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49 条记录 (耗时 0.019 秒)

    Covulacanizable compositions of fluorelastomers having an improved chemical stability
    15.
    发明授权
    Covulacanizable compositions of fluorelastomers having an improved chemical stability 失效
    具有改善的化学稳定性的荧光体的可共聚组合物

    公开(公告)号：US5177148A

    公开(公告)日：1993-01-05

    申请号：US572323

    申请日：1990-08-23

    申请人： Vincenzo Arcella ,  Giulio Tommasi ,  Giulio Brinati ,  Gianna Cirillo ,  Fabio Costanzi

    发明人： Vincenzo Arcella ,  Giulio Tommasi ,  Giulio Brinati ,  Gianna Cirillo ,  Fabio Costanzi

    IPC分类号： C08F2/38 ,  C08K5/00 ,  C08K5/19 ,  C08K5/50

    CPC分类号： C08K5/19 ,  C08F2/38 ,  C08K5/00 ,  C08K5/50

    摘要： Covulcanizable compositions comprising (A) 55-100% by weight of an elastomeric copolymer of vinylidene fluoride with perfluoropropene optionally tetrafluoroethylene and containing from 0.001 to 2% by weight of bromine; (B) 0-45% by weight of a tetrafluoroethylene and propylene copolymer; (C) 0.7-2.5 parts for 100 parts of mix (A)+(B) of a bisphenol compound; (D) 0.3-1.5 parts for 100 parts of mix (A)+(B) of an organic guaternary compound of ammonium, phosphonium or aminophosphonium; (E) 0.4-5 parts for 100 parts of mix (A)+(B) of an organic peroxide; (F) 1-5% by weight of (A)+(B) of a peroxide cross-linking coagent.

    摘要翻译： 可共聚组合物，其包含（A）55-100重量％的偏二氟乙烯与全氟丙烯任选的四氟乙烯的弹性体共聚物并含有0.001至2重量％的溴; （B）0-45重量％的四氟乙烯和丙烯共聚物; （C）100份双酚化合物的混合物（A）+（B）为0.7-2.5份; （D）100份的混合物（A）+（B）为铵，鏻或氨基鏻的有机季铵化合物的0.3-1.5份; （E）100份有机过氧化物的混合物（A）+（B）0.4-5份; （F）1-5重量％的（A）+（B）过氧化物交联助剂。

    VDF polymerization process
    16.
    发明授权
    VDF polymerization process 失效
    VDF聚合工艺

    公开(公告)号：US07122608B1

    公开(公告)日：2006-10-17

    申请号：US08885770

    申请日：1997-06-30

    申请人： Giulio Brinati ,  Paolo Lazzari ,  Vincenzo Arcella

    发明人： Giulio Brinati ,  Paolo Lazzari ,  Vincenzo Arcella

    IPC分类号： C08F2/00

    CPC分类号： C08F14/22 ,  C08F2/16

    摘要： VDF polymerization process, optionally modified with small amounts of one or more fluoro-containing comonomers, carried out in the presence of a microemulsion comprising a (per) fluoropolyether having neutral end groups, having number average molecular weight between 400 and 3000, and a surfactant based on perfluoropolyethers with salified acid end groups, said surfactant having a number molecular weight Mn comprised between 400–600 and having a distribution of molecular weights such that fractions having a number average molecular weight higher than 700 are not present, or are in amount less than 5% by weight.

    摘要翻译： VDF聚合方法，任选地用少量一种或多种含氟共聚单体进行改性，所述共聚单体在包含数均分子量在400和3000之间的具有中性端基的（全）氟聚醚的微乳液和表面活性剂 基于具有成盐酸端基的全氟聚醚，所述表面活性剂的数均分子量Mn为400-600，分子量分布为数均分子量高于700的部分不存在，或少量 超过5重量％。

    Process for preparing vinylidenefluoride polymers
    17.
    发明授权
    Process for preparing vinylidenefluoride polymers 失效
    制备偏二氟乙烯聚合物的方法

    公开(公告)号：US5473030A

    公开(公告)日：1995-12-05

    申请号：US345769

    申请日：1994-11-22

    申请人： Vincenzo Arcella ,  Bradley Kent ,  Patrizia Maccone ,  Giulio Brinati

    发明人： Vincenzo Arcella ,  Bradley Kent ,  Patrizia Maccone ,  Giulio Brinati

    IPC分类号： C08F2/16 ,  C08F2/22 ,  C08F2/38 ,  C08F14/22 ,  C08F114/22 ,  C08F2/00

    CPC分类号： C08F14/22 ,  C08F2438/01

    摘要： Object of the present invention is a process for preparing vinylidenefluoride (VDF) polymers which comprises polymerizing VDF, optionally in association with other fluorinated oiefins in an aqueous medium in the presence of a radical initiator and of 1,1,1-trifluoro-2,2-dichloroethane (HCFC-123) as chain transfer agent.A final product with very good colour characteristics (appearance), substantially devoid of discoloration effects at high temperatures, is so obtained.

    摘要翻译： 本发明的目的是制备偏二氟乙烯（VDF）聚合物的方法，其包括在自由基引发剂和1,1,1-三氟-2,2-二氯乙烯存在的条件下，在水性介质中任选与其它氟化油相结合的聚合VDF， 作为链转移剂的2-二氯乙烷（HCFC-123）。 具有非常好的颜色特性（外观）的最终产品，在高温下基本上没有变色效果。

    Fluoroelastomeric and fluoroplastomeric copolymers having a high resistance to bases
    18.
    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。