Polymerization catalyst, method of making and use therefor

Details Polymerization catalyst, method of making and use therefor Polymerization catalyst, method of making and use therefor

1985-04-01

1986-10-28

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526120, 526123, 526130, 526352, 502113, 502117, 502154, 502155, C08F 462, C08F 468

Patent

active

046199802

ABSTRACT:
Polymerization catalyst consisting essentially of treated silica support and zerovalent chromium compound is provided, as well as process for preparation and polymerization process with the invention catalyst. Silica treatment involves contacting a predominantly silica-containing support with at least one compound selected from the group consisting of Group IIA oxide or compounds convertible to the oxide form, a Group VA or VB oxide or compounds convertible to the oxide form or sulfuric acid, and calcining prior to contacting the treated support with a zerovalent chromium compound, thereby producing an active polymerization catalyst.

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