Catalyst component for the polymerization of olefins

Details Catalyst component for the polymerization of olefins Catalyst component for the polymerization of olefins

2007-11-14

2011-10-11

Wu, David (Department: 1762)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

C502S156000, C502S172000, C526S209000

Reexamination Certificate

active

08034735

ABSTRACT:
A catalyst component for the polymerization of olefins comprises Mg, Ti, halogen, and an alpha-omega-diether represented by the general formula: (RO)—(CR1R2)n—(OR), wherein the number of n is from 5 to 10, R is an alkyl, cycloalkyl or aryl radical containing 1 to 12 carbons, and R1and R2are independently from each other hydrogen, an alkyl, cycloalkyl or aryl radical containing 1 to 12 carbons. The catalysts prepared with such component provide a high mileage for the production of polyolefins with a high bulk density of the polymer produced in gas-phase polymerization process or in slurry polymerization process. Such catalyst produces narrower MWD PE, if compared with other catalyst systems.

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Kim, et al., “Copolymerization of Ethylene and 1-Butene with Highly Active Ticl4/THF/MgCl2, TiCl4/THF/MgCl2/SiO2, and TiCl31/3AlCl3Catalyst,”Journal of Polymer Science: Part A: Polymer Chemistry, 32, (1994), pp. 2979-2987.

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