Large pore volume olefin polymerization catalysts

Details Large pore volume olefin polymerization catalysts Large pore volume olefin polymerization catalysts

1980-02-06

1981-11-10

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252458, 423338, 526106, B01J 2108, B01J 2326

Patent

active

042997313

ABSTRACT:
Large pore volume (.gtoreq.1.4 cc/g) silica is obtained by slowly drying an acidic (pH.ltoreq.3.5) silica hydrogel. The gel is useful in connection with chromium as an ethylene polymerization catalyst.

REFERENCES:
patent: 3243262 (1966-03-01), Carr et al.
patent: 3363979 (1968-01-01), Schwartz et al.
patent: 3526603 (1970-09-01), Acker
patent: 4042770 (1977-08-01), Bachl et al.
patent: 4151122 (1979-04-01), McDaniel et al.

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