The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2004
Filed:
Nov. 15, 2002
Vernon Charles Gibson, London, GB;
Olivier Hoarau, Saclay, FR;
Brian Stephen Kimberley, Bouche du Rhone, FR;
Peter James Maddox, Middlesex, GB;
BP Chemicals Limited, London, GB;
Abstract
A complex suitable for use as a catalyst in the polymerisation of olefins is disclosed, having the Formula (I) wherein M is a transition metal; X represents an atom or group covalently or ionically bonded to M; T is the oxidation state of M; b is the valency of the atom or group X; A to A are each independently N or P or CR, with the proviso that at least one but no more than two of them are independently CR; Y and Y are each independently CR′ or PR′R″; Z is oxygen or NR , R and R and each R, each R′ and each R″ are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, substituted heterohydrocarbyl or SiR where each R is independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl; but excluding those complexes having the formulae (1) and (2) where in both cases R and R are Me, R and R are 2, 4, 6-trimethylphenyl, M is Fe, T is II, X is Cl and b is 1