Nitrile group-containing fluoroelastomer and preparation process of same
    4.
    发明授权
    Nitrile group-containing fluoroelastomer and preparation process of same 有权
    含腈基的含氟弹性体及其制备方法

    公开(公告)号:US06841625B2

    公开(公告)日:2005-01-11

    申请号:US10301726

    申请日:2002-11-22

    IPC分类号: C08F8/00 C08F8/30 C08F8/18

    CPC分类号: C08F8/00 C08F8/30 C08F214/18

    摘要: To provide a solid fluoroelastomer having nitrile group at the, end which gives a crosslinked product being excellent in heat resistance, solvent resistance, chemical resistance, compression set and cleanliness, and an economical process for preparation thereof. The process for preparing a nitrile group-containing fluoroelastomer by converting amide group contained in a polymer molecular chain of a solid fluoroelastomer into nitrile group in the presence of a dehydrating agent.

    摘要翻译: 为了提供具有优异的耐热性,耐溶剂性,耐化学性,压缩永久变形和清洁性的交联产物,以及其制备的经济方法,提供了一种具有腈基的固体含氟弹性体。 通过在脱水剂的存在下将固体含氟弹性体的聚合物分子链中所含的酰胺基团转化成腈基来制备含腈基的含氟弹性体的方法。

    Method of chlorination of end of fluorine-containing compound
    5.
    发明授权
    Method of chlorination of end of fluorine-containing compound 失效
    含氟化合物末端氯化方法

    公开(公告)号:US06657094B1

    公开(公告)日:2003-12-02

    申请号:US10088736

    申请日:2002-03-22

    IPC分类号: C07C1720

    摘要: There is provided a method of end-chlorination of a fluorine-containing compound which can easily provide a fluorine-containing monomer having a functional group such as nitrile group at relatively low cost. The method of chlorinating an end of a fluorine-containing compound having iodine atom at an end thereof comprises reacting a fluorine-containing organic compound having iodine atom at a molecular end thereof and represented by the formula (I): RfCX2I  (I) wherein Rf is an organic residue having fluorine atom, X is hydrogen atom or chlorine atom, with a chlorine gas at a temperature of from 150° C. to 180° C. under irradiation with light to cleave the C—I bond and replace iodine atom with chlorine atom.

    摘要翻译: 提供了一种可以容易地提供具有诸如腈基等官能团的含氟单体的含氟化合物的端氯化方法,其成本较低。将含氟化合物的末端氯化为具有 在其末端的碘原子包括在其分子端具有由式(I)表示的具有碘原子的含氟有机化合物:其中Rf是具有氟原子的有机残基,X是氢原子或氯原子,与 在150℃至180℃的温度下,用光照射氯气以切割CI键并用氯原子代替碘原子。

    Nitrile group-containing fluoroelastomer and preparation process of same
    6.
    发明授权
    Nitrile group-containing fluoroelastomer and preparation process of same 有权
    含腈基的含氟弹性体及其制备方法

    公开(公告)号:US06518366B1

    公开(公告)日:2003-02-11

    申请号:US09937901

    申请日:2001-10-01

    IPC分类号: C08F818

    CPC分类号: C08F8/00 C08F8/30 C08F214/18

    摘要: To provide a solid fluoroelastomer having nitrile group at the end which gives a crosslinked product being excellent in heat resistance, solvent resistance, chemical resistance, compression set and cleanliness, and an economical process for preparation thereof. The process for preparing a nitrile group-containing fluoroelastomer by converting amide group contained in a polymer molecular chain of a solid fluoroelastomer into nitrile group in the presence of a dehydrating agent.

    摘要翻译: 为了提供在末端具有腈基的固体含氟弹性体,其赋予耐热性,耐溶剂性,耐化学性,压缩永久变形和清洁性优异的交联产物及其制备的经济方法。 通过在脱水剂的存在下将固体含氟弹性体的聚合物分子链中所含的酰胺基团转化成腈基来制备含腈基的含氟弹性体的方法。

    Process for preparing vulcanizable fluorine-containing elastomer
    7.
    发明申请
    Process for preparing vulcanizable fluorine-containing elastomer 有权
    制备可硫化含氟弹性体的方法

    公开(公告)号:US20070299207A1

    公开(公告)日:2007-12-27

    申请号:US11892702

    申请日:2007-08-27

    IPC分类号: C08L27/14

    摘要: The present invention provides a process for preparing a fluorine-containing elastomer in a high productivity comparable to that of non-iodine transfer polymerization process by carrying out an iodine transfer polymerization at high pressure. The present invention also provides a fluorine-containing elastomer prepared by this process, and fluorine-containing molded articles. The process is a batch copolymerization process conducted under conditions that the reduced temperature of the critical constant is at least 0.95 and the reduced pressure of the critical constant is at least 0.80 wherein the reduced temperature and the reduced pressure are calculated using the Peng-Robinson formula from the critical temperature, the critical pressure and the composition ratio of each of the monomers in the gaseous phase in a reaction vessel, in which ethylenically unsaturated compounds containing at least one fluoroolefine are copolymerized in the presence of a compound having the formula: Rf1·Ix wherein Rf1 is a saturated or unsaturated fluorohydrocarbon or chlorofluorohydrocarbon group having 1 to 16 carbon atoms, and x is the number of bonds of Rf1 and an integer of 1 to 4.

    摘要翻译: 本发明提供了一种通过在高压下进行碘转移聚合制备与非碘转移聚合方法相当的高生产率的含氟弹性体的方法。 本发明还提供了通过该方法制备的含氟弹性体和含氟成型体。 该方法是在临界常数降低至少为0.95,临界常数降低至少为0.80的条件下进行的间歇共聚方法,其中降低的温度和减压是使用Peng-Robinson公式 在临界温度下,在具有下式的化合物的存在下,在反应容器中的气相中的每种单体的临界压力和组成比共聚,其中含有至少一个氟烯烃的烯键式不饱和化合物在具有下式的化合物的存在下共聚: 其中R 1是饱和或不饱和的氟代烃或其中R 1,R 2,R 3,R 4, 具有1至16个碳原子的氯氟烃基,x是R 1和...的整数1至4的整数。

    Process for preparing fluorine-containing polymer
    8.
    发明授权
    Process for preparing fluorine-containing polymer 有权
    含氟聚合物的制备方法

    公开(公告)号:US07345124B2

    公开(公告)日:2008-03-18

    申请号:US10521807

    申请日:2003-07-23

    IPC分类号: C08F14/18

    摘要: The present invention provides a process for preparing a fluorine-containing polymer having few branched chains and little weight change in high temperatures, which is a new process wherein composition distribution substantially does not occur. The fluorine-containing polymer is prepared by a batch copolymerization process conducted under conditions of reduced temperature of at least 0.95 and reduced pressure of at least 0.80 of the critical constant calculated from critical temperature, critical pressure and composition ratio of each monomer in the gaseous phase of the reaction vessel using the Peng-Robinson formula.

    摘要翻译: 本发明提供一种制备具有很少支链和在高温下重量变化小的含氟聚合物的方法,这是其中组合物分布基本上不发生的新方法。 含氟聚合物是通过间歇共聚方法制备的,所述间歇共聚方法是在降低至少0.95的温度和至少0.80的关键常数的减压条件下进行的,该临界常数由气相中各单体的临界温度,临界压力和组成比计算 的反应容器使用Peng-Robinson公式。

    Peroxide-Vulcanizable Fluorine-Containing Elastomer Composition
    9.
    发明申请
    Peroxide-Vulcanizable Fluorine-Containing Elastomer Composition 审中-公开
    过氧化物可硫化含氟弹性体组合物

    公开(公告)号:US20080306196A1

    公开(公告)日:2008-12-11

    申请号:US11658255

    申请日:2005-07-28

    IPC分类号: C08K5/14

    摘要: The present invention provides a peroxide-vulcanizable fluorine-containing elastomer composition which is remarkably improved in fluidity and thereby exhibits improved processability, though conventional fluorine-containing elastomer compositions could be molded only by a molding process having a problem in its productivity, for instance, compression molding or transfer molding which has been used so far as a general molding process. The present invention further provides a molded article obtained by vulcanizing the composition. The present invention also provides a fluorine-containing elastomer composition in which a large amount of a filler can be blended. Specifically, the present invention relates to the fluorine-containing elastomer composition comprising a fluorine-containing elastomer (A) composed of a structural unit derived from vinylidene fluoride and/or a structural unit of tetrafluoroethylene and a structural unit derived from at least one other monomer, and having (a) a number average molecular weight (Mn) of 30,000 to 70,000 g/mol, and (b) an iodine content of 0.3 to 1.0% by weight and an organoperoxide vulcanizing agent (B).

    摘要翻译: 本发明提供了一种过氧化物可硫化的含氟弹性体组合物,其流动性显着提高,从而表现出改进的加工性能,但是常规的含氟弹性体组合物可以仅通过其生产率问题的模制方法模制, 压缩成型或传递模塑,其已经被用于一般的模塑工艺。 本发明还提供通过硫化该组合物获得的模制品。 本发明还提供了可以混合大量填料的含氟弹性体组合物。 具体地说,本发明涉及包含由偏氟乙烯衍生的结构单元和/或四氟乙烯的结构单元构成的含氟弹性体(A)和来自至少一种其它单体的结构单元的含氟弹性体组合物 (a)数均分子量(Mn)为30,000〜70,000g / mol,(b)碘含量为0.3〜1.0重量%和有机过氧化物硫化剂(B)。

    Method for producing vulcanizable fluorine-containing elastomer
    10.
    发明申请
    Method for producing vulcanizable fluorine-containing elastomer 有权
    可硫化含氟弹性体的制造方法

    公开(公告)号:US20060052548A1

    公开(公告)日:2006-03-09

    申请号:US10542545

    申请日:2004-01-22

    IPC分类号: C08C19/20

    摘要: The present invention provides a process for preparing a fluorine-containing elastomer in a high productivity comparable to that of non-iodine transfer polymerization process by carrying out an iodine transfer polymerization at high pressure. The present invention also provides a fluorine-containing elastomer prepared by this process, and fluorine-containing molded articles. The process is a batch copolymerization process conducted under conditions that the reduced temperature of the critical constant is at least 0.95 and the reduced pressure of the critical constant is at least 0.80 wherein the reduced temperature and the reduced pressure are calculated using the Peng-Robinson formula from the critical temperature, the critical pressure and the composition ratio of each of the monomers in the gaseous phase in a reaction vessel, in which ethylenically unsaturated compounds containing at least one fluoroolefine are copolymerized in the presence of a compound having the formula: Rf1·Ix wherein Rf1 is a saturated or unsaturated fluorohydrocarbon or chlorofluorohydrocarbon group having 1 to 16 carbon atoms, and x is the number of bonds of Rf1 and an integer of 1 to 4.

    摘要翻译: 本发明提供了一种通过在高压下进行碘转移聚合制备与非碘转移聚合方法相当的高生产率的含氟弹性体的方法。 本发明还提供了通过该方法制备的含氟弹性体和含氟成型体。 该方法是在临界常数降低至少为0.95,临界常数降低至少为0.80的条件下进行的间歇共聚方法,其中降低的温度和减压是使用Peng-Robinson公式 从临界温度,临界压力和反应容器中气相中各单体的组成比