Catalytic composition and process for oligomerising ethylene in particular to 1-butene and/or 1-hexene
AssigneeInstitut Francais du Petrole
InventorsDominique Commereuc, Sebastien Drochon, Lucien Saussine
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Abstract
A catalyst composition for a process of oligomerising ethylene to produce 1-butene and/or 1-hexene wherein the catalytic composition is obtained by mixing at least one chromium compound with at least one aryloxy aluminum compound with general formula R.sub.n Al(R'O).sub.3-n where R is a linear or branched hydrocarbyl radical containing 1 to 30 carbon atoms, R'O is an aryloxy radical containing 6 to 80 carbon atoms and n is a whole number which can take the values 0, 1 or 2, and with at least one other hydrocarbyl aluminum compound selected from tris(hydrocarbyl)aluminum compounds or chlorinated or brominated hydrocarbyl aluminum compounds.
Claims27
A catalytic composition obtained by mixing:
- at least one chromium compound;
- with at least one aryloxy aluminum compound with general formula R.sub.n Al(R'O).sub.3-n in which n is a whole number which can take the values 0, 1 or 2, R is a linear or branched hydrocarbyl radical containing 1 to 30 carbon atoms, and R'O is an aryloxy radical containing 6 to 80 carbon atoms;
- and with at least one hydrocarbyl aluminum compound with general formula AlR".sub.m X.sub.3-m where R" is a hydrocarbyl radical containing 1 to 6 carbon atoms, X is a chlorine or bromine atom and m is a number from 1 to 3, said at least one chromium compound and said at least one aryloxy aluminum compound and said at least one hydrocarbyl aluminum compound being present in such proportions as to provide catalytic activity to the catalytic composition.
Dependencies are inferred from the claim text.