Daikin Industries, Ltd.

Atsushi Maruo

Shinichi Kinoshita

Hideo Sakata

Kazuhiro Takahashi

Shigeaki Yamazaki

Yuusuke Etou

Katsuya Nakai

Yosuke Kishikawa

Akiyoshi Yamauchi

Hiroyuki Arima

Tsuneo Yamashita

Tatsuya Ohtsuka

Masatoshi Nose

Yuuki Suzuki

Yoshihiro Yamamoto

Kotaro Hayashi

A method for producing lithium fluorosulfonate which includes reacting XSOH, wherein X is a leaving group other than fluorine, with a lithium source and a fluorine source. Also disclosed is a composition containing XSOH.

Lithium fluorosulfonate production method

The present invention provides a novel electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution of the present invention contains a solvent, an electrolyte salt, and at least one selected from the group consisting of compounds represented by RX&#x2014;SOMand compounds represented by RRN&#x2014;SOMin an amount of 0.001 to 10 mass % relative to the solvent.

Electrolyte solution and method for producing sulfate salt

According to a method for producing a perfluoroalkadiene compound represented by general formula (1): CF&#x2550;CF&#x2014;(CF)&#x2014;CF&#x2550;CF(1), wherein n is an integer of 4 or more, the method comprising a reaction step of adding a nitrogen-containing compound to a solution of a compound represented by general formula (2): XCF&#x2014;CFX&#x2014;(CF)&#x2014;CF&#x2014;CFX(2), wherein n is the same as above, Xis the same or different and is a halogen atom other than fluorine, and Xis a halogen atom, the perfluoroalkadiene compound can be obtained at a high yield.

Method for producing perfluoroalkadiene compounds

According to a method for producing a perfluoroalkadiene compound represented by general formula (1): CF&#x2550;CF&#x2014;(CF)&#x2014;CF&#x2550;CF(1), wherein n is an integer of 4 or more, the method comprising a reaction step of adding a nitrogen-containing compound to a solution of a compound represented by general formula (2): XCF&#x2014;CFX&#x2014;(CF)&#x2014;CFX(2), wherein n is the same as above, Xis the same or different and is a halogen atom other than fluorine, and Xis a halogen atom, the perfluoroalkadiene compound can be obtained at a high yield.

A method for manufacturing a phosphate, which includes reacting, in a solvent, an organophosphate represented by the following formula (2) and an alkali metal hydroxide in an amount of 1.01 mole equivalents or more relative to the organophosphate to provide a composition containing a phosphate represented by the following formula (1), the alkali metal hydroxide, and the solvent; and adding hydrogen fluoride to the composition to neutralize the composition and to precipitate an alkali metal fluoride, thereby providing a composition containing the precipitated alkali metal fluoride, the phosphate represented by the formula (1), and the solvent. The formula (1) is (RO)(RO)POM, where R, Rand M are as defined herein. The formula (2) is (RO)(RO)(RO)PO, where R, R, and Rare as defined herein.

Liquid electrolyte, and method for manufacturing phosphate

An electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution contains a solvent, an electrolyte salt, and a phosphate in an amount of 0.001 to 15 mass % relative to the solvent and represented by the formula (1): (RO)(RO)POM, where R, Rand M are as defined herein.

An electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution contains a solvent, an electrolyte salt, and at least one selected from the group consisting of compounds represented by RX&#x2014;SOMand compounds represented by RRN&#x2014;SOMin an amount of 0.001 to 10 mass % relative to the solvent.

The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1): CFClCHClCHCl, wherein n is 1 or 2, and chlorine-containing fluoropropene compounds represented by Formula (2): CFClCCl&#x2550;CH, wherein n is 1 or 2, wherein the process includes the step of contacting at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene, and 2,3,3,3-tetrachloropropene with hydrogen fluoride in the absence of a catalyst while heating. According to the present invention, the chlorine-containing propane and propene compounds having 1 or 2 fluorine atoms can be prepared by an industrially applicable, simple and effective process.

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Osaka, Japan

Atsushi Maruo