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    Tetrafluoroethylene copolymer
    1.
    发明授权
    Tetrafluoroethylene copolymer 有权
    四氟乙烯共聚物

    公开(公告)号：US06541589B1

    公开(公告)日：2003-04-01

    申请号：US09977812

    申请日：2001-10-15

    申请人： Richard L. Baillie

    发明人： Richard L. Baillie

    IPC分类号： C08F21426

    CPC分类号： C08F214/18 ,  C08F214/26 ,  Y10T428/31862

    摘要： A polymerization process for producing a copolymer of tetrafluoroethylene and perfluorobutylethylene, prepared by an aqueous dispersion polymerization technique, and the resin produced thereby, are provided. This copolymer contains a relatively small amount, between about 0.02 weight percent and about 0.6 weight percent, of comonomer polymerization units. The copolymer is believed to be comprised of a core-shell structure wherein the polymerized comonomer units reside primarily within the core. The primary particle size of the copolymer ranges from 0.175 microns to and including 0.203 microns and the standard specific gravity is less than 2.143. This copolymer possesses a unique combination of very small particle size coupled with high molecular weight, a combination not heretofore achieved in tetra-fluoroethylene polymers of the dispersion or fine powder type. The process of this invention is characterized by permanganate initiation and the entire reaction is carried out in the absence of zinc chloride or other ionic strength enhancer. The addition of initiator must be stopped well before completion of the reaction, preferably at or before the mid-point of the complete reaction.

    摘要翻译： 提供了通过水分散聚合技术制备四氟乙烯和全氟丁基乙烯共聚物的聚合方法以及由此制备的树脂。 该共聚物含有相对少量的约0.02重量％至约0.6重量％的共聚单体聚合单元。 该共聚物被认为是由核 - 壳结构组成，其中聚合的共聚单体单元主要存在于芯中。 共聚物的一次粒径为0.175微米至0.203微米，标准比重小于2.143。 该共聚物具有与分子量或细粉末类型的四氟乙烯聚合物中迄今未得到的结合的高分子量非常小的粒度的独特组合。 本发明的方法的特征在于高锰酸盐引发，整个反应在不存在氯化锌或其它离子强度增强剂的情况下进行。 引发剂的加入必须在反应完成之前停止，优选在完全反应的中点或之前。

    Curable base-resistant fluoroelastomers
    2.
    发明授权
    Curable base-resistant fluoroelastomers 有权

    公开(公告)号：US06703450B2

    公开(公告)日：2004-03-09

    申请号：US10137914

    申请日：2002-05-02

    申请人： John Gordon Bauerle ,  Walter Werner Schmiegel

    发明人： John Gordon Bauerle ,  Walter Werner Schmiegel

    IPC分类号： C08F21426

    CPC分类号： C08F214/265

    摘要： Compositions of specialty fluoroelastomers containing copolymerized units of tetrafluoroethylene, propylene, optionally vinylidene fluoride, and a cure site monomer selected from the group consisting of i) trifluoroethylene, ii) 3,3,3-trifluoropropene-1, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene are readily curable with polyhydroxy curing systems. The resulting cured articles have a combination of excellent resistance to alkaline fluids, superior tensile properties and compression set resistance.

    Thermoprocessable copolymers of TFE
    3.
    发明授权
    Thermoprocessable copolymers of TFE 有权
    TFE的热可加工共聚物

    公开(公告)号：US06545111B2

    公开(公告)日：2003-04-08

    申请号：US09885930

    申请日：2001-06-22

    申请人： Pasqua Colaianna ,  Giulio Brinati ,  Giambattista Besana

    发明人： Pasqua Colaianna ,  Giulio Brinati ,  Giambattista Besana

    IPC分类号： C08F21426

    CPC分类号： C08F214/262

    摘要： A thermoprocessable copolymer of TFE essentially formed by: (a) from 4.5 to 8.5% by weight of perfluoromethylvinylether (PMVE); (b) from 0.3 to 1.6% by weight of a perfluorodioxole of formula:  wherein: Y═F, ORf, Rf wherein Rf is a perfluoroalkyl having from 1 to 5 carbon atoms; X1 and X2, equal to or diferent from each other, are —F or —CF3; (c) TFE, forming the remaining part to 100%.

    摘要翻译： TFE的热可加工共聚物基本上由以下组成：（a）4.5至8.5重量％的全氟甲基乙烯基醚（PMVE）;（b）0.3至1.6重量％的全氟二恶烷，其中：Y = F，OR f，Rf 其中Rf是具有1至5个碳原子的全氟烷基; X 1和X 2彼此相同或不同，是-F或-CF 3;（c）TFE，剩余部分形成100％。

    Perfluoroelastomers
    5.
    发明授权
    Perfluoroelastomers 有权
    全氟弹性体

    公开(公告)号：US06642331B2

    公开(公告)日：2003-11-04

    申请号：US10270633

    申请日：2002-10-16

    申请人： Marco Apostolo ,  Stefano Arrigoni

    发明人： Marco Apostolo ,  Stefano Arrigoni

    IPC分类号： C08F21426

    CPC分类号： C08F214/26 ,  C08F236/20

    摘要： Perfluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) tetrafluoroethylene (TFE); b) fluorovinylethers of general formula: CFX═CXOCF2OR  (I) c) bis-olefins having general formula: RI1RI2C═CRI3—Z—CRI4═CRI5RI6  (IA) d) optionally, one or more fluorinated olefinic comonomers selected from C2-C8 perfluoroolefins, perfluoroalkylvinylethers (PAVE) CF2═CFOR2f, perfluoro-oxyalkylvinylethers CF2═CFOXa, said perfluoroelastomers comprising iodine and/or bromine atoms in the chain and/or in end position, said halogen atoms deriving from “cure site” comonomers and/or from chain transfer agents used in polymerization.

    摘要翻译： 通过聚合以下单体可获得的全氟弹性体：a）四氟乙烯（TFE）; b）以下通式的氟乙烯基醚：c）具有以下通式的双烯烃：d）任选的一种或多种选自C2的氟化烯烃共聚单体 -C8全氟烯烃，全氟烷基乙烯基醚（PAVE）CF2 = CFOR2f，全氟烷氧基乙烯基醚CF2 =CFOXα，所述全氟弹性体在链和/或末端位置包含碘和/或溴原子，所述卤素原子衍生自 “固化位点”共聚单体和/或从聚合中使用的链转移剂。

    Fluoropolymers resistant to stress cracking
    9.
    发明授权
    Fluoropolymers resistant to stress cracking 有权
    耐应力开裂的含氟聚合物

    公开(公告)号：US06653379B2

    公开(公告)日：2003-11-25

    申请号：US09904235

    申请日：2001-07-12

    申请人： Thomas J. Blong ,  Lisa P. Chen ,  Ralph Kaulbach ,  Friedrich Kloos ,  Georg Burkard

    发明人： Thomas J. Blong ,  Lisa P. Chen ,  Ralph Kaulbach ,  Friedrich Kloos ,  Georg Burkard

    IPC分类号： C08F21426

    CPC分类号： C08F214/262

    摘要： The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP. These fluorothermoplastic compositions have a flex life that fits the equation: log(flex life cycles)≧0.71+4.0*(MFI(−0.294)), a method of making fluorothermoplastic compositions, a method of improving stress crack resistance, and fluorothermoplastic articles.

    摘要翻译： 本发明提供一种含氟热塑性组合物，其包含衍生自约94至约97.5摩尔％（摩尔％）四氟乙烯（TFE），约2至约3摩尔％全氟（丙基乙烯基醚）（PPVE）和约0.5至约3 mol％六氟丙烯（HFP）。 本发明还提供一种含氟热塑性组合物，其包含衍生自约94至约97mol％TFE，约0.75至约3mol％PPVE和约1.5至约3.5mol％HFP的共聚单元。 这些氟热塑性组合物具有适合以下等式的柔性寿命：制备氟热塑性组合物的方法，改善耐应力开裂性的方法和氟热塑性制品。

    Modified polytetrafluoroethylene fine powder and method for the production of the same
    10.
    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。