申请人:ExxonMobil Chemical Patents Inc.
公开号:US10941229B2
公开(公告)日:2021-03-09
The present disclosure provides group 4-, i.e., zirconium- and hafnium-, containing catalyst compounds having an ether bridged anilide phenolate ligand. Catalyst compounds of the present disclosure can be asymmetric, having an electron donating side of the catalyst and an electron deficient side of the catalyst. In at least one embodiment, catalysts of the present disclosure provide catalyst activity values of 400,000 gP/mmolCat·h−1 or greater and polyolefins, such as polyethylene copolymers, having comonomer content of from about 3.5 wt % to 8.5 wt %, an Mn of about 15,000 g/mol to about 140,000 g/mol, an Mw of from about 100,000 g/mol to about 300,000 g/mol, and a Mw/Mn of from 1 to 2.5. Catalysts, catalyst systems, and processes of the present disclosure can provide polymers having comonomer content of from 7 wt % to 12 wt %, such as from 8 wt % to 10 wt %).
本公开提供了具有醚桥接苯酚酰胺配体的含 4-族(即锆和铪)催化剂化合物。本公开的催化剂化合物可以是不对称的,具有催化剂的供电子侧和催化剂的缺电子侧。在至少一个实施方案中,本公开的催化剂可提供 400,000 gP/mmolCat-h-1 或更高的催化剂活性值和聚烯烃,例如聚乙烯共聚物,其共聚物含量约为 3.5 wt % 至 8.5 wt %,Mn 约为 15,000 g/mol 至约 140,000 g/mol,Mw 约为 100,000 g/mol 至约 300,000 g/mol,Mw/Mn 为 1 至 2.5。本公开的催化剂、催化剂体系和工艺可提供单体含量为 7 wt % 至 12 wt %(例如 8 wt % 至 10 wt %)的聚合物。