Producing polyolefin products
作者： Alexander D. Todd , Jeff C. Harlan , Francis C. Rix
DOI:
关键词: Polymer chemistry 、 Methyl group 、 Polymer blend 、 Polyolefin 、 Organic chemistry 、 Alkylation 、 Slurry 、 Catalysis 、 Materials science 、 Dimethoxyethane 、 Benzyl group
摘要: Catalyst systems and methods for making using the same. A method of methylating a catalyst composition while substantially normalizing entiomeric distribution is provided. The includes slurrying organometallic compound in dimethoxyethane (DME), adding solution RMgBr DME, wherein R methyl group or benzyl group, greater than about 2.3 equivalents relative to compound. After addition RMgBr, slurry mixed at least four hours. An alkylated isolated, methylated species has meso / rac ratio that between 0.9 1.2.
lens.org 参考文章(65)
Sun-Chueh Kao, Juliet Bauer Wagner, Stephen P. Jaker, Garth R. Giesbrecht, Multiple catalyst system comprising metallocenes and tridentate nitrogen based ligand complexes for olefin polymerisation ,(2014)
Richard R. Schrock, Robert Baumann, Steven M. Reid, Jonathan T. Goodman, Rüdiger Stumpf, William M. Davis, Synthesis of Titanium, Zirconium, and Hafnium Complexes that Contain Diamido Donor Ligands of the Type [(t-BuN-o-C6H4)2O]2-and an Evaluation of Activated Versions for the Polymerization of 1-Hexene Organometallics. ,vol. 18, pp. 3649- 3670 ,(1999) , 10.1021/OM9905005
Timothy Hosey, Conflict markup tolerant input stream ,(2013)
Nobuhiro Yabunouchi, Masami Watanabe, Noriyuki Tani, Kiyohiko Yokota, Takuji Okamoto, Transition metal compound, catalyst for olefin polymerization, process for preparing olefin polymer by use of catalyst ,(1994)
Kersten A. Terry, Natarajan Muruganandam, Jeevan Abichandani, Hemant G. Patel, George Rodriguez, Catalyst Systems and Polymerization Processes ,(2007)
Eric Paul Wasserman, John Karol Frederick, Purna Chand Sishta, Production of polyethylene using stereoisomeric metallocenes ,(1996)
Parul A. Khokhani, C. Jeff Harlan, Francis C. Rix, Dongming Li, Sun-Chueh Kao, Mixed metal catalyst systems having a tailored hydrogen response ,(2010)
Ching-Tai Lue, James M. Farley, George Alan Vaughan, Sun Chueh Kao, John Francis Szul, Matthew Gary Mckee, Mixed metallocene catalyst systems containing a poor comonomer incorporator and a good comonomer incorporator ,(2002)
Richard R. Schrock, David H. Mcconville, Method of polymerization ,(2000)
Christopher R. Davey, James M. Farley, Rainer Kolb, Agapios K. Agapiou, Richard B. Pannell, Eric J. Markel, Bruce J. Savatsky, Polymerization Processes Using Metallocene Catalysts, Their Polymer Products and End Uses ,(2007)