A method of polymerizing olefins is disclosed. The method comprises contacting ethylene and at least one comonomer with a catalyst system to produce a polyolefin polymer that is multimodal. The catalyst system comprises a first catalyst that promotes polymerization of the ethylene into a low molecular weight (LMW) portion of the polyolefin polymer and a second catalyst that promotes polymerization of the ethylene into a high molecular weight (HMW) portion of the polyolefin polymer. The first catalyst and at least a portion of the second catalyst are co-supported to form a commonly-supported catalyst system and at least a portion of the second catalyst is added as a catalyst trim feed to the catalyst system.
申请公布号
MX2016010309(A)
申请公布日期
2016.12.20
申请号
MX20160010309
申请日期
2015.02.10
申请人
UNIVATION TECHNOLOGIES, LLC
发明人
Roger L. KUHLMAN;Timothy R. LYNN;Wesley R. MARIOTT;Ching- Tai LUE;Daniel D. VANDERLENDE;Jeff C. HARLAN;Haiqing PENG;Michael D. AWE;Daniel P. ZILKER, JR.