Polymerization catalysts for producing polymers with high comonomer incorporation
申请人:Yang Qing
公开号:US20090088537A1
公开(公告)日:2009-04-02
The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridged η
5
-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and a activator. The bridged η
5
-cyclopentadienyl-type ligands are connected by a cyclic substituent. The catalysts of the present techniques may be more effective at the incorporation of comonomers into the backbone of a polyolefin polymer.
本技术涉及催化剂组成、方法和聚合物,包括一种第四族金属茂金属化合物,其包含桥接的η5-环戊二烯基型配体,通常与协同催化剂和活化剂结合使用。桥接的η5-环戊二烯基型配体通过环状取代基相连。本技术的催化剂可能更有效地将共聚单体并入聚烯烃聚合物的骨架中。