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:
Jul. 17, 2001
Filed:
Mar. 20, 2000
Applicant:
Inventors:
Heike Gregorius, Bad Kreuznach, DE;
Carsten Süling, Frankenthal, DE;
Wolfgang Bidell, Mutterstadt, DE;
Hans-Herbert Brintzinger, Taegerswilen, DE;
Hans-Robert-Hellmuth Damrau, Konstanz, DE;
Armin Weber, Markdorf, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/700 ; B01J 3/100 ; C08F 4/64 ;
U.S. Cl.
CPC ...
C07F 1/700 ; B01J 3/100 ; C08F 4/64 ;
Abstract
Racemic metallocene complexes are prepared by reacting bridged or unbridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and, if desired, subsequently replacing the aromatic ligands.