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:
Jan. 31, 2023
Filed:
Mar. 16, 2018
Applicant:
Lanxess Organometallics Gmbh, Bergkamen, DE;
Inventors:
Angelika Preetz, Dortmund, DE;
Silvia Maus, Selm, DE;
Assignee:
LANXESS Organometallics GmbH, Bergkamen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07F 17/00 (2006.01); C08F 4/6592 (2006.01); C08F 10/00 (2006.01);
U.S. Cl.
CPC ...
C07F 17/00 (2013.01); C08F 4/65927 (2013.01); C08F 10/00 (2013.01);
Abstract
The present invention describes a process for preparing isopropylidene bis(cyclopentadienyl)zirconium dichloride comprising the steps of: (a) reacting acetone and cyclopentadiene in the presence of sodium methoxide or sodium ethoxide so as to form 2,2-dicyclopentadienylpropane; and (b) reacting said 2,2-dicyclopentadienylpropane with zirconium(IV) chloride in the presence of n-butyl lithium so as to form isopropylidene bis(cyclopentadienyl) zirconium dichloride.