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:
Mar. 24, 2015
Filed:
Aug. 02, 2012
Tatsuya Irie, Ube, JP;
Kenji Isoyama, Ube, JP;
Tatsuo Miyazaki, Ube, JP;
Takashi Kashiwaba, Ube, JP;
Tsutomu Nanmyo, Ube, JP;
Tatsuya Irie, Ube, JP;
Kenji Isoyama, Ube, JP;
Tatsuo Miyazaki, Ube, JP;
Takashi Kashiwaba, Ube, JP;
Tsutomu Nanmyo, Ube, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
Disclosed is a method for producing a fluoroalkanesulfonic acid including (1) the step of reacting concentrated sulfuric acid and/or fuming sulfuric acid with a fluoroalkanesulfonate to cause an acid decomposition, thereby obtaining a reaction mixture containing the fluoroalkanesulfonic acid and a sulfur component; and (2) the step of adding an oxidizing agent to the reaction mixture obtained by the above step and then conducting a distillation, thereby obtaining the fluoroalkanesulfonic acid from the reaction mixture. It is possible by this method to efficiently reduce the sulfur component, thereby industrially advantageously obtaining fluoroalkanesulfonic acid of high purity.