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US 10,150,108 B2Granted
Catalytic composition and process for oligomerizing ethylene into 1-hexene
AssigneeIfp Energies Nouvelles
InventorsLionel Magna, Sebastien Drochon, Helene Olivier-Bourbigou
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Abstract
A composition is described which comprises at least one chromium compound, 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-nXn]y, in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms, X is a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms, n is a whole number which may take the values 0 or 1 and y is a whole number in the range 1 to 10, and at least one additive selected from ether type compounds, which may or may not be cyclic, introduced in a near-stoichiometric quantity with respect to the element M.
Claims7
A process for the preparation of a kit comprising
- a) at least one chromium compound and
- b) an intermediate composition comprising:
- at least one aryloxy compound of an element M selected from the group consisting of magnesium, calcium, strontium and barium, with general formula [M(RO)2-nXn]y, in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms, X is a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms, n is a whole number which may take the integer values 0 or 1 and y is a whole number in the range 1 to 10;
- at least one additive selected from ether compounds, wherein the additive is diethyl ether, dibutyl ether, diisopropylether, 2-methoxy-2-methylpropane, 2-methoxy-2-methylbutane, 2,5-dihydrofuran, tetrahydrofuran, 2-methoxytetrahydrofuran, 2-methyltetrahydrofuran, 3-methyltetrahydrofuran, 2,3-dihydropyran, tetrahydropyran, 1,3-dioxolane, 1,3-dioxane, 1,4-dioxane, dimethoxyethane, di(2-methoxyethyl)ether or benzofuran, or a mixture thereof, and wherein the molar ratio between the additive and the element M is in the range of 1 to 60, comprising;
- a) mixing:
- at least one compound MX2 of an element M selected from the group consisting of magnesium, calcium, strontium and barium, X being a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms;
- at least one derivative ROH in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms;
- and at least one additive selected from ether compounds, which may or may not be cyclic, introduced in a near-stoichiometric quantity with respect to the element M to form an intermediate composition, and
- b) pairing said intermediate composition with at least one chromium compound.
6 more elements
A process for preparing a composition comprising mixing:
- at least one chromium compound;
- at least one compound MX2 of an element M selected from the group consisting of magnesium, calcium, strontium and barium, X being a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms;
- at least one derivative ROH in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms;
- and
- at least one additive selected from ether compounds, which may or may not be cyclic, introduced in a near-stoichiometric quantity with respect to the element M;
- optionally, at least one aluminium compound selected from the group consisting of tris(hydrocarbyl)aluminium compounds, chlorine- or bromine-containing hydrocarbylaluminium compounds with general formula AIR′m,Y3-m, in which R′ is a hydrocarbyl radical containing 1 to 6 carbon atoms, Y is a chlorine or bromine atom and m is a number from 1 to 3, and aluminoxanes, used alone or as a mixture;
- optionally, at least one solvent.
4 more elements
An ethylene trimerization process carried out discontinuously in accordance with the following steps:
- introducing
- at least one chromium compound;
- at least one compound MX2 of an element M selected from the group consisting of magnesium, calcium, strontium and barium, X being a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms;
- at least one derivative ROH in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms;
- and
- at least one additive selected from ether compounds, which may or may not be cyclic, introduced in a near-stoichiometric quantity with respect to the element Minto a reactor;
- introducing ethylene at a desired pressure;
- adjusting the temperature to a desired value;
- and adding at least one aluminium compound selected from the group consisting of tris(hydrocarbyl)aluminium compounds, chlorine- or bromine-containing hydrocarbylaluminium compounds with general formula AlR′m,Y3-m, in which R′ is a hydrocarbyl radical containing 1 to 6 carbon atoms, Y is a chlorine or bromine atom and m is a number from 1 to 3, and aluminoxanes, used alone or as a mixture.
6 more elements
An ethylene trimerization process carried out continuously by simultaneously and separately injecting at least one chromium compound;
- at least one compound MX2 of an element M selected from the group consisting of magnesium, calcium, strontium and barium, X being a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms;
- at least one derivative ROH in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms;
- at least one additive selected from ether compounds, which may or may not be cyclic, introduced in a near-stoichiometric quantity with respect to the element M;
- at least one aluminium compound selected from the group consisting of tris(hydrocarbyl)aluminium, chlorine- or bromine-containing hydrocarbylaluminium compounds having general formula AlR′mY3-m in which R′ is a hydrocarbyl radical containing 1 to 6 carbon atoms, Y is a chlorine or bromine atom and m is a number from 1 to 3, and aluminoxanes, used alone or as a mixture;
- and
- ethylene into a reactor, the whole system being maintained at a desired temperature and pressure.
3 more elements
Dependencies are inferred from the claim text.