公开(公告)号：US10647796B2

公开(公告)日：2020-05-12

申请号：US16270699

申请日：2019-02-08

Applicant: FINA TECHNOLOGY, INC.

Inventor： Kenneth P Blackmon ,  David Ribour ,  Shabbir Malbari ,  Tim Coffy ,  Michel Daumerie

IPC: C08F210/06 ,  C08F10/00 ,  C08F4/642

Abstract: A method comprising preparing a multi-component catalyst system comprising a catalyst and a cocatalyst, and adjusting the level of at least one component of the catalyst system to maintain a user-desired level of catalyst activity throughout a process, wherein the component comprises a catalyst activator and wherein the catalyst activator comprises the catalyst or the cocatalyst. A method comprising contacting a polymerization catalyst system comprising a Ziegler-Natta catalyst and a cocatalyst with a catalyst activator at least twice during a polymerization process, wherein the polymerization process is carried out in a reactor system comprising multiple reactor types.