US Patent 7829642 Polymerization catalyst composition for polymerization of isoprene compound

Patent 7829642 was granted and assigned to Riken on November, 2010 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Riken

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

78296420

Patent Inventor Names

Zhaomin Hou0

Lixin Zhang0

Date of Patent

November 9, 2010

Patent Application Number

122821480

Date Filed

February 5, 2007

Patent Primary Examiner

‌

Rip A Lee

Patent abstract

3,4-isoprene-based polymer having high isotacticity can be produced by polymerizing an isoprene compound using a complex represented by the general formula (A) and a catalyst activator:

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