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    • 75. 发明授权
    • Fluorine-containing bismaleamic acids and bismaleimides useful for
thermosetting resins
    • 含氟的含二硫代酸和二氯甲烷二异氰酸酯用于热固性树脂
    • US5089628A
    • 1992-02-18
    • US410494
    • 1989-09-21
    • Masamichi MarutaAkihiro Fukui
    • Masamichi MarutaAkihiro Fukui
    • C07C233/27C07D207/44C07D207/448C07D207/456C07D209/48C08G73/12
    • C07D207/448C07C233/27C07D207/456C07D209/48C08G73/123
    • The invention provides novel fluorine-containing bismaleimides represented by the general formula shown below. The bismaleimides are obtained by dehydrating and cyclizing reaction of corresponding bismaleamic acids which are also novel compounds. For example, maleic anhydride is used for preparing the bismaleamic acids. A mixture of a bismaleimide of the invention and a diamine is useful as a thermosetting resin composition. At 100.degree.-300.degree. C. the resin composition undergoes addition polymerization to turn into a solid resin which are high in moisture resistance and low in dielectric constant. For use in the resin composition it is preferable that both R.sup.1 and R.sup.2 in the general formula of the bismaleimide are --CF.sub.3. ##STR1## wherein A represents a divalent organic group having an ethylenic unsaturated bond; Rf represents fluorine atom or a perfluoroalkyl group; R.sup.1 and R.sup.2 are the same or different and each represent hydrogen atom, methyl group, ethyl group or a halogenated methyl group; and each -N
    • 本发明提供由以下通式表示的新型含氟双马来酰亚胺。 双马来酰亚胺通过相应的双马来酸酸的反应脱水和环化得到,它们也是新型化合物。 例如,马来酸酐用于制备双马来酰胺酸。 本发明的双马来酰亚胺和二胺的混合物可用作热固性树脂组合物。 在100-300℃下,树脂组合物进行加成聚合,变成耐湿性高,介电常数低的固体树脂。 为了在树脂组合物中使用,优选双马来酰亚胺的通式中的R 1和R 2均为-CF 3。 其中A表示具有烯键式不饱和键的二价有机基团; Rf表示氟原子或全氟烷基; R1和R2相同或不同,分别表示氢原子,甲基,乙基或卤代甲基; 并且每个-N'在相对于芳族醚键-O-的m-或p-位上。