Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1988-11-28
1990-09-04
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...
502112, 502120, 502125, 502126, 526128, C08F 468
Patent
active
049544713
ABSTRACT:
Disclosed is a homogeneous vanadium catalyst composition prepared by the reaction of an alkylaluminum dihalide with a solid reaction product produced by reacting (A) a silicon alkoxide, (B) a hydrocarbon soluble vanadium compound, and (C) a trialkylaluminum. The solid reaction product may be produced by complexing the (A) silicon alkoxide first with either the (B) vanadium compound or the (C) trialkylaluminum. The intermediate complex (I) of such reaction is then treated with the remaining reagent (either the vanadium compound or the trialkylaluminum as the case may be) whereupon the solid reaction product (II) is formed. The solid reaction product (II) of the silicon alkoxide-vanadium compound/trialkylaluminum reaction is then reacted with (D) an alkylaluminum dihalide to produce a homogeneous hydrocarbon soluble product (III) which is highly active for catalyzing the polymerization of olefins to a polyolefin having a narrow molecular weight distribution. Further, the hydrocarbon soluble product (III) may be used to treat a catalyst support material (E) to produce a heterogeneous supported vanadium-containing catalyst composition (IV) which is highly active for catalyzing the production of polyolefins having a narrow molecular weight distribution.
REFERENCES:
patent: 2943063 (1960-06-01), Eby et al.
patent: 3135809 (1964-06-01), Bosmajian
patent: 3238145 (1966-03-01), Loeb
patent: 3281375 (1966-10-01), Vandenberg
patent: 4831000 (1989-05-01), Miro
Exxon Chemical Patents Inc.
Garvin Patrick P.
Hunt J. F.
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