Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2007-08-21
2007-08-21
Lu, Caixia (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S103000, C502S113000, C502S117000, C502S167000, C585S510000, C585S513000
Reexamination Certificate
active
11398777
ABSTRACT:
A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I);in-line-formulae description="In-line Formulae" end="lead"?(R1)(R2)P—X—P(R3)(R4) (I)in-line-formulae description="In-line Formulae" end="tail"?wherein X is a bivalent organic bridging group; R1and R3are independently selected from, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups, with the proviso that when R1and R3are aromatic groups they do not contain a polar substituent at any of the ortho-positions; R2and R4are independently selected from optionally substituted aromatic groups, each R2and R4bearing a polar substituent on at least one of the ortho-positions; and c) a second ligand having the general formula (II);in-line-formulae description="In-line Formulae" end="lead"?(R1′)(R2′)P—X′—P(R3′)(R4′) (II)in-line-formulae description="In-line Formulae" end="tail"?wherein X′ is a bridging group of the formula —N(R5′)—, wherein R5′is selected from hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, a heterohydrocarbyl group, a substituted heterohydrocarbyl group, a silyl group or derivative thereof; and R1′, R2′, R3′and R4′are independently selected from hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups of which at least one of R1′, R2′, R3′and R4′is substituted with a polar substituent, or R1′, R2′, R3′and R4′are independently selected from hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl groups, wherein any substituents on one or more of R1′, R2′, R3′and R4′are non-polar. The present invention also relates to a catalyst system comprising the catalyst precursor composition of the present invention and a cocatalyst.
REFERENCES:
patent: 5198563 (1993-03-01), Reagen et al.
patent: 5523507 (1996-06-01), Reagen et al.
patent: 5968866 (1999-10-01), Wu
patent: 6800702 (2004-10-01), Wass
patent: 2003/0166456 (2003-09-01), Wass
patent: 2005/0113622 (2005-05-01), Drent et al.
patent: 2002/04119 (2004-07-01), None
patent: 2004/056478 (2004-07-01), None
patent: 2004/056479 (2004-07-01), None
patent: 2004/056480 (2004-07-01), None
patent: WO 2004/056479 (2004-07-01), None
patent: 2005/039758 (2005-05-01), None
patent: WO2005123633 (2005-12-01), None
Chem. Commun., 2002, 8, “High activity ethylene trimerisation catalyst based on diphosphine ligands” pp. 858-859.
Burgess et al., Stereochemically Matched (and Mismatched) Bisphosphine Ligands: DIP-DIRAMP Hybrids Organometallics, vol. 11, 1992, pp. 3588-3600, p. 3591 Figure 3, compounds 6, 7, 9.
De Boer Eric Johannes Maria
On Quoc An
Smit Johan Paul
Van Der Heijden Harry
Van Zon Arie
Haas Donald F.
Lu Caixia
Shell Oil Company
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