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:
Mar. 20, 2007
Filed:
Oct. 22, 2003
Hans-robert-hellmuth Damrau, Constance, DE;
Patrik Müller, Frankfurt, DE;
Valerie Garcia, Compiègne, FR;
Christian Sidot, Compiègne, FR;
Christian Tellier, Compiègne, FR;
Jean-françois Lelong, Tracy-le-Mont, FR;
Hans-Robert-Hellmuth Damrau, Constance, DE;
Patrik Müller, Frankfurt, DE;
Valerie Garcia, Compiègne, FR;
Christian Sidot, Compiègne, FR;
Christian Tellier, Compiègne, FR;
Jean-François Lelong, Tracy-le-Mont, FR;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
The invention relates to a process for preparing racemic metallocene biphenoxide complexes by reacting bridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and heating the reaction mixture obtained in this way to a temperature in the range from −78 to 250° C., to the corresponding metallocene biphenoxide complexes and to their use as catalysts or as constituents of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.