Components and catalysts for the polymerization of olefins

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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5261253, 526351, C08F 4651, C08F 1006

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active

056187718

ABSTRACT:
Disclosed are catalysts for the polymerization of alpha-olefins which comprise the reaction product of:
(a) an Al alkyl compound;
(b) a silicon compound containing at least a Si--OR or Si--OCOR or Si--NR.sub.2 bond, R being a hydrocarbyl radical;
(c) a solid comprising, as essential support, a Mg dihalide in active form and, supported thereon, a Ti halide or a halo-Ti-alcoholate and a particular, selected type of electron-donor compound.

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patent: 4581426 (1986-04-01), Asanuma et al.

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