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    • 2. 发明申请
    • Water base dispersion of fluorinated polymer and process for producing the same
    • 氟化聚合物的水基分散体及其制备方法
    • US20070155891A1
    • 2007-07-05
    • US10582107
    • 2004-12-09
    • Nobuhiko TsudaChie SawauchiYasuhiko SawadaTetsuo Shimizu
    • Nobuhiko TsudaChie SawauchiYasuhiko SawadaTetsuo Shimizu
    • C08L27/12
    • C08J3/03C08F6/16C08F14/26C08F214/26C08J2327/12C08L27/18C08L71/02C08L27/12C08F2/20C08L2666/14
    • The object of the present invention is a fluoropolymer aqueous dispersion showing only a moderate viscosity increase upon temperature rise and having a low fluorine-containing anionic surfactant concentration as well as a method of producing such fluoropolymer aqueous dispersion. The present invention provides a fluoropolymer aqueous dispersion comprising a particle comprising a fluoropolymer dispersed in an aqueous medium in the presence of a nonionic surfactant, wherein a supernatant for assaying as obtained by subjecting the fluoropolymer aqueous dispersion to 30 minutes of centrifugation at 25° C. and at a gravitational acceleration of 1677 G, when subjected to high-performance liquid chromatography [HPLC] under the conditions of a flow rate of 1.0 ml/minute and a column temperature of 40° C. using an acetonitrile/0.05 M aqueous solution of phosphoric acid (60/40% by volume) mixture as a developing solution, followed by detection at an absorption wavelength at which the nonionic surfactant can be identified, shows a ratio (A1/A0), which is the ratio between the total area (A0) under the detected line and the area (A1) under the detected line over a retention time period shorter than 16 minutes, of not lower than 0.4 and the supernatant for assaying has a fluorine-containing anionic surfactant content of not higher than 100 ppm.
    • 本发明的目的是提供一种含氟聚合物水性分散体,其含氟聚合物水性分散体的制造方法,仅在温度上升时适度粘度上升,含氟阴离子表面活性剂浓度低的方法。 本发明提供一种含氟聚合物水分散体,其包含在非离子表面活性剂存在下分散在含水介质中的含氟聚合物的颗粒,其中通过在25℃下使含氟聚合物水分散体离心30分钟获得的上清液 并且在1677G的重力加速度下,在流速为1.0ml /分钟,柱温为40℃的条件下进行高效液相色谱[HPLC],使用乙腈/0.0M的 磷酸(60/40体积%)混合物作为显影液,然后在可以鉴定非离子表面活性剂的吸收波长处进行检测,显示出比例(A≤0.1/ 0 ),其是在检测到的线下的总面积(A 0 )与所检测到的线之间的面积(A 1 < 保留时间短于16分钟,不低于 0.4,测定用上清液的含氟阴离子表面活性剂含量不高于100ppm。
    • 10. 发明申请
    • Surfactant, method of producing a fluoropolymer, fluoropolymer aqueous dispersion
    • 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
    • US20070142513A1
    • 2007-06-21
    • US11312570
    • 2005-12-21
    • Nobuhiko TsudaYoshinori NanbaYasuhiko SawadaTetsuo Shimizu
    • Nobuhiko TsudaYoshinori NanbaYasuhiko SawadaTetsuo Shimizu
    • C08K5/42
    • C08K5/42
    • 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.
    • 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.