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:
Nov. 17, 2009
Filed:
Oct. 22, 2003
Hans-robert-hellmuth Damrau, Constance, DE;
Patrik Müller, Ludwigshafen, DE;
Valerie Garcia, Compiègne, FR;
Christian Sidot, Compiègne, FR;
Christian Tellier, Campiègne, FR;
Stéphanie Duchiron, Lyons, FR;
Jean-francois Lelong, Tracy-le-Mont, FR;
Hans-Robert-Hellmuth Damrau, Constance, DE;
Patrik Müller, Ludwigshafen, DE;
Valerie Garcia, Compiègne, FR;
Christian Sidot, Compiègne, FR;
Christian Tellier, Campiègne, FR;
Stéphanie Duchiron, Lyons, FR;
Jean-Francois Lelong, Tracy-le-Mont, FR;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
The invention relates to a process for preparing hydrogenated or partially hydrogenated, racemic ansa-metallocene complexes by reacting bridged or unbridged transition metal complexes with alkali metal compounds or alkaline earth metal compounds, heating the resulting reaction mixture to a temperature in the range from −78 to 250° C. and at least partially hydrogenating the reaction products in the presence of a suitable catalyst, to the corresponding hydrogenated or partially hydrogenated metallocenes and to their use as catalysts or as a constituent of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.