Method of making a Ziegler-Natta olefin polymerization catalyst

Details Method of making a Ziegler-Natta olefin polymerization catalyst Method of making a Ziegler-Natta olefin polymerization catalyst

1996-08-29

1998-05-05

Caldarola, Glenn

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

Regenerating or rehabilitating catalyst or sorbent

Treating with a liquid or treating in a liquid phase,...

502103, 502104, 502107, 502113, 502117, 502118, 502119, 502132, 502134, 526119, B01J 3100, B01J 3700, C08F 402, C08F 460

Patent

active

057474079

ABSTRACT:
A composition which can be used in, for example, slurry polymerization of an olefin such as, for example, ethylene is produced by a process comprising: (1) combining a first transition metal compound and a metal halide to form a solution; (2) contacting the solution with a precipitating agent to form a solid catalyst intermediate; (3) contacting the solid catalyst intermediate with a second transition metal compound to produce a catalyst composition; and optionally (4) depositing a prepolymer onto the catalyst composition. The precipitating agent comprises a sufficient amount of both a Lewis acid and an ether to effect the precipitation of a solid. Also disclosed is the use of the composition in polymerization of an olefin.

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