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:
Dec. 05, 2000
Filed:
Dec. 28, 1999
Applicant:
Inventors:
Kaoru Mori, Saitama, JP;
Takanori Hamana, Yamaguchi, JP;
Shigenori Sakai, Yamaguchi, JP;
Tadayuki Kawashima, Saitama, JP;
Assignee:
Central Glass Company, Limited, Ube, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562829 ; 562834 ;
Abstract
The present invention provides a method for producing trifluoromethanesulfonyl chloride. This method includes the step of reacting trifluoromethanesulfonic acid with phosphorous trichloride and chlorine. With this method, trifluoromethanesulfonyl chloride can be easily and highly selectively produced at high yield. The reaction may be carried out at about atmospheric pressure. Furthermore, the reaction may be carried out in the presence of phosphorus oxychloride either under a pressurized condition or at about atmospheric pressure.