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    Co-supported catalyst system comprising chromium and group 4 metal complex
    17.
    发明申请
    Co-supported catalyst system comprising chromium and group 4 metal complex 审中-公开
    包含铬和4族金属络合物的共支持催化剂体系

    公开(公告)号：US20100190937A1

    公开(公告)日：2010-07-29

    申请号：US12661854

    申请日：2010-03-25

    申请人： Peter Phung Minh Hoang ,  Victoria Ker ,  Bradley Funk

    发明人： Peter Phung Minh Hoang ,  Victoria Ker ,  Bradley Funk

    IPC分类号： C08F4/78 ,  B01J31/12

    CPC分类号： C08F10/00 ,  C08F4/63912 ,  C08F4/63916 ,  C08F4/6392 ,  C08F210/16 ,  C08F2420/04 ,  C08F4/69 ,  C08F4/63904 ,  C08F210/14 ,  C08F2500/04 ,  C08F2500/09 ,  C08F2500/13

    摘要： Polyethylene is made by (co)polymerizing ethylene in a gas-phase reactor using a catalyst system comprising a chromium catalyst and a Group 4 transition metal catalyst, co-supported on an inorganic oxide support. The Group 4 transition metal catalyst is defined by the formula shown, wherein M is a Group 4 metal, PI is a phosphinimide or ketimide ligand (shown), L is a monoanionic ligand which is a cyclopentadienyl or a bulky heteroatom type ligand, m is 1 or 2, n is 0 or 1, and p is an integer. The co-supported catalyst system gives access to polyethylene having a broad or bimodal molecular weight distribution. In the copolymerization of ethylene, reversed or partially reversed comonomer distribution is achieved: the Group 4 component provides polymer segments having higher molecular weight and also higher comonomer incorporation than polymer segments produced at the chromium sites.

    摘要翻译： 聚乙烯通过使用包含铬催化剂的催化剂体系和共担载于无机氧化物载体上的第4族过渡金属催化剂在气相反应器中（共）聚合乙烯制成。 第4族过渡金属催化剂由所示的式所定义，其中M为第4族金属，PI为膦酰亚胺或酮酰亚胺配体（显示），L为单阴离子配位体，其为环戊二烯基或大体积杂原子型配体，m为 1或2，n为0或1，p为整数。 共支持的催化剂体系可获得具有宽或双峰分子量分布的聚乙烯。 在乙烯的共聚合中，实现了反向或部分反转的共聚单体分布：第4组分提供了聚合物链段，其具有比在铬位点产生的聚合物链段更高的分子量和更高的共聚单体掺入。