公开(公告)号：US20160347889A1

公开(公告)日：2016-12-01

申请号：US15116696

申请日：2015-02-10

Applicant: UNIVATION TECHOLOGIES, LLC

Inventor： Ching-Tai Lue ,  Francis C. Rix ,  C. Jeff Harlan ,  Laughlin G. McCullough

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C07F17/00 ,  C08F2/00 ,  C08F2/34 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F4/76 ,  C08F210/02 ,  C08F210/08 ,  C08F210/14 ,  C08F2410/02 ,  C08F2420/00 ,  C08F2420/01 ,  C08F2500/01 ,  C08F2500/02 ,  C08F2500/08 ,  C08F2500/09 ,  C08F2500/10 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/13 ,  C08F2500/18 ,  C08F2800/20 ,  C08J5/18 ,  C08J2323/08 ,  C08L23/0815 ,  C08F2500/03

Abstract: Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C5HaR1b)(C5HcR2d)HfX2. The second catalyst compound includes at least one of the following general formulas: In both catalyst systems, the R groups can be independently selected from any number of substituents, including, for example, H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, among others.