摘要 |
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. |
申请人 |
UNIVATION TECHNOLOGIES, LLC |
发明人 |
VANDERLENDE, DANIEL, D.;HARLAN, JEFF, C.;PENG, HAIQING;AWE, MICHAEL, D.;KUHLMAN, ROGER, L.;LUE, CHING-TAI;LYNN, TIMOTHY, R.;MARIOTT, WESLEY, R.;ZILKER, DANIEL, P. JR. |