Fluoropolymers with improved characteristics
    1.
    发明授权
    Fluoropolymers with improved characteristics 有权
    具有改进特性的含氟聚合物

    公开(公告)号:US06610807B2

    公开(公告)日:2003-08-26

    申请号:US10190096

    申请日:2002-07-03

    IPC分类号: C08F21422

    摘要: A fluoropolymer composition is provided. The polymer comprises interpolymerized units derived from (i) tetrafluoroethylene, (ii) vinylidene fluoride, (iii) at least one ethylenically unsaturated monomer of the formula CF2═CFRf where Rf is a perfluoroalkyl or a perfluoroalkoxy of 1 to 8 carbon atoms, and (iv) a perfluorovinyl ether of the formula CF2═CF—(OCF2CF(Rf))aORf where Rf is as described in (iii), Rf is a perfluoroaliphatic, preferably a perfluoroalkyl or a perfluoroalkoxy, of 1 to 8, preferably 1 to 3, carbon atoms, and a has a value of 0 to 3.

    摘要翻译: 提供含氟聚合物组合物。 聚合物包含衍生自(i)四氟乙烯,(ii)偏二氟乙烯,(iii)至少一种式CF 2 = CFR f的烯键式不饱和单体的共聚单元,其中Rf是1至8个碳原子的全氟烷基或全氟烷氧基,和( iv)式CF 2 = CF-(OCF 2 CF(R f))aOR f的全氟乙烯基醚,其中Rf如(iii)中所述,Rf是1至8,优选1至3的全氟脂族基,优选全氟烷基或全氟烷氧基 ,碳原子,a的值为0〜3。

    Process for producing fluorelastomers
    2.
    发明授权
    Process for producing fluorelastomers 失效
    生产荧光体的方法

    公开(公告)号:US06277937B1

    公开(公告)日:2001-08-21

    申请号:US09505786

    申请日:2000-02-17

    IPC分类号: C08F21422

    摘要: Fluoroelastomers having copolymerized units of vinylidene fluoride major monomer, at least one other fluorinated major monomer, and at least one cure site monomer are prepared in an aqueous suspension polymerization process using an initiator consisting essentially of a solution of an oil soluble peroxide in a water-soluble hydrocarbon solvent.

    摘要翻译: 具有共轭单元的偏氟乙烯主要单体,至少一种其它氟化主要单体和至少一种固化位点单体的氟弹性体在水悬浮聚合方法中制备,所述引发剂主要由基于油溶性过氧化物在水溶性过氧化物中的溶液组成, 可溶性烃溶剂。

    Process for preparing electrostrictive polymers and resulting polymers and articles
    4.
    发明授权
    Process for preparing electrostrictive polymers and resulting polymers and articles 有权
    制备电致伸缩聚合物和所得聚合物和制品的方法

    公开(公告)号:US06495642B2

    公开(公告)日:2002-12-17

    申请号:US09797802

    申请日:2001-03-05

    IPC分类号: C08F21422

    CPC分类号: C08F214/22 H01L41/193

    摘要: Random copolymers including vinylidene fluoride and hexafluoropropylene that exhibit a large electrostrictive response when subjected to an electric field, articles including such polymers, and methods of preparing the polymers and articles. Electrostrictive responses greater than about 4 percent are obtainable at electric field strengths of 50 megavolts per meter.

    摘要翻译: 包括偏二氟乙烯和六氟丙烯的无规共聚物,当经受电场时表现​​出大的电致伸缩响应,包括这种聚合物的制品以及制备聚合物和制品的方法。 大于约4%的电致伸缩响应可以在50兆伏特/米的电场强度下获得。

    Fluoroelastomer, production thereof, crosslinkable composition and curing product
    5.
    发明授权
    Fluoroelastomer, production thereof, crosslinkable composition and curing product 有权
    氟弹性体,其制备,可交联组合物和固化产物

    公开(公告)号:US06380337B2

    公开(公告)日:2002-04-30

    申请号:US09745097

    申请日:2000-12-20

    IPC分类号: C08F21422

    CPC分类号: C08K5/14 C08L27/16

    摘要: A fluoroelastomer comprising constituent units derived from vinylidene fluoride (a) and constituent units derived from perfluoro(methoxypropyl vinyl ether) (b), optionally together with constituent units derived from tetrafluoroethylene (c) and/or constituent units derived from a perfluoroalkyl vinyl ether (d), wherein the constituent units (a) are contained in an amount of 65 to 85 mol %, the constituent units (b) in an amount of 0.5 to 30 mol %, the constituent units (c) in an amount of 0 to 10 mol % and the constituent units (d) in an amount of 0 to 25 mol %. The fluoroelastomer can be produced by a process comprising copolymerizing vinylidene fluoride and perfluoro(methoxypropyl vinyl ether), optionally together with tetrafluoroethylene and/or a perfluoroalkyl vinyl ether, in the presence of an iodated brominated compound represented by the general formula RBrnIm [I]. Further, there is provided a crosslinkable composition comprising the above fluoroelastomer and a peroxide crosslinking agent. Still further, there is provided a curing product produced by curing the above crosslinkable composition, and having excellent resistances to heat, cold and solvents.

    摘要翻译: 包含衍生自偏二氟乙烯(a)的构成单元和衍生自全氟(甲氧基丙基乙烯基醚)(b)的构成单元的含氟弹性体,任选地与衍生自四氟乙烯(c)的构成单元和/或源自全氟烷基乙烯基醚 d),其中构成单元(a)的含量为65〜85摩尔%,构成单元(b)的含量为0.5〜30摩尔%,构成单元(c)的含量为0〜 10摩尔%,构成单元(d)为0〜25摩尔%。 含氟弹性体可以通过在通式RBrnIm [I]表示的碘化溴化化合物的存在下,将偏二氟乙烯与全氟(甲氧基丙基乙烯基醚),任选地与四氟乙烯和/或全氟烷基乙烯基醚共聚的方法来制备。 此外,提供了包含上述含氟弹性体和过氧化物交联剂的可交联组合物。 此外,提供了通过固化上述可交联组合物并且具有优异的耐热性,耐冷性和溶剂性的固化产物。

    Semicrystalline ferroelectric fluoropolymers and process for preparing same
    6.
    发明授权
    Semicrystalline ferroelectric fluoropolymers and process for preparing same 失效
    半结晶铁电含氟聚合物及其制备方法

    公开(公告)号:US06355749B1

    公开(公告)日:2002-03-12

    申请号:US09730088

    申请日:2000-12-05

    IPC分类号: C08F21422

    CPC分类号: C08F214/22

    摘要: A new class of ferroelectric terpolymers having an exceptionally large electrostrictive response (>3%) induced by external electric field at ambient temperature comprise 50-80 mole % of vinylidene fluoride (VDF), 15-40 mole % of trifluoroethylene (TrFE) and 2-20 mole % of at least one bulky monomer, such as chlorotrifluoroethylene (CTFE) or hexafluoropropene (HFP). These semicrystalline terpolymers behave like a ferroelectric relaxor having a rapid electric field-induced mechanical response, due to a low Curie temperature (phase transition between polar and nonpolar crystalline domains at or near ambient temperature) and high dielectric constant. A combination of bulk polymerization and free radical polymerization using oxidation adducts of an organoborane as the free radical initiator may be used to prepare the terpolymers, such that the terpolymers are characterized by good processibility, high purity and uniform molecular structure.

    摘要翻译: 在环境温度下由外部电场引起的具有特别大的电致伸缩响应(> 3%)的新一类铁电三元共聚物包含50-80摩尔%的偏二氟乙烯(VDF),15-40摩尔%的三氟乙烯(TrFE)和2 -20摩尔%的至少一种大体积单体,如三氟氯乙烯(CTFE)或六氟丙烯(HFP)。 由于低居里温度(环境温度或接近环境温度的极性和非极性结晶域之间的相变)和高介电常数,这些半结晶三元共聚物的行为类似于具有快速电场诱导的机械响应的铁电弛豫。 可以使用使用作为自由基引发剂的有机硼烷的氧化加合物的本体聚合和自由基聚合的组合来制备三元共聚物,使得三元共聚物的特征在于良好的加工性,高纯度和均匀的分子结构。

    Fluoroelastomers
    7.
    发明授权
    Fluoroelastomers 有权
    氟弹性体

    公开(公告)号:US06759494B2

    公开(公告)日:2004-07-06

    申请号:US10283166

    申请日:2002-10-30

    IPC分类号: C08F21422

    CPC分类号: C08F214/222 C08F214/262

    摘要: Curable fluoroelastomers comprising monomeric units formed by a triazine iodinated derivative having general formula: wherein Y′ is independently H, Cl, F, CH3, or CF3, m′ and t′ are 0 or 1, and m′+t′=0 or 1, preferably m′+t′=0; p′ is an integer and is equal to 1 when t′=1, or p′=0; X′ is independently H, Cl, F, alkyl or perfluoroalkyl C1-C3, preferably F; n′ is an integer between 2 and 20, preferably between 4 and 12, more preferably between 4 and 8.

    摘要翻译: 包含由具有以下通式的三嗪碘化衍生物形成的单体单元的固化含氟弹性体:其中Y'独立地为H,Cl,F,CH 3或CF 3,m'和t'为0或1,m'+ t'= 0或 1,优选m'+ t'= 0; p'是一个整数,当t'= 1或p'= 0时,它等于1; X'独立地是H,Cl,F,烷基或全氟烷基C1-C3,优选F; n'为2〜20,优选为4〜12,更优选为4〜8的整数。

    Peroxide curable fluoroelastomers
    8.
    发明授权
    Peroxide curable fluoroelastomers 有权
    过氧化物固化的含氟弹性体

    公开(公告)号:US06646077B1

    公开(公告)日:2003-11-11

    申请号:US10193435

    申请日:2002-07-11

    IPC分类号: C08F21422

    CPC分类号: C08F214/26 C08F214/22

    摘要: Peroxide curable fluoroelastomers having copolymerized units of vinylidene fluoride or tetrafluoroethylene major monomer, at least one other fluorinated major monomer, a cure site monomer having the general formula CH2═CH—(CF2)nI, where n is an integer between 2 and 8, and iodine bound at the terminal positions of polymer chains, process well and have excellent tensile properties.

    摘要翻译: 具有偏二氟乙烯或四氟乙烯主要单体,至少一种其它氟化主要单体,具有通式CH 2 = CH-(CF 2)n I的固化部位单体的共价单元的过氧化物可固化的含氟弹性体,其中n是2和8之间的整数,以及 碘在聚合物链的末端位置结合,工艺良好,具有优异的拉伸性能。

    Process for producing fluorinated copolymer, fluorinated copolymer, crosslinkable composition containing same and sealant
    10.
    发明授权
    Process for producing fluorinated copolymer, fluorinated copolymer, crosslinkable composition containing same and sealant 失效
    含氟共聚物,含氟共聚物,含有它们的可交联组合物和密封剂的制备方法

    公开(公告)号:US06281312B1

    公开(公告)日:2001-08-28

    申请号:US09346506

    申请日:1999-07-01

    IPC分类号: C08F21422

    摘要: Vinylidene fluoride and chlorotrifluoroethylene are copolymerized in the presence of a compound represented by the general formula I: InBrmR  (I) wherein R represents a fluorohydrocarbon group, a chlorofluorohydrocarbon group, a chlorohydrocarbon group or a hydrocarbon group, and n is 0, 1 or 2 and m is 0, 1 or 2 provided that n+m≧2. This provides a process for producing a fluorinated copolymer which enables providing a fluorinated copolymer crosslinking product having mechanical properties satisfactory for practical use as sealants even if no inorganic additive is added thereto.

    摘要翻译: 在由通式I表示的化合物的存在下,将二氟乙烯和氯三氟乙烯共聚:其中R表示氟代烃基,氯氟烃基,氯代烃基或烃基,n为0,1或2,m为0 ,1或2,只要n + m> = 2。 这提供了一种制备含氟共聚物的方法,其即使没有添加无机添加剂,也能够提供具有令人满意的作为密封剂的机械性能的含氟共聚物交联产物。