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:
Apr. 17, 2018
Filed:
Jul. 08, 2015
Kanto Denka Kogyo Co., Ltd., Tokyo, JP;
KANTO DENKA KOGYO CO., LTD., Tokyo, JP;
Abstract
The purpose of the present invention is to provide a method for easily producing a difluorophosphate using only low-cost starting materials without requiring cumbersome operations. According to the present invention, at least one salt selected from the group consisting of halides, carbonates, borates, phosphates, hydroxides and oxides of an alkali metal, an alkaline earth metal or an onium, at least one phosphorus compound selected from the group consisting of oxychlorides and chlorides of phosphorus, water and hydrogen fluoride are reacted. The above-mentioned purpose is achieved preferably using, as hydrogen fluoride, one substance selected from the group consisting of hydrogen fluoride anhydride, a mixed solution of hydrogen fluoride anhydride and an organic solvent and a mixed gas of hydrogen fluoride anhydride and an inert gas, as a salt used in the reaction, at least one substance selected from the group consisting of halides and carbonates of an alkali metal, and as a phosphorus compound, phosphoryl chloride.