Process for preparing a vanadium-based catalyst suitable for ole

Details Process for preparing a vanadium-based catalyst suitable for ole Process for preparing a vanadium-based catalyst suitable for ole

1990-08-02

1991-12-03

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...

502107, 502115, 502126, 526125, C08F 4646

Patent

active

050700545

ABSTRACT:
The present invention relates to a process for preparing a Ziegler-Natta type catalyst based on a vanadium compound precipitated on a MgCl.sub.2 spherical support. The catalyst preparation consists of contacting within a liquid hydrocarbon a vanadium-reducing agent chosen from organometallic compounds with a vanadium compound soluble in the liquid hydrocarbon containing at least one halogen and one alkoxy group, and with a support containing (i) MgCl.sub.2 free from Mg-C bond and (ii) an organic electron donor compound free from labile hydrogen. The support consists of spherical particles having a well-defined diameter and a narrow particle size distribution. The catalyst is particularly suitable for manufacturing in a gas phase process elastomeric copolymers of propylene.

REFERENCES:
patent: 4487846 (1984-12-01), Bailly et al.
patent: 4490475 (1984-12-01), Bailly et al.
patent: 4497904 (1985-02-01), Blaya et al.
patent: 4511703 (1985-04-01), Bailly et al.
patent: 4579833 (1986-04-01), Collomb et al.

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