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:
Feb. 02, 2010
Filed:
Aug. 03, 2004
Edwin Ijpeij, Sittard, NL;
Henricus Arts, Munstergeleen, NL;
Gerardus Van Doremaele, Sittard, NL;
Felix Beijer, Sittard, NL;
Francis Van Der Burgt, Herten, NL;
Martin Alexander Zuideveld, Maastricht, NL;
Edwin Ijpeij, Sittard, NL;
Henricus Arts, Munstergeleen, NL;
Gerardus van Doremaele, Sittard, NL;
Felix Beijer, Sittard, NL;
Francis Van Der Burgt, Herten, NL;
Martin Alexander Zuideveld, Maastricht, NL;
DSM IP Assets B.V., Heerlen, NL;
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 at least 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 M(L)(L)(L)(L)X 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 L, L, L, and Lrepresent 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+l=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 polymerisation compatible base, which metal-organic compound is activated anywhere in, or before a polymerisation reactor.