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. 13, 1976
Filed:
Dec. 06, 1974
Applicant:
Inventors:
Assignee:
Seitetsu Kagaku Co., Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
2041 / ;
Abstract
Pyridine is reacted with chlorine in the presence of water by photolytic reaction under irradiation of photolytic light, using halogenated hydrocarbon such as carbon tetrachloride as a diluent. When the amount of water added exceeds at least 0.01 moles per one mole of pyridine, an effect of water addition appears, but usually addition of 0.2 to 10 moles, preferably 0.5 to 5 moles of water per one mole of pyridine makes the reaction proceed smoothly without any trouble, and ensures increase in yield and selectivity of 2-chloropyridine. The present process can be carried out in either gaseous or liquid phase.