Method for preparing a solid catalyst component for ethylene (co

Details Method for preparing a solid catalyst component for ethylene (co Method for preparing a solid catalyst component for ethylene (co

1991-06-14

1992-12-22

Schofer, Joseph L.

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

Catalyst or precursor therefor

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

502103, 502104, 502119, 502120, 502125, 526119, 526126, C08F 402

Patent

active

051734656

ABSTRACT:
A solid catalyst component for ethylene (co)polymerization, consisting of a particulate silica support and a catalytically active part containing titanium, magnesium, chlorine and alkoxy groups is obtained by a) preparing a solution of magnesium chloride in ethanol; b) impregnating particulate silica with said solution; c) eliminating the unabsorbed ethanol from the suspension; d) eliminating absorbed ethanol from the solid; e) interacting the resultant solid with a titanium chloride, alkoxide or chloroalkoxide; and possibly interacting with an alkylaluminium chloride. In a preferred embodiment in stage e), a silicon halide is added to improve the catalyst activity.

REFERENCES:
patent: 4421674 (1983-12-01), Invernizzi
patent: 4467044 (1984-08-01), Band
patent: 4477588 (1984-10-01), Hawley

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