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    • 11. 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。
    • 17. 发明授权
    • Aqueous fluororesin dispersion and method for producing the same
    • 氟树脂水分散体及其制造方法
    • US08540901B2
    • 2013-09-24
    • US13314237
    • 2011-12-08
    • Chie SawauchiNobuhiko Tsuda
    • Chie SawauchiNobuhiko Tsuda
    • H01B1/00C08L27/12
    • C08J3/03C08J2327/12C09D127/18
    • The present invention provides an aqueous fluororesin dispersion comprising a melt-processable fluororesin which is low in fluorinated surfactant concentration and excellent in dispersion stability even when the concentration of the melt-processable fluororesin is high. The present invention is related to an aqueous fluororesin dispersion comprising a melt-processable fluororesin particle dispersed in an aqueous medium, wherein a concentration of the melt-processable fluororesin is 55 to 75% by mass relative to the aqueous fluororesin dispersion, and a fluorinated surfactant content in the aqueous fluororesin dispersion is not higher than a level corresponding to 100 ppm of the melt-processable fluororesin.
    • 本发明提供一种包含可熔融加工的氟树脂的含水氟树脂分散体,其即使在可熔融加工的氟树脂的浓度高时,氟化表面活性剂浓度低,分散稳定性也优异。 本发明涉及一种含氟树脂分散体,其包含分散在水性介质中的可熔融加工的氟树脂颗粒,其中可熔融加工的氟树脂的浓度相对于氟树脂水分散体为55〜75质量%,氟化表面活性剂 氟树脂水分散液中的含量不高于可熔融加工的氟树脂的100ppm的水平。
    • 18. 发明授权
    • Aqueous fluorine-containing polymer dispersion
    • 含氟聚合物水分散体
    • US08202955B2
    • 2012-06-19
    • US12307172
    • 2007-07-05
    • Chie SawauchiNobuhiko Tsuda
    • Chie SawauchiNobuhiko Tsuda
    • C08F259/08C08F2/30
    • C08F214/26C08F6/16C08F259/08C09D127/18C08L27/18C08F214/18
    • The present invention provides an aqueous fluoropolymer dispersion having good mechanical characteristics and storage stability and containing substantially no fluorinated surfactant. The present invention is related to an aqueous fluoropolymer dispersion comprising a dispersed fluoropolymer particle with an average primary particle diameter of 50 to 400 nm, a surface layer of the dispersed fluoropolymer particle being obtained by emulsion polymerization of a monomer composition consisting of 99.999 to 98 mole percent of tetrafluoroethylene and 0.001 to 2 mole percent of a modifier monomer, a fluorinated surfactant content being not higher than 50 ppm, a fluoropolymer content being 20 to 75% by mass, and a nonfluorinated nonionic surfactant content being 2 to 15% by mass relative to 100% by mass of the fluoropolymer.
    • 本发明提供具有良好的机械特性和储存稳定性的含氟聚合物水分散体,并且基本上不含氟化表面活性剂。 本发明涉及含氟平均一次粒径为50〜400nm的分散含氟聚合物粒子的水性含氟聚合物分散体,分散的含氟聚合物粒子的表面层是将由99.999〜98摩尔的单体组合物 四氟乙烯百分比和0.001〜2摩尔%的改性剂单体,氟化表面活性剂含量不高于50ppm,含氟聚合物含量为20〜75质量%,非氟化非离子表面活性剂含量相对于2〜15质量% 至100质量%的含氟聚合物。
    • 19. 发明申请
    • AQUEOUS FLUORINE-CONTAINING POLYMER DISPERSION
    • 含水氟聚合物分散体
    • US20090286932A1
    • 2009-11-19
    • US12307172
    • 2007-07-05
    • Chie SawauchiNobuhiko Tsuda
    • Chie SawauchiNobuhiko Tsuda
    • C08F2/22C08L27/12
    • C08F214/26C08F6/16C08F259/08C09D127/18C08L27/18C08F214/18
    • The present invention provides an aqueous fluoropolymer dispersion having good mechanical characteristics and storage stability and containing substantially no fluorinated surfactant. The present invention is related to an aqueous fluoropolymer dispersion comprising a dispersed fluoropolymer particle with an average primary particle diameter of 50 to 400 nm, a surface layer of the dispersed fluoropolymer particle being obtained by emulsion polymerization of a monomer composition consisting of 99.999 to 98 mole percent of tetrafluoroethylene and 0.001 to 2 mole percent of a modifier monomer, a fluorinated surfactant content being not higher than 50 ppm, a fluoropolymer content being 20 to 75% by mass, and a nonfluorinated nonionic surfactant content being 2 to 15% by mass relative to 100% by mass of the fluoropolymer.
    • 本发明提供具有良好的机械特性和储存稳定性的含氟聚合物水分散体,并且基本上不含氟化表面活性剂。 本发明涉及含氟平均一次粒径为50〜400nm的分散含氟聚合物粒子的水性含氟聚合物分散体,分散的含氟聚合物粒子的表面层是将由99.999〜98摩尔的单体组合物 四氟乙烯百分比和0.001〜2摩尔%的改性剂单体,氟化表面活性剂含量不高于50ppm,含氟聚合物含量为20〜75质量%,非氟化非离子表面活性剂含量相对于2〜15质量% 至100质量%的含氟聚合物。
    • 20. 发明申请
    • AQUEOUS FLUOROPOLYMER DISPERSION AND PROCESS FOR PRODUCING THE SAME
    • 水性氟聚合物分散体及其生产方法
    • US20090105372A1
    • 2009-04-23
    • US11916753
    • 2006-06-09
    • Chie SawauchiNobuhiko Tsuda
    • Chie SawauchiNobuhiko Tsuda
    • C08F6/10
    • C08F14/18C08J3/05C08J2327/12C08K5/42C09D127/18C08F2/16C08L27/12
    • A process for producing an aqueous fluoropolymer dispersion which includes adding a specific compound to a to-be-treated aqueous fluoropolymer dispersion containing a particle of fluoropolymer dispersed therein, the to-be-treated aqueous fluoropolymer dispersion containing a fluorinated surfactant (A) with a molecular weight lower than 1000 in an amount of 100 ppm or less of the fluoropolymer and the specific compound being (1) a sulfosuccinic acid alkyl ester or a salt thereof, or a sulfosuccinic acid fluoroalkyl ester or a salt thereof, (2) the fluorinated surfactant (A), (3) a fluorinated surfactant (B) with a molecular weight lower than 1000, differing from the fluorinated surfactant (A) and/or (4) an aliphatic carboxylic acid or a salt thereof, which compound is added in total amount of 10 to 5000 ppm of said fluoropolymer.
    • 一种含氟聚合物水分散体的制造方法,其特征在于,在含有含氟聚合物的分散体的待处理含水氟聚合物分散体中添加特定的化合物,含有氟化表面活性剂(A)的待处理含水氟聚合物分散液 (1)磺基琥珀酸烷基酯或其盐或磺基琥珀酸氟代烷基酯或其盐的分子量低于1000的氟聚合物,特定化合物的量低于1000,(2)氟化 表面活性剂(A),(3)分子量低于1000的氟化表面活性剂(B)与氟化表面活性剂(A)和/或(4)脂族羧酸或其盐不同,该化合物加入 总量为10〜5000ppm的所述含氟聚合物。