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:
Jul. 14, 2015
Filed:
Mar. 15, 2013
Process for preparing alkali metal pyrithione and its polyvalent metal complexes from pyridine oxide
Applicant:
Arch Chemicals, Inc., Atlanta, GA (US);
Inventors:
Rahim Hani, Alpharetta, GA (US);
John J. Jardas, Rochester, NY (US);
Richard Dumas, East Haven, CT (US);
David Lei, Alpharetta, GA (US);
Assignee:
Arch Chemicals, Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/04 (2006.01); C07D 213/89 (2006.01); C07D 213/70 (2006.01);
U.S. Cl.
CPC ...
C07D 213/70 (2013.01); C07D 213/89 (2013.01);
Abstract
The present invention generally relates to a novel process for preparing alkali metal pyrithione from pyridine N-oxide, using a sulfurination agent and a base agent. In particular, the present invention relates to an efficient process for preparing polyvalent metal complexes of sodium pyrithione from the alkali metal pyridine N-oxide described herein.