Olefin polymerization catalyst compositions and polymerization p

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...

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Other Related Categories

502104, 502119, 526125, 526137, C08F 464

Type

Patent

Status

active

Patent number

044979053

Description

ABSTRACT:
A highly active and stereoselective olefin polymerization catalyst component is obtained by halogenating a magnesium compound of the formula MgR'R" wherein R' is an alkoxide or aryloxide group and R" is an alkoxide or aryloxide group or halogen, with a halide of tetravalent titanium in the presence of a halohydrocarbon, and contacting the halogenated product with thionyl chloride and a tetravalent titanium compound.

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