METHOD FOR THE MANUFACTURE OF FLUORINATED POLYMERS AND POLYMERS OBTAINABLE THEREFROM

    公开(公告)号:US20190062496A1

    公开(公告)日:2019-02-28

    申请号:US16079090

    申请日:2017-02-20

    IPC分类号: C08G65/00 C08G65/334

    摘要: A method for the manufacture of fluorinated polymers and polymers obtainable therefrom are herein disclosed. The method envisages the reaction of a) first reagent [reagent (R1)] which is an alcohol selected from a (per)fluoropolyether (PFPE) alcohol a fluoroalkylene diol and a mixture thereof; b) a second reagent [reagent (R2)] which is a sulfonic ester of a PFPE, a sulfonic diester of a fluoroalkylene diol or a mixture thereof and, optionally, c) a third reagent which is a mono-functional (per)haloalkyl alcohol or a sulfonic ester thereof in the presence of an organic or inorganic base. At least reagent (R1) is a PFPE alcohol (A) or at least reagent (R2) is a PFPE sulfonic ester (B) and the overall equivalents of alcohols are the same as the overall equivalents of sulfonic esters. The method allows to obtain in a convenient way non-functional polymers comprising at least a PFPE segment and having high molecular weight.

    FLUOROELASTOMER COMPOSITION
    7.
    发明申请

    公开(公告)号:US20220033578A1

    公开(公告)日:2022-02-03

    申请号:US17280321

    申请日:2019-09-27

    IPC分类号: C08G65/00 C08K5/18

    摘要: The invention pertains to a fluoroelastomer composition including at least a nitrile-containing (per)fluoropolyether compound and at least one bis-amino(thio)phenol compound of formula (I), wherein: A is —SO2—, —O—, —C(O)— or divalent hydrocarbon groups of 1 to 10 carbon atoms, E is independently oxygen or sulphur and —NH2 groups are in ortho with respect to EH groups; to a process for manufacturing a (per)fluoropolyether-based thermoset and to a (per)fluoropolyether-based thermoset obtained therefrom.