公开(公告)号：US20230322972A1

公开(公告)日：2023-10-12

申请号：US18043088

申请日：2021-09-29

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. HOLTCAMP ,  Laughlin G. MCCULLOUGH ,  Kevin A. STEVENS ,  Dongming LI ,  Robert L. HALBACH ,  Ramyaa MATHIALAGAN ,  Charles J. HARLAN ,  Timothy M. BOLLER

IPC: C08F4/76 ,  C08F4/02 ,  C08F4/80 ,  C08F210/16 ,  C08F2/34

CPC classification number: C08F4/76 ,  C08F4/025 ,  C08F4/80 ,  C08F210/16 ,  C08F2/34 ,  C08F2410/06 ,  C08F2420/08

Abstract: This invention relates to a supported catalyst system comprising: (i) at least one first catalyst component comprising a group 4 metallocycle containing metallocene complex; (ii) at least one second catalyst component comprising a 2,6-bis(imino)pyridyl iron complex; (iii) activator; and (iv) support. The catalyst system may be used for preparing polyolefins, such a bimodal polyethylene, typically in a gas phase polymerization.