Titanium impregnated silica-chromium catalysts

Details Titanium impregnated silica-chromium catalysts Titanium impregnated silica-chromium catalysts

1981-05-29

1983-01-11

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252451, 252458, 526 98, 526100, 526352, C08F 402, C08F 424

Patent

active

043683037

ABSTRACT:
In accordance with one embodiment of this invention, a silica hydrogel is prepared and dried in the presence of a pore preserving agent after which a titanium compound is anhydrously incorporated therewith. In accordance with the second embodiment of this invention, a silica hydrogel or a silica xerogel is impregnated with an aqueous organic acid solution of a substituted or unsubstituted titanium acetylacetonate. The invention allows the use of conventional drying to produce a silica exhibiting characteristics associated with azeotrope dried titanium-silica for use as a support for chromium catalysts. The resulting catalysts are broadly applicable in the polymerization of olefins and are of particular utility in the slurry polymerization of olefins, particularly predominantly ethylene monomer.

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