Homogeneous or support vanadium catalyst olefin polymerization p

Details Homogeneous or support vanadium catalyst olefin polymerization p Homogeneous or support vanadium catalyst olefin polymerization p

1990-03-23

1991-05-07

Garvin, Patrick P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502125, 526352, C08F 468

Patent

active

050138030

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 reageant (either the vandium 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 olefines 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: 3238145 (1966-03-01), Loeb
patent: 3281375 (1966-10-01), Vandenberg
patent: 4831000 (1989-05-01), Miro

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