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    Peroxide curable fluoroelastomers particularly suitable for manufacturing O-rings
    4.
    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
    6.
    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.

    Polyvinylidenefluoride having high mechanical properties and high thermochemical stability and the preparation process thereof
    8.
    发明授权
    Polyvinylidenefluoride having high mechanical properties and high thermochemical stability and the preparation process thereof 失效
    具有高机械性能和高热稳定性的聚偏二氟乙烯及其制备方法

    公开(公告)号：US5583190A

    公开(公告)日：1996-12-10

    申请号：US534671

    申请日：1995-09-27

    申请人： Giulio Brinati ,  Vincenzo Arcella ,  Margherita Albano

    发明人： Giulio Brinati ,  Vincenzo Arcella ,  Margherita Albano

    IPC分类号： C08F14/22 ,  C08F4/32 ,  C08F114/22

    CPC分类号： C08F114/22

    摘要： A polyvinylidenefluoride (PVDF) having high mechanical properties both at room temperature and at high temperatures, having very good processability and high thermochemical resistance to dehydrofluorination, is prepared by means of a polymerization process of vinylidenefluoride in aqueous emulsion at a temperature comprised between 95.degree. and 120.degree. C., in the presence of a chain transfer agent. In this way it is possible to obtain, using non-hazardous peroxidic initiators (for instance diterbutylperoxide), a PVDF particularly suitable for applications where high mechanical and thermochemical resistance properties are required, such as for instance the manufacture of articles for chemical industry (pipes, valves, fittings, tanks, heat exchangers, membranes, flanges, etc.).

    摘要翻译： 在室温和高温下具有高机械性能的聚偏二氟乙烯（PVDF），具有非常好的加工性能和对脱氟化氢的高耐热化学性能，是通过聚偏二氟乙烯在水乳液中的温度在95°和 120℃，在链转移剂存在下。 以这种方式，可以使用非危险的过氧化物引发剂（例如二叔丁基过氧化物）获得特别适用于需要高机械和耐热化学性能的应用的PVDF，例如用于化学工业的制品（管道 ，阀门，配件，罐，热交换器，膜，法兰等）。

    Fluoroelastomers based on vinylidene fluoride exhibiting superior resistance to organic bases
    9.
    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。

    Curable fluoroelastomers
    10.
    发明授权
    Curable fluoroelastomers 有权
    固化含氟弹性体

    公开(公告)号：US07705083B2

    公开(公告)日：2010-04-27

    申请号：US11114098

    申请日：2005-04-26

    申请人： Milena Stanga ,  Margherita Albano ,  Vincenzo Arcella

    发明人： Milena Stanga ,  Margherita Albano ,  Vincenzo Arcella

    IPC分类号： C08F8/30 ,  C09K3/00 ,  C08F8/00 ,  C08F214/18 ,  C08F8/08

    CPC分类号： C08K5/0025 ,  C08K3/01 ,  C08K3/24 ,  C08L27/16

    摘要： Ionically curable fluoroelastomers based on vinylidenfluoride (VDF) comprising: a) 100 parts by weight of fluoroelastomer based on vinylidenfluoride (VDF) substantially polar end groups free; b) from 0.1 to 0.35 phr of accelerating agent; c) from 1 to 15 phr of curing agent; d) from 2 to 20 phr of one or more inorganic acid acceptors, preferably bivalent metal oxides; e) from 0 to 3 phr, preferably from 0 to 1.5 phr of one or more basic compounds preferably hydroxides of bivalent metals or of weak acid metal salts; f) from 0 to 80 phr of reinforcing fillers; g) from 0 to 3 phr of coadjuvants of processability.

    摘要翻译： 基于乙烯基氟化物（VDF）的可离子固化的含氟弹性体包括：a）100重量份基于无极性基团的基于偏氟乙烯（VDF）的氟弹性体; b）0.1至0.35phr的促进剂; c）1〜15phr固化剂; d）2至20phr的一种或多种无机酸受体，优选二价金属氧化物; e）0-3phr，优选0-1.5phr一种或多种碱性化合物，优选二价金属或弱酸性金属盐的氢氧化物; f）0至80phr的增强填料; g）0-3phr可加工性的佐剂。