Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1974-09-16
1976-08-10
Rutledge, L. Dewayne
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252467, B01J 2900
Patent
active
039741010
ABSTRACT:
A method for preparing silica-containing olefin polymerization catalysts, and the process performable therewith, the preparation involving adding an alkali metal silicate to an acid under defined conditions of addition to produce a hydrogel, recovering the gel in the substantially dry condition by employment of an oxygenated organic compound and impregnating the gel with a chromium compound.
REFERENCES:
patent: 2429319 (1947-10-01), Kearby
patent: 2978298 (1961-04-01), Wetzel
Lewis Michael L.
Phillips Petroleum Company
Rutledge L. Dewayne
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