Chromium compounds and uses thereof
AssigneePhillips Petroleum Company
InventorsWilliam K. Reagen, Brian K. Conroy
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Abstract
Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or chromium pyrrolide, compounds can be used either unsupported or supported on an inorganic oxide support to trimerize and/or polymerize olefins.
Claims36
A composition comprising Cr.sub.5 (C.sub.4 H.sub.4 N).sub.10 (C.sub.4 H.sub.8 O).sub.4.
A composition comprising [Cr(C.sub.4 H.sub.4 N).sub.4 ].
A composition comprising [Cr(C.sub.4 H.sub.4 N).sub.4 ][Na].sub.2.2(OC.sub.4 H.sub.8).
A composition comprising [Cr(C.sub.4 H.sub.4 N).sub.5 (OC.sub.4 H.sub.8)].
A composition comprising [Cr(C.sub.4 H.sub.4 N).sub.5 (OC.sub.4 H.sub.8)][Na].sub.2.4(OC.sub.4 H.sub.8).
A process to prepare a chromium-containing compound comprising forming a mixture of and refluxing:
- (a) a chromium salt;
- (b) a metal amide;
- and
- (c) an electron pair donor solvent
A process to prepare one or more chromium-containing compound comprising forming a mixture of and refluxing:
- (a) about one mole of chromous chloride;
- (b) about two moles of sodium pyrrole;
- and
- (c) tetrahydrofuran
A process to prepare one or more chromium-containing compounds comprising forming a mixture of and refluxing:
- (a) about one mole of chromous chloride;
- (b) an excess of sodium pyrrole;
- and
- (c) an excess of tetrahydrofuran.
A process to prepare one or more chromium-containing compounds comprising forming a reaction mixture of and refluxing:
- (a) about one mole of chromic chloride;
- (b) about three moles of sodium pyrrole;
- and
- (c) an excess of dimethoxyethane.
A process to prepare one or more chromium-containing compounds comprising forming a mixture of:
- (a) about one mole of chromous chloride;
- (b) an excess of dimethyl pyrrole;
- and
- (c) an excess of tetrahydrofuran.
A composition comprising Cr(NC.sub.4 H.sub.4).sub.3 Cl(O.sub.2 C.sub.2 H.sub.4 (CH.sub.3).sub.2).
A composition comprising Cr(NC.sub.4 H.sub.4).sub.3 Cl(O.sub.2 C.sub.2 H.sub.4 (CH.sub.3).sub.2).sub.3 Na.
Dependencies are inferred from the claim text.