Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1997-02-07
1998-12-22
Bell, Mark L.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502117, 502124, 502128, 556 42, 556 43, 526134, 526172, B01J 3100, B01J 3700, C08F 402, C08F 460
Patent
active
058519459
ABSTRACT:
The invention addresses Group 5 metal compounds suitable as polymerization catalysts characterized by comprising one Group 15 element polyanionic ancillary ligand and three single or multidentate univalent ligands comprising Group 14-16 elements bound to the Group 5 metal, but excluding cyclopentadienyl ligands. The invention Group 5 metal compounds can be generically represented by the chemical symbols
where M is a Group 5 transition metal, preferably vanadium; J is a Group 15 heteroatom ligand covalently bound to M, preferably nitrogen; R is a substituted or unsubstituted aryl, hydrocarbyl or organometalloid group covalently bound to J; each R' is, independently, a uninegative ligand, e.g., substituted or unsubstituted aryl, substituted or unsubstituted linear or cyclic hydrocarbyl, silyl, hydride or substituted or unsubstituted organometalloid group; Q is a univalent single or multidentate ancillary ligand comprising at least one Group 14-16 element covalently bound to M; and, Z is an optional covalent bridging group linking R and Q, comprising at least one Group 14-16 element, n=1 when X is covalently linked to R and n=0 when Q is not covalently linked to R. Catalyst activation can be accomplished with standard metallocene catalyst activators. Olefin polymerization is exemplified.
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Murphy Vincent John
Turner Howard William
Bell Mark L.
Chi Anthony R.
Exxon Chemical Patents Inc.
Muller William G.
Pasterizyk J.
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