Process for the preparation of an metal-organic compound comprising at least one imine ligand

US7674867B2 · kind B2 · utility

Assignee

• DSM IP ASSETS B.V. · NL

Inventors

• Edwin Ijpeij · Sittard, NL
• Henricus Arts · Munstergeleen, NL
• Gerardus van Doremaele · Sittard, NL
• Felix Beijer · Eindhoven, NL
• Francis Van der Burgt · Herten, NL
• Martin Alexander Zuideveld · Kelmis, BE

Key dates

• Filing date: Aug 3, 2004
• Grant date: Mar 9, 2010
• Expiry date: Aug 7, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2420/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of a metal-organic compound, comprising at least one phosphinimine ligand, characterized in that the HA adduct of a phosphinimine ligand according to formula (1) is contacted with a metal-organic reagent of formula (2) in the presence of 1, respectively 2 equivalents of a base, wherein HA represents an acid, of which H represents its proton and A its conjugate base, with Y═N—H as formula (1), and Mv(L1)k(L2)l(L3)m(L4)nX as formula (2), and wherein Y is a substituted phosphorous atom, and M represents a group 4 or group 5 metal ion, V represents the valency of the metal ion, being 3, 4 or 5 L1, L2, L3, and L4 represent a ligand or a group 17 halogen atom on M and may be equal or different, k, l, m, n=0, 1, 2, 3, 4 with k+l+m+n+1=V, and X represents a group 17 halogen atom. The invention further relates to a process for the preparation of a polyolefin by making a metal-organic compound according to the process of the invention, wherein the base is an olefin polymerization compatible base, which metal-organic compound is activated anywhere in, or before a polymerization reactor.