Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-06-07
2005-06-07
Bell, Mark L. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S169000, C502S171000, C585S266000, C585S500000, C568S454000
Reexamination Certificate
active
06903042
ABSTRACT:
A catalytic composition for oligomerizing ethylene, in particular to 1-hexene, is obtained by mixing at least one chromium carboxylate characterized in that it also contains a free carboxylic acid in a set proportion, with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula M(RO)2-nXnin which RO is an aryloxy radical containing 6 to 80 carbon atoms, X is a halogen atom or a hydrocarbyl radical containing 1 to 30 carbon atoms and n is a whole number that can take the values 0 or 1, and with at least one hydrocarbylaluminum compound selected from the group formed by tris(hydrocarbyl)-aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
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Patent Abstract of Japan—vol. 011, No. 139 (C-420), May 7, 1987 & JP 61 275303 A (Mitsui Toatsu Chem Inc), Dec. 5, 1986.
Drochon Sebastien
Guibert Séverine
Saussine Lucien
Bell Mark L.
Brown Jennine
Institut Francais du Pe'trole
Millen White Zelano & Branigan P.C.
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