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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 10858337 B1

PDFFull Text
Date of Patent:
Dec. 08, 2020

Filed:

Oct. 13, 2017

Method for preparing 1,1'-ethylene-2,2′-bipyridinium dichloride

Applicant:

Nanjing Redsun Biochemistry Co., Ltd., Jiangsu, CN;

Inventors:

Ruikuan Yue, Nanjing, CN;

Yi Xue, Nanjing, CN;

Honglong Chen, Nanjing, CN;

Wenkui Wang, Nanjing, CN;

Chaoran Luo, Nanjing, CN;

Xinchun Chen, Nanjing, CN;

Dianhai Zhou, Nanjing, CN;

Jianhua Jiang, Nanjing, CN;

Fujun Wang, Nanjing, CN;

Assignee:

NANJING REDSUN BIOCHEMISTRY CO., LTD., Nanjing, CN;

Attorney:

Oliff PLC

Primary Examiner:

Timothy R Rozof

Int. Cl.
CPC ...
C07D 401/04 (2006.01);
U.S. Cl.
CPC ...
C07D 401/04 (2013.01);
Abstract

A method for preparing 1,1'-ethylene-2,2′-bipyridinium dichloride includes mixing an aqueous diquat dibromide solution with hydrochloric acid, adding dropwise to a mixture of an organic solvent, a bromine absorbent, and an oxidant, and reacting to produce 1,1′-ethylene-2,2′-bipyridinium dichloride.

Find Patent Forward Citations

Yue, Ruikuan. (2020). Method for preparing 1,1'-ethylene-2,2′-bipyridinium dichloride (U.S. Patent No. 10858337). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10858337

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