Curable composition of fluoroelastomers
    1.
    发明授权
    Curable composition of fluoroelastomers 失效
    含氟弹性体的固化组合物

    公开(公告)号:US6005054A

    公开(公告)日:1999-12-21

    申请号:US848660

    申请日:1997-04-29

    CPC分类号: C08L27/12 C08L27/16 C08L71/00

    摘要: Use of additives of the classes of mono- and/or di-hydroxypolyfluoroethers comprising the fluoropolyoxyalkylenic repeating units chosen from the following ones: (C.sub.3 F.sub.6 O); (CFXO) wherein X=F, CF.sub.3 ; (CH.sub.2 CF.sub.2 CF.sub.2 O); (CF.sub.2 (CF.sub.2).sub.z CF.sub.2 O) wherein z is an integer equal to 1 or 2; (C.sub.2 F.sub.4 O), in curable compositions of fluoroelastomers to improve the coefficient of friction without lowering the adhesion with bonding agents to metal reinforcements.

    摘要翻译: 使用包含选自以下的氟代聚氧亚烷基重复单元的单 - 和/或二 - 羟基多氟醚类的添加剂:(C 3 F 6 O); (CFXO)其中X = F,CF 3; (CH 2 CF 2 CF 2 O) (CF 2(CF 2)z CF 2 O)其中z是等于1或2的整数; (C2F4O),用于改善摩擦系数而不降低与粘合剂对金属增强材料的粘合性的含氟弹性体的可固化组合物。

    Curable fluoroelastomer compositions
    2.
    发明授权
    Curable fluoroelastomer compositions 有权
    可固化的含氟弹性体组合物

    公开(公告)号:US06448319B1

    公开(公告)日:2002-09-10

    申请号:US09481698

    申请日:2000-01-12

    IPC分类号: C08K506

    摘要: Use in curable fluoroelastomer compositions of additives having polyacetal structure of general formula: HOCH2—[Rf—CH2O(CH2O)cCH2]t—Rf—CH2OH  (I) wherein: c=1-10, preferably 1-3; t=0.5-20. Rf=poly-fluorooxyalkylenic chain, having number average molecular weight ({overscore (M)}n) in the range 500-2,500, preferably 1,000-2,000; the number average molecular weight of the formula (I) additive is in the range 3,000-15,000, preferably 3,000-10,000.

    摘要翻译: 在具有以下通式的聚缩醛结构的添加剂的可固化含氟弹性体组合物中使用:其中:c = 1-10,优选1-3; t = 0.5-20.Rf =数均分子量({overscore(M)} n)在500-2,500,优选1,000-2,000范围内的聚氟氧烷基链;式(I)的数均分子量 添加剂在3,000-15,000,优选3,000-10,000的范围内。

    Fluorine-containing compounds having polyacetalic structure, and process
for preparing them
    3.
    发明授权
    Fluorine-containing compounds having polyacetalic structure, and process for preparing them 失效
    具有聚缩醛结构的含氟化合物及其制备方法

    公开(公告)号:US5637671A

    公开(公告)日:1997-06-10

    申请号:US542443

    申请日:1995-10-12

    摘要: 1) Disclosed herein are new fluorine-containing compounds having polyacetalic structure, of general formula:[Rf.sub.m --CH.sub.2 O(CH.sub.2 O).sub.c --CH.sub.2 --.brket close-st..sub.n (I)where:Rf=a perfluorooxyalkylene chain having Mn from 500 to 5,000;m=4-25;c=1-10;n=2-100.2) A process for preparing them which comprises carrying out the polycondensation of diols having formula:HORfOH (II)with formaldehyde, in mass or in the presence of solvents, in an acid medium. The compounds of formula (I) can be oligomeric compounds (polymerization degree x.sub.n from 2 to about 20) or polymeric compounds (x.sub.n from about 20 to about 100). They exhibit a high stability to heat and to chemical agents, and Tg values slightly different from the ones of the diols utilized for preparing them.

    摘要翻译: 1)本文公开了具有以下通式的具有聚缩醛结构的新的含氟化合物:[Rfm-CH2O(CH2O)c-CH2- + 548n(I))其中:Rf =具有+ E的全氟氧化烯链,ovs M + EE n从500到5,000; m = 4-25; c = 1-10; n = 2-100。 2)一种制备它们的方法,其包括在酸性介质中,以质量或在溶剂存在下,将具有式:HORFOH(II)的二醇与甲醛缩聚。 式(I)化合物可以是低聚化合物(聚合度+ E,ovs x + EE n从2至约20)或聚合化合物(+ E,ovs x + EE n约20至约100)。 它们对热和化学试剂表现出高稳定性,并且Tg值与用于制备它们的二醇的那些略有不同。

    Fluorine-containing compounds having polyacetalic structure, and process
for preparing them
    4.
    发明授权
    Fluorine-containing compounds having polyacetalic structure, and process for preparing them 失效
    具有聚缩醛结构的含氟化合物及其制备方法

    公开(公告)号:US5476918A

    公开(公告)日:1995-12-19

    申请号:US58014

    申请日:1993-05-05

    摘要: 1) New fluorine-containing compounds having polyacetalic structure, of general formula:(I)[Rf.sub.m --CH.sub.2 O(CH.sub.2 O).sub.c --CH.sub.2 ].sub.nwhere:Rf=a perfluorooxyalkylene chain having Mn from 500 to 5,000;m=4-25;c=1-10;n=2-100.2) A process for preparing them, which comprises carrying out the polycondensation of diols having formula:(II) HORfOHwith formaldehyde, in mass or in the presence of solvents, in an acid medium. The compounds of formula (I) can be oligomeric compounds (polymerization degree x.sub.n from 2 to about 20) or polymeric compounds (x.sub.n from about 20 to about 100). They exhibit a high stability to heat and to chemical agents, and Tg values slightly different from the ones of the diols utilized for preparing them.

    摘要翻译: 1)具有通式:(I)[Rfm-CH 2 O(CH 2 O)c -CH 2] n]的具有聚缩醛结构的新的含氟化合物,其中:Rf =具有500-5,000的<上升&Mn的全氟氧化烯链; m = 4〜25; c = 1-10; n = 2-100。 2)一种制备它们的方法,其包括在酸性介质中以质量或在溶剂存在下,使式(II)HORFOH与甲醛进行缩聚反应。 式(I)的化合物可以是低聚化合物(聚合度和上限,从2到约20)或聚合化合物(和从约20到约100)。 它们对热和化学试剂表现出高稳定性,并且Tg值与用于制备它们的二醇的那些略有不同。