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    Modified polytetrafluoroethylene fine powder and method for the production of the same
    1.
    发明授权
    Modified polytetrafluoroethylene fine powder and method for the production of the same 有权
    改性聚四氟乙烯细粉及其制备方法

    公开(公告)号：US06531557B1

    公开(公告)日：2003-03-11

    申请号：US09242272

    申请日：1999-03-12

    申请人： Kazutaka Hosokawa ,  Yoshinori Nanba ,  Takahisa Aoyama ,  Tetsuo Shimizu

    发明人： Kazutaka Hosokawa ,  Yoshinori Nanba ,  Takahisa Aoyama ,  Tetsuo Shimizu

    IPC分类号： C08F21426

    CPC分类号： C08F214/262

    摘要： A modified polytetrafluoroethylene fine powder containing agglomerates of colloidal particles with an average particle size of from 0.05 to 0.5 &mgr;m which comprise a copolymer of tetrafluoroethylene and an olefin-monomer represented by X(CF2)nOCF═CF2 in which X is a hydrogen atom, a fluorine atom or a chlorine atom, and n is an integer of 1 to 6, and/or C3F7(OCF2CF2CF2)m[OCF(CF3)CF2]pOCF═CF2 in which m and p are independently an integer of 0 to 4, provided that the sum of m and p is not 0 (zero), a content of the olefin monomer being from 0.02 to 0.3 wt. %, wherein the copolymer has a molecular weight distribution Mw/Mn of from 1.5 to 4.5 and a standard specific gravity of from 2.135 to 2.175. This modified polytetrafluoroethylene has good paste extrudability, and provides molded articles having good mechanical properties, in particular, pressure resistance.

    摘要翻译： 一种改性聚四氟乙烯细粉末，其含有平均粒径为0.05〜0.5μm的胶体粒子的附聚物，其包含由X（CF 2）n OCF = CF 2（其中X为氢原子）表示的四氟乙烯与烯烃单体的共聚物， 氟原子或氯原子，n为1〜6的整数，和/或C 3 F 7（OCF 2 CF 2 CF 2）m [OCF（CF 3）CF 2] p OCF = CF 2，其中m和p分别为0〜4的整数， m和p的和不为0（零），烯烃单体的含量为0.02-0.3重量％。 ％，其中共聚物的分子量分布Mw / Mn为1.5〜4.5，标准比重为2.135〜2.175。 该改性聚四氟乙烯具有良好的糊料挤出性，并提供具有良好机械性能，特别是耐压性的模制品。

    Modified polytetrafluoroethylene fine powder and process for preparing the same
    2.
    发明授权
    Modified polytetrafluoroethylene fine powder and process for preparing the same 有权
    改性聚四氟乙烯细粉及其制备方法

    公开(公告)号：US06747108B1

    公开(公告)日：2004-06-08

    申请号：US09743573

    申请日：2001-01-12

    申请人： Kazutaka Hosokawa ,  Tatsuro Uchida ,  Shinichi Yano ,  Yoshinori Nanba

    发明人： Kazutaka Hosokawa ,  Tatsuro Uchida ,  Shinichi Yano ,  Yoshinori Nanba

    IPC分类号： C08F200

    CPC分类号： C08F2/38 ,  C08F214/262

    摘要： In the preparation of a modified polytetrafluoroethylene fine powder by polymerizing tetrafluoroethylene in an aqueous medium in the presence of a water soluble fluorine-containing dispersant, a fluoroalkyl vinyl ether is added to a reaction system at latest at a start of a reaction and a copolymerization reaction of the fluoroalkyl vinyl ether with tetrafluoroethylene is initiated, and a chain transfer agent is added to the reaction system after at least 80% of tetrafluoroethylene to be polymerized is consumed. The obtained modified polytetrafluoroethylene fine powder has good molding properties, in particular, extrusion properties, and high heat resistance.

    摘要翻译： 在水溶性含氟分散剂存在下，通过在水性介质中聚合四氟乙烯来制备改性聚四氟乙烯细粉末，最初在反应开始时向反应体系中加入氟烷基乙烯基醚，并进行共聚反应 的氟代烷基乙烯基醚与四氟乙烯引发，并且在消耗待聚合的四氟乙烯的至少80％之后，向反应体系中加入链转移剂。 得到的改性聚四氟乙烯细粉具有良好的成型性，特别是挤出性，耐热性高。

    Tetrafluoroethylene based resin molding material excellent in high frequency electric characteristics
    4.
    发明授权
    Tetrafluoroethylene based resin molding material excellent in high frequency electric characteristics 有权
    四氟乙烯基树脂成型材料具有优异的高频电特性

    公开(公告)号：US07129298B2

    公开(公告)日：2006-10-31

    申请号：US10333821

    申请日：2001-08-02

    申请人： Makoto Ono ,  Michio Asano ,  Yoshinori Nanba ,  Shunji Kasai ,  Hiroyuki Yoshimoto ,  Shinichi Yano ,  Tetsuo Shimizu

    发明人： Makoto Ono ,  Michio Asano ,  Yoshinori Nanba ,  Shunji Kasai ,  Hiroyuki Yoshimoto ,  Shinichi Yano ,  Tetsuo Shimizu

    IPC分类号： C08F14/26

    CPC分类号： C09D127/18 ,  C08F259/08 ,  C08L27/18 ,  Y10T428/3154 ,  C08F214/18 ,  C08F214/28

    摘要： The present invention provides a TFE resin molding material which has electric characteristics, particularly low dielectric dissipation factor, in a microwave area, can also lower extrusion pressure as the material is of low molecular weight and can provide a molded article excellent in surface smoothness. The material is especially useful as a coating material for a coaxial cable for equipment in which microwave is used, including satellite transmitting equipment and a cell phone base station. A tetrafluoroethylene resin molding material excellent in high frequency electric characteristics, which provides a molded article having a dielectric constant of at most 2.2 and a dielectric dissipation factor of at most 1.60×10−4 under 12 GHz, and a standard specific gravity of at least 2.192 and less than 2.3 is provided. As the tetrafluoroethylene resin, a tetrafluoroethylene homopolymer or a copolymer of 99.9 to 99.9999% by mole of tetrafluoroethylene and 0.0001 to 0.1% by mole of a specific fluoromonomer is used.

    摘要翻译： 本发明提供一种在微波区域具有电特性，特别是低介电损耗因数的TFE树脂成型材料，还可以降低挤出压力，因为该材料具有低分子量，并且可提供表面平滑性优异的成型体。 该材料作为用于其中使用微波的设备的同轴电缆的涂层材料是特别有用的，包括卫星发射设备和蜂窝电话基站。 一种高频电特性优异的四氟乙烯树脂成型材料，其提供介电常数为2.2以下的介电损耗因数和12GHz以下的1.60×10 -4以下的介电损耗因数， 提供了至少2.192和小于2.3的标准比重。 作为四氟乙烯树脂，使用四氟乙烯均聚物或99.9〜99.9999摩尔％的四氟乙烯和0.0001〜0.1摩尔％的特定含氟单体的共聚物。

    Surfactant, method of producing a fluoropolymer, fluoropolymer aqueous dispersion
    8.
    发明申请
    Surfactant, method of producing a fluoropolymer, fluoropolymer aqueous dispersion 审中-公开
    表面活性剂，含氟聚合物的制造方法，含氟聚合物水性分散体

    公开(公告)号：US20070142513A1

    公开(公告)日：2007-06-21

    申请号：US11312570

    申请日：2005-12-21

    申请人： Nobuhiko Tsuda ,  Yoshinori Nanba ,  Yasuhiko Sawada ,  Tetsuo Shimizu

    发明人： Nobuhiko Tsuda ,  Yoshinori Nanba ,  Yasuhiko Sawada ,  Tetsuo Shimizu

    IPC分类号： C08K5/42

    CPC分类号： C08K5/42

    摘要： The present invention provides a surfactant making it possible to obtain particles comprising a fluoropolymer at a size smaller in diameter in an aqueous dispersion obtained by polymerization in the presence of the same. The present invention is a surfactant comprising a fluorine-containing-sulfobutanedioic-acid-ester derivative represented by the general formula (i): Y—Rf1—(CH2)m—OCOCH(SO3M)-CH2COO—(CH2)n—Rf2—Y  (i) wherein Y represents hydrogen atom or fluorine atom; when Y is hydrogen atom, one of Rf1 and Rf2 is —(CF2CF2)3— and the other is —(CF2CF2)2— or —(CF2CF2)3— and, when Y is fluorine atom, Rf1 and Rf2 are the same or different and each is a divalent hydrocarbon group containing 1 to 4 carbon atoms and containing at least one fluorine atom; m and n are the same or different and each represents an integer of 1 to 3; and M represents NH4, Li, Na, K or H.

    摘要翻译： 本发明提供了一种表面活性剂，其可以获得包含通过在其存在下通过聚合获得的水分散体中的直径小的含氟聚合物的颗粒。 本发明是包含由通式（i）表示的含氟磺基丁二酸 - 酯衍生物的表面活性剂：＆lt;线内配方说明=“在线式”末端=“铅”→> Y - （CH 2） - （O 3 M）-CH 2 - （CH 2） ＆lt;＆lt;＆lt; COO-（CH 2）＆gt;＆lt; 2＆lt; 2＆lt; 2＆gt; -Y（i） 其中Y代表氢原子或氟原子; 当Y是氢原子时，Rf 1和Rf 2之一是 - （CF 2 CH 2 CH 2） （CF 2）2 - 或 - （CF 2）2 - - - （CF 2）2 - R 2和R 2可以相同或不同，并且当Y是氟原子时，R f'1和R f'2 < 各自是含有1至4个碳原子并含有至少一个氟原子的二价烃基; m和n相同或不同，各自表示1〜3的整数。 M表示NH 4，Li，Na，K或H.