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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.:

US 11566037 B1

PDFFull Text
Date of Patent:
Jan. 31, 2023

Filed:

Mar. 16, 2018

Process for producing isopropylidene bis(cyclopentadienyl)zirconium dichloride

Applicant:

Lanxess Organometallics Gmbh, Bergkamen, DE;

Inventors:

Angelika Preetz, Dortmund, DE;

Silvia Maus, Selm, DE;

Assignee:

LANXESS Organometallics GmbH, Bergkamen, DE;

Attorneys:

Nicanor A. Kohncke

Christopher L. McDavid

Ewa M. Wozniak

Primary Examiner:

Caixia Lu

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.

Find Patent Forward Citations

Preetz, Angelika. (2023). Process for producing isopropylidene bis(cyclopentadienyl)zirconium dichloride (U.S. Patent No. 11566037). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11566037

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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