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    • 1. 发明授权
    • Fluorine-containing resin material lowly permeable to liquid chemical
    • 含氟树脂材料对液体化学品渗透性低
    • US06998454B2
    • 2006-02-14
    • US10465643
    • 2003-06-20
    • Takahiro TairaTakahisa AoyamaKatsuhide OtaniTetsuo Shimizu
    • Takahiro TairaTakahisa AoyamaKatsuhide OtaniTetsuo Shimizu
    • C08F16/24
    • C08F214/262C08L27/18Y10T428/3154
    • To provide a suitable material having improved impermeability to liquid chemicals and cracking resistance while retaining excellent heat resistance and processability inherent in FEP-based fluororesins, a molded article of which is useful in the field of semiconductor production apparatus and the like. The present invention provides a fluorine-containing resin material comprising a fluorine-containing copolymer comprising 85 to 95.5% by mole of a repeating unit derived from tetrafluoroethylene, 5 to 10% by mole of a repeating unit derived from hexafluoropropylene and 0.1 to 5% by mole of a repeating unit derived from at least one higher perfluoro(vinyl ether) represented by the formula (1): CF2═CF—O—Rf1  (1) wherein Rf1 is a perfluoroalkyl group having 5 to 10 carbon atoms or a perfluoro(alkoxyalkyl) group having 4 to 17 carbon atoms, and molded article thereof.
    • 为了提供对液体化学品具有改进的不渗透性和耐开裂性的合适的材料,同时保持了基于FEP的氟树脂固有的优异的耐热性和加工性,其成型制品可用于半导体制造装置等领域。 本发明提供一种含氟树脂材料,其含有含有85〜95.5摩尔%的来自四氟乙烯的重复单元,5〜10摩尔%的来自六氟丙烯的重复单元和0.1〜5重量% 摩尔衍生自由式表示的至少一种较高全氟(乙烯基醚)的重复单元
    • 2. 发明授权
    • Fluorocopolymer and fluororesin composition lowly permeable to liquid chemical
    • 含氟共聚物和氟树脂组合物对液体化学品渗透性低
    • US06774196B1
    • 2004-08-10
    • US10148230
    • 2002-05-28
    • Takahiro TairaTakahisa AoyamaKatsuhide OtaniTetsuo Shimizu
    • Takahiro TairaTakahisa AoyamaKatsuhide OtaniTetsuo Shimizu
    • C08F11612
    • C08L27/18C08F214/262
    • To provide a novel PFA-based fluorine-containing copolymer having improved impermeability to liquid chemicals while retaining the excellent heat resistance, stress cracking resistance and processability inherent in PFA-based fluororesins, a material and a molded article useful in the field of semiconductor production apparatus and the like, using the copolymer. The present invention provides a fluorine-containing copolymer comprising 90 to 99.4% by mole of a repeating unit derived from tetrafluoroethylene, 0.5 to 5% by mole of a repeating unit derived from at least one lower perfluoro(alkyl vinyl ether) represented by the formula (1): CF2═CF—O—Rf1  (1) in which Rf1 is a perfluoroalkyl group having 2 to 4 carbon atoms, and 0.1 to 5% by mole of a repeating unit derived from at least one higher perfluoro(vinyl ether) represented by the formula (2): CF2═CF—O—Rf2  (2) in which Rf2 is a perfluoroalkyl group having 5 to 10 carbon atoms or a perfluoro(alkoxy alkyl) group having 4 to 17 carbon atoms, wherein the fluorine-containing copolymer has a melt flow rate of 0.1 g/10 minutes to 100 g/10 minutes and melting point of 290° to 325° C., and a resin composition using the same.
    • 提供一种具有改善的对液体化学品的不渗透性的新型PFA基含氟共聚物,同时保持了PFA类氟树脂中固有的优异的耐热性,抗应力开裂性和加工性,可用于半导体制造装置领域的材料和模塑制品 等等,使用该共聚物。 本发明提供一种含有90〜99.4摩尔%的来自四氟乙烯的重复单元的含氟共聚物,0.5〜5摩尔%的由式(1)表示的至少一种以下的低级全氟(烷基乙烯基醚)的重复单元, (1)表示的化合物:其中Rf 1为碳原子数2〜4的全氟烷基,0.1〜5摩尔%的由式(2)表示的至少一种以上的全氟(乙烯基醚)的重复单元, :其中Rf 2为碳原子数5〜10的全氟烷基或碳原子数4〜17的全氟(烷氧基烷基),其中,所述含氟共聚物的熔体流动速率为0.1g / 10分钟〜 100g / 10分钟,熔点为290〜325℃,使用该树脂组合物。
    • 9. 发明授权
    • Modified polytetrafluoroethylene fine powder and method for the production of the same
    • 改性聚四氟乙烯细粉及其制备方法
    • US06531557B1
    • 2003-03-11
    • US09242272
    • 1999-03-12
    • Kazutaka HosokawaYoshinori NanbaTakahisa AoyamaTetsuo Shimizu
    • Kazutaka HosokawaYoshinori NanbaTakahisa AoyamaTetsuo Shimizu
    • C08F21426
    • C08F214/262
    • 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.
    • 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。