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
    • 63. 发明授权
    • Methods of preparing a polymerization catalyst
    • 制备聚合催化剂的方法
    • US08211988B2
    • 2012-07-03
    • US12113061
    • 2008-04-30
    • Max P. McDanielKathy S. Collins
    • Max P. McDanielKathy S. Collins
    • C08F4/24
    • C08F110/02C08F4/18C08F4/24C08F2500/12C08F2500/04
    • A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, and activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst. A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst, and contacting the polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form polyethylene wherein the molecular weight distribution of the polyethylene is broadened.
    • 一种方法,包括使载体与含铬化合物和含锡化合物接触以产生催化剂前体,并在约400℃至约700℃的温度范围内活化催化剂前体以产生聚合 催化剂。 一种方法,包括使载体与含铬化合物和含锡化合物接触以产生催化剂前体,在约400℃至约700℃的温度范围内活化催化剂前体以产生聚合催化剂 ,并在合适的反应条件下在反应区中使聚合催化剂与乙烯接触以形成聚乙烯,其中聚乙烯的分子量分布变宽。