US Patent 7985829 Method for producing polypyridinium

Patent 7985829 was granted and assigned to Japan Science and Technology Agency on July, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Japan Science and Technology Agency

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7985829

Date of Patent

July 26, 2011

Patent Application Number

10593176

Date Filed

March 23, 2005

Patent Primary Examiner

‌

Duc Truong

Patent abstract

A production method for polypyridinium having a narrow molecular weight distribution and a desired molecular weight is provided. Polypyridinium 3 having a narrow molecular weight distribution and a desired molecular weight is synthesized by allowing a pyridine derivative monomer 2 to polymerize on a polymerization initiator 1 such as a specially designed 4-halopyridinium and the like in the presence of a dissolution accelerating agent, such as tetrabutyl ammonium tetrafluoroborate, that dissolves the polymer formed in a solvent as in the chemical below.