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    1,2,4-Oxadiazole elastomers
    2.
    发明授权
    1,2,4-Oxadiazole elastomers 失效
    1,2,4-恶二唑弹性体

    公开(公告)号：US4245085A

    公开(公告)日：1981-01-13

    申请号：US28301

    申请日：1979-04-09

    申请人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Robert W. Rosser ,  Ibrahim M. Shalhoub ,  Hanoi Kwong

    发明人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Robert W. Rosser ,  Ibrahim M. Shalhoub ,  Hanoi Kwong

    IPC分类号： C08G73/08

    CPC分类号： C08G73/08

    摘要： New crosslinked 1,2,4-oxadiazole elastomers have been prepared by thermally condensing (a) monomer having the formula H.sub.2 N(HON)C-R-Q, wherein Q is a triazine ring-forming group such as nitrile or amidine, or (b) a mixture of said monomer with R[C(NOH)NH.sub.2 ].sub.2, with R in these formulas standing for a bivalent organic radical having the formula--(CX.sub.2).sub.p --, or --CFY(OCF.sub.2 CFY).sub.m O(CX.sub.2).sub.p O(CFYCF.sub.2 O).sub.n CFY--wherein X is fluorine or hydrogen, Y is fluorine or trifluoromethyl, p ranges from 1 to 18, and m+n ranges from 2 to 7. In the monomer charge, the overall proportions of amidoxime groups to triazine ring-forming groups varies depending on the extent of crosslinking desired in the final polymer.The heat and chemical resistant elastomers disclosed can serve, for instance, as adhesives, caulking compounds, channel sealants, fuel tank liners.

    摘要翻译： 通过将（a）具有式H2N（HON）CRQ的单体（其中Q是三嗪环形成基团如腈或脒）或（b）混合物（a）混合，制备新的交联的1,2,4-恶二唑弹性体 的所述单体与R [C（NOH）NH 2] 2反应，其中这些式中的R代表具有式 - （CX2）对 - 或-CFY（OCF2CFY）mO（CX2）pO（CFYCF2O）nCFY的二价有机基团 - 其中X为氟或氢，Y为氟或三氟甲基，p为1至18，m + n为2至7.在单体电荷中，偕胺肟基与三嗪环形成基团的总比例随 在最终聚合物中所需的交联程度。 所公开的耐热和耐化学性弹性体可以用作例如粘合剂，填缝化合物，通道密封剂，燃料箱衬里。

    Preparation of crosslinked 1,2,4-oxadiazole polymer
    3.
    发明授权
    Preparation of crosslinked 1,2,4-oxadiazole polymer 失效
    交联的1,2,4-恶二唑聚合物的制备

    公开(公告)号：US4273918A

    公开(公告)日：1981-06-16

    申请号：US145284

    申请日：1980-04-30

    申请人： Robert W. Rosser ,  Ibrahim M. Shalhoub ,  Hanoi Kwong

    发明人： Robert W. Rosser ,  Ibrahim M. Shalhoub ,  Hanoi Kwong

    IPC分类号： C08G73/08

    CPC分类号： C08G73/08

    摘要： New crosslinked 1,2,4-oxadiazole elastomers have been prepared by thermally condensing (a) monomer having the formula H.sub.2 N(HON)C-R-Q, wherein Q is a triazine ring-forming group such as nitrile or amidine or a mixture of such group with amidoxime, or (b) a mixture of said monomer with R[C(NOH)NH.sub.2 ].sub.2, with R in these formulas standing for a bivalent organic radical having the formula--(CX.sub.2).sub.p -, or --CFY(OCF.sub.2 CFY).sub.m O(CX.sub.2).sub.p O(CFYCF.sub.2 O).sub.n CFY--wherein X is fluorine or hydrogen, Y is fluorine or trifluoromethyl, p ranges from 1 to 18, and m+n ranges from 2 to 7. In the monomer charge, the overall proportions of amidoxime groups to triazine ring-forming groups varies depending on the extent of crosslinking desired in the final polymer.

    摘要翻译： 通过将（a）具有式H 2 N（HON）CRQ的单体（其中Q是三嗪环形成基团如腈或脒）或这些基团的混合物与 偕胺肟，或（b）所述单体与R [C（NOH）NH 2] 2的混合物，其中这些式中的R代表具有式 - （CX2）对 - 或-CFY（OCF2CFY）mO的二价有机基团 （CX2）pO（CFYCF2O）nCFY-其中X为氟或氢，Y为氟或三氟甲基，p为1至18，m + n为2至7.在单体电荷中，偕胺肟基团的总体比例 至三嗪环形成基团根据最终聚合物中所需的交联程度而变化。