compound (E) is preferably used in an amount of 0.05 to 1.0 mole per mole of the trialkylaluminum compound (C).
    • 在乙烯基含量为至少70%的1,2-聚丁二烯的制备中,通过使1,3-丁二烯与由(A)钴化合物,(B)有机膦化合物组成的催化剂,(C) 三烷基铝化合物和(D)在每分子量调节剂存在下,每摩尔三烷基铝为0.1至1.2摩尔量的水,(E)烷基卤化铝化合物用作分子量调节剂,其用量为 每摩尔三烷基铝化合物(C)至少0.01摩尔,从而可以制备具有调节分子量的1,2-聚丁二烯,而不会降低聚合活性和所生产的聚合物的乙烯基含量和结晶度的变化。 烷基卤化铝化合物(E)的用量相对于每摩尔三烷基铝化合物(C)为0.05〜1.0摩尔。