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    FLUORORESIN COMPOSITION AND COVERED ELECTRIC WIRE
    2.
    发明公开
    FLUORORESIN COMPOSITION AND COVERED ELECTRIC WIRE 有权
    FLUOR树脂组合物和绝缘电线

    公开(公告)号：EP2185648A4

    公开(公告)日：2011-07-06

    申请号：EP08836413

    申请日：2008-09-24

    申请人： DAIKIN IND LTD

    发明人： SHIOTSUKI KEIZO ,  KONO HIDEKI ,  ISHII KENJI ,  ITO KENGO ,  TANIMOTO KENJIRO ,  KITAHARA TAKAHIRO

    IPC分类号： C08L27/18 ,  C08F8/20 ,  C08F214/26 ,  C08J3/20 ,  H01B3/44 ,  H01B7/02

    CPC分类号： C08J3/12 ,  C08F8/22 ,  C08J3/16 ,  C08J3/226 ,  C08J2327/18 ,  C08J2427/00 ,  C08L27/18 ,  C08L2205/02 ,  H01B3/445 ,  C08L2666/04

    摘要： It is an object of the present invention to provide a fluororesin composition which hardly causes molding defects even when high-speed molding is performed in covering extrusion molding within a relatively broad molding temperature range and which can give covered electric wires, in particular foamed electric wires, excellent in surface smoothness. A fluororesin composition comprising a polytetrafluoroethylene [PTFE] having a standard specific gravity of 2.15 to 2.30 and a tetrafluoroethylene/hexafluoropropylene-based copolymer [FEP], the content of said PTFE being 0.01 to 3 parts by mass per 100 parts by mass of said FEP and the alkali metal content being not higher than 5 ppm on the resin composition solid matter basis, wherein said composition is obtained by a method comprising the step (1) of obtaining a cocoagulated fluororesin powder by mixing an aqueous dispersion containing said FEP and an aqueous dispersion containing said PTFE together, followed by coagulation, the step (2) of melt extruding the cocoagulated powder and the step (3) of subjecting the extrusion product to treatment for stabilizing unstable terminal groups in said PTFE and FEP.

    PROCESS FOR PRODUCTION OF FLUORINE-CONTAINING POLYMERS AND FLUORINE-CONTAINING POLYMERS
    5.
    发明公开
    PROCESS FOR PRODUCTION OF FLUORINE-CONTAINING POLYMERS AND FLUORINE-CONTAINING POLYMERS 无效
    用于生产含氟聚合物和含氟聚合物

    公开(公告)号：EP1688442A4

    公开(公告)日：2008-09-24

    申请号：EP04818982

    申请日：2004-11-19

    申请人： DAIKIN IND LTD

    发明人： TAKASE YOSHIYUKI ,  ISHII KENJI ,  FUKUOKA SHOUJI

    IPC分类号： C08F8/00 ,  C08F14/00 ,  C08F14/18

    CPC分类号： C08F14/18 ,  C08F8/00 ,  C08F14/22 ,  C08F14/24 ,  C08F14/26 ,  C08F14/28 ,  C08F114/22 ,  C08F114/24 ,  Y10T428/3154

    摘要： The present invention aims at providing a process for the production of fluorine-containing polymers whose end groups are stabilized and which are excellent in moldability. The present invention relates to a process for the production of fluorine-containing polymers which comprises melt-kneading a melt-processable fluorine-containing polymer (A) having a specific unstable end group (P) in a kneader provided with a stabilization zone to convert the polymer (A) into a fluorine-containing polymer (B) wherein the specific unstable end group (P) is replaced by -CF2H, characterized in that the specific unstable end group (P) is alkoxycarbonyl, fluoroalkoxycarbonyl and/or a salt of carboxyl with a quaternary nitrogen compound, that the melt kneading is conducted in the presence or absence of an alkali metal element or an alkaline earth metal element and the mass of the alkali metal element or the alkaline earth metal element is 2ppm or below based on the substance to be melt-kneaded, and that the melt kneading in the stabilization zone is carried out in the presence of a water.

    PROCESS FOR THE PRODUCTION OF WATER-SOLUBLE FLUORINE -CONTAINING VINYL ETHERS
    8.
    发明公开
    PROCESS FOR THE PRODUCTION OF WATER-SOLUBLE FLUORINE -CONTAINING VINYL ETHERS 有权
    METHOD FOR PRODUCING含水含氟乙烯基醚

    公开(公告)号：EP1553081A4

    公开(公告)日：2006-07-05

    申请号：EP03736218

    申请日：2003-06-16

    申请人： DAIKIN IND LTD

    发明人： ISHII KENJI ,  SHINOKI NORIYUKI ,  ARASE TAKUYA ,  ICHIHARA KAZUYOSHI ,  MANTANI TOSHIYA

    IPC分类号： C07C303/22 ,  C07C309/10

    CPC分类号： C07C303/22 ,  C07C309/10

    摘要： A process for producing compounds represented by the general formula (II): CF2=CF-O-(CF2CF(Y1)-O)n-(CFY2)m-Z (II) [wherein Y1 and Y2 are each fluoro, chloro, perfluoroalkyl, or fluorochloroalkyl; Z is a hydrophilic group; n is an integer of 0 to 3; and m is an integer of 1 to 5] by subjecting 100 parts by mass of a compound represented by the general formula (I): A-C(=O)-CF(CF2X)-O-(CF2CF(Y1)-O)n-(CFY2)m-Z (I) [wherein A is -O-alkali metal or -O-alkaline earth metal (1/2); X is halogeno; and Y1, Y2, Z, n and m are each as defined above] to pyrolysis at a temperature of 50°C or above but below 170°C in the presence of 10 to 1000 parts by mass of a coordinating organic solvent having an ability to coordinate to an alkali metal ion or an alkaline earth metal ion.