Perfluoroalkyleneethertriazine oligomer and process for producing the
same
    1.
    发明授权
    Perfluoroalkyleneethertriazine oligomer and process for producing the same 失效
    全氟亚烷基醚三嗪低聚物及其制备方法

    公开(公告)号:US5942598A

    公开(公告)日:1999-08-24

    申请号:US774151

    申请日:1996-12-26

    摘要: Perfluoroalkyleneethertriazine oligomer obtained by reacting a dinitrile compound NC-Rf.sup.0 --CN, where Rf.sup.0 is --(CFXOCF.sub.2).sub.a (CF.sub.2).sub.b (CF.sub.2 OCFX).sub.c --, where X is a fluorine atom or a CF.sub.3 group, a is an integer of 1 to 5, b is an integer of 1 to 2 and c is an integer of 1 to 5, or Rf.sup.0 is --CF.sub.2 O(CF.sub.2 O).sub.d CF.sub.2 --, where d is an integer of 1 to 8 with ammonia, further reacting the resulting diamizine compound with a dinitrile compound NC-Rf.sup.1 --CN, where Rf.sup.1 has the same meaning as that for Rf.sup.0 or Rf.sup.1 is a perfluoroalkylene group having 4 to 8 carbon atoms thereby obtaining a perfluoroalkyleneetherpolyimidoylamizine oligomer, then reacting the resulting oligomer with a perfluoronitrile compound Rf.sup.2 CN, where Rf.sup.2 is CF.sub.3 (OCF.sub.2).sub.e --, where e is an integer of 3 to 10, and then subjecting the resulting terminal-treated oligomer to a ring-closing reaction with a perfluoroacylating agent Rf.sup.3 COY, where Rf.sup.3 is Rf(OCFX).sub.f --, where Rf is a perfluoroalkyl group having 1 to 8 carbon atoms, X is a fluorine atom or a CF.sub.3 group, and f is an integer of 3 to 10, and n is 0.01 to 10 and m is 0.01 to 20. The resulting perfluoroalkyleneethertriazine oligomer has a good resistance to oxidation in the presence of a metal at a high temperature, and can improve the heat resistance of a perfluoropolyetherpolytetrafluoroethylene powder-based grease, when added thereto.

    摘要翻译: 通过使二腈化合物NC-Rf0-CN,其中Rf0为 - (CFXOCF2)a(CF2)b(CF2OCFX)c-,其中X为氟原子或CF3基团,得到的全氟亚烷基醚三嗪低聚物,a为1〜 5,b为1〜2的整数,c为1〜5的整数,或Rf0为-CF2O(CF2O)dCF2-,其中d为1〜8的整数,与氨进一步反应,得到的二胺化合物与 二腈化合物NC-Rf1-CN,其中Rf1具有与Rf0或Rf1相同的含义,为具有4-8个碳原子的全氟亚烷基,从而得到全氟亚烷基醚聚亚氨基亚胺低聚物,然后使所得低聚物与全氟腈化合物Rf2CN反应,其中Rf2 是CF 3(OCF 2)e - ,其中e是3至10的整数,然后使所得末端处理的低聚物与全氟酰基化试剂Rf 3 COY进行闭环反应,其中Rf 3为Rf(OCFX)f-,其中 Rf为碳原子数为1〜8的全氟烷基,X为氟原子或CF 3基,f为氟原子 为3〜10的整数,n为0.01〜10,m为0.01〜20。所得的全氟亚烷基醚三嗪低聚物在高温下在金属存在下具有良好的耐氧化性,可以提高耐热性 全氟聚醚聚四氟乙烯粉末状润滑脂。