公开(公告)号：US20220332864A1

公开(公告)日：2022-10-20

申请号：US17640172

申请日：2020-08-14

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： Xiaodan ZHANG ,  Christopher G. BAUCH ,  Lubin LUO ,  Jeffrey L. BRINEN ,  George J. PEHLERT ,  Todd S. EDWARDS ,  Sung A. KIM

IPC: C08F210/06

Abstract: Provided herein are methods of polymerizing α-olefin monomer with a catalyst and hydrogen in a slurry to produce low molecular weight polyolefins. Hydrogen is vented from the low molecular weight polyolefins and then the low molecular weight polyolefins are further polymerized in a gas phase to produce a polyolefin having a molecular weight distribution of between 4.0 and 30 and a flexural modulus between 1500 mPa and 2500 mPa.