Catalysts based on 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligands
申请人:Nagy Sandor
公开号:US20110021727A1
公开(公告)日:2011-01-27
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligand. In one aspect, supported catalysts are prepared by first combining a boron compound having Lewis acidity with excess alumoxane to produce an activator mixture, followed by combining the activator mixture with a support and the tridentate, dianionic Group 4 metal complex. The catalysts are easy to synthesize, support, and activate, and they enable facile production of high-molecular-weight polyolefins.
本文介绍了用于聚合烯烃的催化剂。这些催化剂包括活化剂和一个包含二阴离子、三齿2-(2-芳氧基)喹啉或2-(2-芳氧基)二氢喹啉配体的第四族金属配合物。在一方面,首先将具有路易斯酸性的硼化合物与过量的氧化铝烷混合,以制备活化剂混合物,然后将活化剂混合物与支撑体和三齿、二阴离子的第四族金属配合物相结合以制备支撑催化剂。这些催化剂易于合成、支撑和活化,并能够轻松生产高分子量的聚烯烃。