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    METHOD FOR PURIFYING FLUORINATED COMPOUND
    35.
    发明公开
    METHOD FOR PURIFYING FLUORINATED COMPOUND 审中-公开

    公开(公告)号：EP3385249A1

    公开(公告)日：2018-10-10

    申请号：EP18171553.3

    申请日：2009-06-22

    申请人： AGC Inc.

    发明人： TAKAGI, Hirokazu ,  SEKI, Ryuji

    IPC分类号： C07C51/44 ,  C07C59/135 ,  C07C67/54 ,  C07C69/708 ,  C08F2/26 ,  C08F14/18 ,  C08F6/16 ,  C08F6/22 ,  C08L27/18 ,  C08F2/22

    CPC分类号： C08F6/16 ,  C07C51/44 ,  C07C67/54 ,  C08F2/26 ,  C08F6/22 ,  C08F14/18 ,  C07C59/135 ,  C07C69/708 ,  C08L27/18 ,  C08F2/22

    摘要： To provide a method for purifying a fluorinated carboxylic acid having an etheric oxygen atom and its derivative, with small decomposition and inclusion of impurities.
    A liquid containing at least one member selected from the group consisting of a fluorinated compound represented by the following formula (1) and a fluorinated compound represented by the following formula (2) is held at a heating temperature of at most 150°C and distilled:

             R F OR 1 COOH     (1)

             R F OR 1 COOR 2      (2)


    R F is a linear or branched monovalent fluoroorganic group which may have an etheric oxygen atom in its main chain, R 1 is a linear or branched bivalent organic group, and R 2 is a linear or branched monovalent organic group. Further, the liquid is a liquid obtained from any of a waste liquid after an aqueous emulsion of a fluoropolymer is coagulated and the fluoropolymer is separated, an aqueous liquid obtained by cleaning an exhaust gas in a step of drying and/or a step of heat treatment of the separated fluoropolymer, and a liquid obtained by cleaning an anion exchange resin which has been brought into contact with the waste liquid or an aqueous dispersion obtained from the aqueous emulsion of the fluoropolymer, with an alkaline aqueous solution.

    METHOD FOR SUPPRESSING CORROSION OF GLASS
    37.
    发明公开
    METHOD FOR SUPPRESSING CORROSION OF GLASS 审中-公开
    VERFAHREN ZURUNTERDRÜCKUNGDER KORROSION VON GLAS

    公开(公告)号：EP3100999A4

    公开(公告)日：2017-08-09

    申请号：EP15740874

    申请日：2015-01-23

    申请人： ASAHI GLASS CO LTD

    发明人： FUTAGAWA NORIFUMI

    IPC分类号： C07C51/47 ,  B01D15/00 ,  B01D15/02 ,  C03C15/00 ,  C03C23/00 ,  C07C51/50 ,  C07C53/21 ,  C07C59/135 ,  C09K15/02

    CPC分类号： C09K15/02 ,  B01D15/02 ,  C03C15/00 ,  C03C23/00

    摘要： To provide a method for suppressing corrosion of glass to be in contact with a liquid material containing fluoride ions or a condensate of gas vaporized therefrom, without adding an alkaline substance, and further without imposing restrictions on e.g. the temperature, the pH, the fluoride ion concentration and the water content. A method for suppressing corrosion of glass to be in contact with either one or both of a liquid material containing fluoride ions and a condensate of gas vaporized from the liquid material, wherein the liquid material contains a powder containing silicon dioxide, and the silicon dioxide is contained in a molar ratio of one or more times to the fluoride ions.

    摘要翻译： 本发明提供一种不添加碱性物质，抑制与含有氟离子的液体材料或气化了的气体的冷凝物接触的玻璃的腐蚀的方法。 温度，pH值，氟离子浓度和水含量。 1。一种抑制玻璃的腐蚀的方法，所述腐蚀与含有氟离子的液体材料和从液体材料蒸发的气体的冷凝物中的任一者或两者接触，其中液体材料含有含二氧化硅的粉末，并且二氧化硅是 以氟离子的摩尔比一次或多次包含。