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US 4,376,722 AGranted
Alkyltitanium and alkylchromium catalysts for olefin polymerization
AssigneeMobil Oil Corporation
InventorsArthur W. Chester, James G. Murray
Life of this patent
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Abstract
Zeolite supported, organometallic based catalyst composition are provided which are especially suitable for the polymerization of 1-olefins such as ethylene. Alkyltitanium and alkylchromium compounds such as tributylchromium and tetrabutyltitanium are reacted with ZSM-5 type zeolites to produce such novel catalysts.
Claims12
A catalyst composition especially suitable for promoting polymerization of 1-olefins, said composition comprising the reaction product of
- (A) 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;
- and
- (B) an organometallic compound of the formula:
- ##STR2## wherein M is a metal selected from titanium and chromium;
- R.sub.1 and R.sub.2 are each selected from H and methyl;
- R.sub.3 is H, alkyl, cyclohexyl, alkylcyclohexyl, cyclohexylalkyl, phenyl or alkylphenyl, benzyl and dimethylbenzyl;
- and
- x is 3 or 4.
5 more elements
Dependencies are inferred from the claim text.