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:
Jun. 23, 1998
Filed:
Dec. 18, 1996
Applicant:
Inventors:
Wilhelm Kaufmann, Rodermark, DE;
Thomas Wisser, Limburg, DE;
Johann Streb, Frankfurt, DE;
Thomas Rink, Bad Soden, DE;
Roland Zenk, Bad Soden, DE;
Michael Riedel, Essen, DE;
Ivan Cabrera, Dreieich, DE;
Assignee:
Targor GmbH, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ;
U.S. Cl.
CPC ...
556 11 ; 556 12 ; 556 43 ; 556 47 ; 556 53 ; 526160 ; 526943 ; 502103 ;
Abstract
The present invention relates to a process for reducing the concentration of organometallic and/or inorganic by-products in product mixtures formed in the synthesis of metallocenes, which comprises treating a mixture comprising one or more metallocenes and one or more organometallic and/or inorganic by-products with a polar extractant.