Polymerization catalyst

Details Polymerization catalyst Polymerization catalyst

1975-03-13

1976-12-07

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252428, 252429C, 252431R, 252431N, B01J 3102

Patent

active

039961630

ABSTRACT:
Process for making a catalyst precursor by heating an inorganic oxide support with a titanium compound at a temperature in the range 150.degree. to 1200.degree. C and then retreating with titanium one or more times by alternately adding a hydroxyl compound (e.g. water) and titanium compound and heating at 150.degree. to 1200.degree. C. The precursor can be used to make a useful ethylene polymerization catalyst by adding a chromium compound and heat activating at a temperature in the range 100.degree. to 1200.degree. C.

REFERENCES:
patent: 3816340 (1974-06-01), Morris et al.
patent: 3817931 (1974-06-01), Brooks et al.
patent: 3879362 (1975-04-01), Chalfont et al.

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