697-18-7Relevant academic research and scientific papers
Reaction system for preparing tetrafluoroethane-β-sultone and preparation method using the same
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Paragraph 0123-0127; 0141, (2017/12/27)
The present invention relates to a reaction system for preparing tetrafluoroethane-andbeta;-sultone and to a preparation method using the same. By using the reaction system for preparing tetrafluoroethane-andbeta;-sultone and the preparation method using the same, tetrafluoroethane-andbeta;-sultone can be prepared safely and easily at a high yield and a high purity at normal temperature and normal pressure, rapid heat generation can be avoided and the risk of explosion in processes due to pressurization is reduced, so that the reaction system and the preparation method are usefully used to prepare energy-related materials such as fuel cell electrolytes and the like derived from tetrafluoroethane-andbeta;-sultone, and in particular, are usefully used to prepare fluorine-based ionomers.COPYRIGHT KIPO 2017
A method for manufacturing a solid ammonium salt compd.
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Paragraph 0094-0096, (2016/12/07)
PROBLEM TO BE SOLVED: To produce an ammonium salt compound which is useful as an intermediate of an acid generator and is in solid state. SOLUTION: There is provided a method for producing a compound in solid state represented by formula (I), including: bringing one or more solvents which cause phase separation from water into contact with a compound in liquid state represented by formula (I), wherein Q1and Q2each independently represents a fluorine atom or a 1C-6C perfluoroalkyl group, R represents an organic group, and Z1to Z3each independently represents a hydrogen atom or a 1C-12C aliphatic hydrocarbon group, etc. COPYRIGHT: (C)2011,JPOandINPIT
Improvement of procedures for preparing Tetrafluoroethane-β-sultone and fluorocarbonyldifluoromethanesulfonyl fluoride
Barabanov,Bispen,Kornilov,Moldavskii,Odinokov,Fenichev
, p. 619 - 623 (2014/11/27)
Synthesis of tetrafluoroethane-β-sultone by the reaction of tetrafluoroethylene with sulfuric anhydride and of fluorocarbonyldifluoromethanesulfonyl fluoride by catalytic reaction of tetrafluoroethylene with sulfuric anhydride using BAU-2, SKT-6, or AG-3 activated carbon as catalyst was studied. The possibility of replacing sulfuric anhydride prepared by distillation from oleum by sulfuric anhydride prepared by sulfur dioxide oxidation was demonstrated.
PROCESS FOR THE PRODUCTION OF WATER-SOLUBLE FLUORINE -CONTAINING VINYL ETHERS
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Page/Page column 7, (2008/06/13)
The present invention relates to a method for producing a water-soluble fluorine-containing vinyl ether which comprises subjecting a fluorine-containing 2-alkoxypropionic acid derivative represented by the following general formula (I): (wherein A represents -OM1 or -OM21/2, and M1 represents an alkali metal and M2 represents an alkaline earth metal; X represents a halogen atom; Y1 and Y2 are the same or different and each represents a fluorine atom, a chlorine atom, a perfluoroalkyl group or a fluorochloroalkyl group; n represents an integer of 0 to 3, and n of Y1s may be the same or different; m represents an integer of 1 to 5, and m of Y2s are the same or different; and Z represents a hydrophilic group) to thermal decomposition at a temperature of not lower than 50°C but lower than 170°C in the presence of a coordinating organic solvent to give a water-soluble fluorine-containing vinyl ether represented by the general formula (II): (wherein Y1, Y2, Z, n and m are as defined above),???said coordinating organic solvent having a coordinating property with an ion of said M1 or an ion of said M2???said coordinating organic solvent being in an amount of 10 to 1,000 parts by mass per 100 parts by mass of the fluorine-containing 2-alkoxypropionic acid derivative.
Synthesis, characterization, and ion-conductive behavior in an organic solvent and in a polyether of a novel lithium salt of a perfluorinated polyimide anion
Tokuda, Hiroyuki,Muto, Shunsuke,Hoshi, Nobuto,Minakata, Takashi,Ikeda, Masanori,Yamamoto, Fumihiko,Watanabe, Masayoshi
, p. 1403 - 1411 (2007/10/03)
To achieve highly conductive polymer electrolytes with a controllable ionic transference number, a novel polymeric lithium salt was synthesized and characterized. The novel lithium salt of a perfluorinated polyimide anion, poly(5-oxo-3-oxy-4-trifluoromethyl-1,2,4-pentafluoropentylene sulfonylimide lithium) (LiPPI), has a polyanionic backbone with a repeating unit resembling highly dissociable, thermally and electrochemically stable imide salts, such as lithium bis(trifluoromethylsulfonyl)imide (LiTFSI). The ion-conductive behavior of LiPPI in an organic solvent and in a polyether was extensively studied by using pulse-gradient spin-echo NMR, in addition to differential scanning calorimetry, complex impedance measurement, and dynamic mechanical analysis. Solutions of LiPPI in ethylene carbonate (EC) exhibited a high degree of dissociation and high ionic conductivity, and the self-diffusion coefficient of the anion was lower than that of the cation. Solvent-free polymer electrolytes were prepared by dissolving LiPPI in a matrix polyether to afford a compatible polymer alloy, and the ionic conductivity of the new polymer alloy electrolytes reached ca. 10-5S cm-1 at 30°C. Although the lithium ionic transference number in the organic electrolyte solution was approximately the same as that of LiTFSI in EC, the polymer alloy electrolyte gave an apparent transference number higher than 0.7, which was considerably higher than that of LiTFSI in the same polyether.
Monomeric sulfur trioxide - generation, handling and reactions with fluoroolefins
Behr, Fred E.,Terjeson, Robin J.,Mohtasham, Javid,Gard
, p. 137 - 139 (2007/10/03)
Sulfur trioxide (SO3) is one of the most widely used chemicals in the world. Several convenient procedures for the generation and handling of monomeric SO3 will be discussed here. Also, the reaction of monomeric SO3 with CF2=CF2 and CF2=CFH will be described.
