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US 4,377,497 AGranted
Catalyst for olefin polymerization
AssigneeMobil Oil Corporation
InventorsArthur W. Chester, James G. Murray
Life of this patent
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Abstract
Zeolite supported, organochromium based catalyst compositions are provided which are especially suitable for the polymerization of 1-olefins such as ethylene. Pi-bonded organochromium [II] compounds such as chromocene (dicyclopentadienyl chromium) are reacted with ZSM-5 type zeolites to produce such novel catalysts.
Claims9
A catalyst composition especially suitable for promoting polymerization of 1-olefins, said composition comprising the reaction product of
- (A) a pi-bonded organochromium [II] compound;
- and
- (B) a crystalline aluminosilicate zeolite having a silica to alumina molar ratio of at least about 12 and a Constraint Index within the approximate range of about 1 to 12.
Dependencies are inferred from the claim text.