Catalyst composition for preparing high density or linear low de

Details Catalyst composition for preparing high density or linear low de Catalyst composition for preparing high density or linear low de

1988-01-15

1989-05-16

Garvin, Patrick P.

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

Catalyst or precursor therefor

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

502113, 526116, C08F 464

Patent

active

048310000

ABSTRACT:
There is disclosed a catalyst composition for the polymerization of olefins, particularly alpha-olefins. The composition is prepared by synthesizing a catalyst precursor and then combining it with a conventional catalyst activator. The precursor is synthesized by: (a) contacting a solid, porous carrier with an aluminum compound; (b) contacting the resulting product with a mixture of vanadium and titanium compounds; (c) contacting the product with an ether; and, (d) pre-activating the product of step (c) with a mixture of a halogenating agent and an aluminum compound.
The catalyst composition is used without a halogenating agent in the polymerization medium to produce narrow molecular weight distribution HDPE and LLDPE products, or with a halogenating agent in the polymerization medium to produce broad molecular weight distribution LLDPE and HDPE products.

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