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    Fluoroelastomers endowed with high resistance to polar solvents and to bases
    1.
    发明授权
    Fluoroelastomers endowed with high resistance to polar solvents and to bases 失效
    氟弹性体赋予极性溶剂和碱的高抗性

    公开(公告)号：US5639838A

    公开(公告)日：1997-06-17

    申请号：US538180

    申请日：1995-08-23

    申请人： Margherita Albano ,  Vincenzo Arcella ,  Graziella Chiodini ,  Anna Minutillo

    发明人： Margherita Albano ,  Vincenzo Arcella ,  Graziella Chiodini ,  Anna Minutillo

    IPC分类号： C08F16/14 ,  C08F214/26 ,  C08F216/14 ,  C09K3/10 ,  C08F16/24

    CPC分类号： C08F214/262

    摘要： Fluoroelastomers comprising, by mole:(a) from 33 to 75% of tetrafluoroethylene (TFE);(b) from 15 to 45% of a perfluorovinylether (PVE);(c) from 10 to 22% of vinylidene fluoride (VDF).They are endowed with high resistance to polar solvents and to bases, excellent compression set also at high temperatures, low Tg and good processability.They result particularly suitable for the manufacture of sealing elements (O-rings) for plants intended to the production of methylterbutylether (MTBE).

    摘要翻译： 含有摩尔的氟弹性体：（a）33-75％的四氟乙烯（TFE）; （b）15至45％的全氟乙烯基醚（PVE）; （c）10至22％的偏二氟乙烯（VDF）。 它们具有对极性溶剂和碱的高耐性，在高温下也具有优异的压缩永久变形，低Tg和良好的加工性。 它们特别适用于制造用于生产甲基丁基醚（MTBE）的植物的密封元件（O型圈）。

    Fluoroelastomeric and fluoroplastomeric copolymers having a high resistance to bases
    3.
    发明授权
    Fluoroelastomeric and fluoroplastomeric copolymers having a high resistance to bases 失效
    具有高抗碱碱性的氟弹性体和氟塑料共聚物

    公开(公告)号：US5354824A

    公开(公告)日：1994-10-11

    申请号：US64276

    申请日：1993-05-20

    申请人： Vincenzo Arcella ,  Giulio Brinati ,  Margherita Albano ,  Anna Minutillo ,  Graziella Chiodini

    发明人： Vincenzo Arcella ,  Giulio Brinati ,  Margherita Albano ,  Anna Minutillo ,  Graziella Chiodini

    IPC分类号： C08F14/22 ,  C08F214/22 ,  C09K3/10 ,  C08F16/24

    CPC分类号： C08F214/225

    摘要： The invention relates to new fluoroelastomeric copolymers endowed with resistance to bases and suitable in particular for preparing O-rings, comprising:______________________________________ (I) VDF 47-80 mols % HFP and/or PAVE 16-30 mols % hydrogenated olefin containing 2-25 mols % 2-4 C or (II) VDF 42-80 mols % PAVE 16-30 mols % hydrogenated olefin containing 2-30 mols % 2-4 C ______________________________________ The invention relates to new fluoroplastomeric copolymers endowed with resistance to bases, comprising:______________________________________ (III) VDF 70-99 mols % HFP and/or PAVE 0-16 mols % hydrogenated olefin containing 1-30 mols % 2-4 C ______________________________________ A further object of the invention is a process for preparing the abovesaid fluoroelastomeric and fluoroplastomeric copolymers.

    摘要翻译： 本发明涉及具有抗碱性的新型含氟弹性体共聚物，特别适用于制备O型环，其包含：（I）VDF 47-80摩尔％-HFP和/或PAVE 16-30摩尔％氢化烯烃，其含有2 -25摩尔％-24℃ - 或 - （II）VDF 42-80摩尔％ - PAVE 16-30摩尔％ - 含有2-30摩尔％-24℃的氢化烯烃本发明涉及新的氟代共聚物共聚物 具有对碱的耐性，其包含： - （III）VDF 70-99摩尔％-HFP和/或PAVE 0-16摩尔％ - 含有1-30摩尔％-24℃的氢化烯烃 - 本发明的另一个目的 是制备上述含氟弹性体和氟塑料共聚物的方法。

    Fluoroelastomers based on vinylidene fluoride exhibiting superior resistance to organic bases
    5.
    发明授权
    Fluoroelastomers based on vinylidene fluoride exhibiting superior resistance to organic bases 失效
    基于偏氟乙烯的氟弹性体显示出优异的耐有机碱性

    公开(公告)号：US5264509A

    公开(公告)日：1993-11-23

    申请号：US15063

    申请日：1993-02-08

    申请人： Vincenzo Arcella ,  Margherita Albano ,  Giulio Brinati ,  Graziell Chiodini ,  Anna Minutillo

    发明人： Vincenzo Arcella ,  Margherita Albano ,  Giulio Brinati ,  Graziell Chiodini ,  Anna Minutillo

    IPC分类号： C08F214/22 ,  C08F214/26 ,  C08F16/24

    CPC分类号： C08F214/265 ,  C08F214/225

    摘要： Fluoroelastomeric copolymers exhibiting high resistance to bases and alcohols, as well as high mechanical properties and low-temperature resistance, comprising, in moles:4-75% of units of vinylidene fluoride;12-40% of units of hexafluoropropene and/or perfluorovinylether and/or hydropentafluoropropene and/or chlorotrifluoroethylene;2-35% of units of an olefin containing up to 4 carbon atoms;2-60% of units of tetrafluoroethylene, provided that, when the sum of the olefin units and the perfluorovinylether units is equal to or greater than 70%, such copolymers possess a molecular weight sufficiently high to exhibit good mechanical characteristics.

    摘要翻译： 显示出对碱和醇的高抗性以及高机械性能和耐低温性的氟弹性共聚物，摩尔数：4-75％的偏二氟乙烯单元; 12-40％的六氟丙烯和/或全氟乙烯基醚和/或氢五氟丙烯和/或氯三氟乙烯的单元; 2-35％含有至多4个碳原子的烯烃单元; 2-60％的四氟乙烯单元，条件是当烯烃单元和全氟乙烯基醚单元的总和等于或大于70％时，这种共聚物的分子量足够高以表现出良好的机械特性。

    Peroxide curable fluoroelastomers particularly suitable for manufacturing O-rings
    7.
    发明授权
    Peroxide curable fluoroelastomers particularly suitable for manufacturing O-rings 失效
    过氧化物可固化的含氟弹性体特别适用于制造O型圈

    公开(公告)号：US06566471B1

    公开(公告)日：2003-05-20

    申请号：US08879319

    申请日：1997-06-19

    申请人： Vincenzo Arcella ,  Giulio Brinati ,  Margherita Albano ,  Vito Tortelli

    发明人： Vincenzo Arcella ,  Giulio Brinati ,  Margherita Albano ,  Vito Tortelli

    IPC分类号： C08F21612

    CPC分类号： C08F214/18 ,  C07C17/25 ,  C07C17/275 ,  C07C21/17 ,  C07C19/07

    摘要： New fluoroelastomers are described, having iodine atoms in terminal position and monomeric units in the chain deriving from an iodinated olefin of formula: CHR═CH—Z—CH2CHR—I  (I) wherein: R is —H or —CH3; Z is a (per)fluoroalkylene radical C1-C18, linear or branched, optionally containing one or more ether oxygen atoms, or a (per)fluoropolyoxyalkylene radical. These products, upon peroxide curing, require extremely short post-curing treatments (around 30-60 minutes at 180°-230° C.) and are characterized by compression set values lower than 25% (measured on O-rings at 200° C. for 70 hours according to ASTM Standard D395 Method B).

    摘要翻译： 描述了新的含氟弹性体，其末端具有碘原子，并且衍生自下式的碘化烯烃的链中的单体单元：其中：R是-H或-CH 3; Z是直链或支链（任选地含有一个或多个醚氧原子）或（全）氟聚氧亚烷基的（全）氟亚烷基C1-C18。 过氧化物固化时，这些产品需要非常短的后固化处理（在180°-230℃下约30-60分钟），其特征在于压缩永久变形值低于25％（在200℃的O形环上测量） 根据ASTM标准D395方法B）70小时。

    Fluoroelastomers endowed with improved processability and process for preparing them
    9.
    发明授权
    Fluoroelastomers endowed with improved processability and process for preparing them 失效
    具有改进的可处理性和制备它们的方法的荧光体

    公开(公告)号：US5173553A

    公开(公告)日：1992-12-22

    申请号：US550308

    申请日：1990-07-09

    申请人： Margherita Albano ,  Giulio Brinati ,  Vincenzo Arcella ,  Enzo Giannetti

    发明人： Margherita Albano ,  Giulio Brinati ,  Vincenzo Arcella ,  Enzo Giannetti

    IPC分类号： C08F114/16 ,  C08F2/38 ,  C08F14/22 ,  C08F214/16 ,  C08F214/22 ,  C08F214/26

    CPC分类号： C08F214/26 ,  C08F214/22

    摘要： Fluoroelastomers characterized by the presence of iodine or bromine atoms at the end of the polymeric chain in an amount equal to or lower than 1 iodine or bromine atom per polymeric chain, and by a bromine content in the chain ranging from 0.05 to 2% by weight referred to the total weight of the monomeric units.Said fluoroelastomers exhibit improved characteristics of processability, particularly as regards the utilization in injection molding processes and the detaching from the molds, as well as of stability to heat.A process for preparing fluoroelastomers containing iodine or bromine atoms at the ends of the polymeric chain, in an amount equal to or lower than 1 iodine or bromine atom per polymeric chain, which process comprises polymerizing mixes of fluorinated monomers (VDF, TFE, HFP, FVE) in bulk, in suspension, in aqueous emulsion, or in solution of organic solvents by means of radical starters, in the presence of compounds capable of providing I.sup.- or Br.sup.- ions in the polymerization medium and conditions.