Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1991-07-12
1992-04-14
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502102, 502154, 502155, 526 96, C08F 464
Patent
active
051048396
ABSTRACT:
Olefinic polymer exhibiting high environmental stress crack resistance are produced by contacting the olefin charge stock in a single reactor with a compatible mix of two transition metal catalyst systems. One component of the catalyst system comprises chromium oxide supported on an aluminophosphate material. Hydrogen can be used as adjuvant for the hexavalent chromium component of the catalyst mixture. The second catalyst component consists essentially of a beta-stabilized tetrahydrocarbyl zirconium compound supported on inorganic support material. The catalysts can be premixed before use in the reactor, or can be added to the reactor separately. A suitable cocatalyst can be utilized.
REFERENCES:
patent: 4056669 (1977-11-01), Ballard et al.
patent: 4285834 (1981-08-01), Lowery, Jr. et al.
patent: 4397765 (1983-08-01), McDaniel
McDaniel Max P.
Smith Paul D.
Garvin Patrick P.
Peebles Brent M.
Phillips Petroleum Company
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