Method of preparing aromatic polyamides and polybenzoxazoles
    3.
    发明授权
    Method of preparing aromatic polyamides and polybenzoxazoles 失效
    制备芳香族聚酰胺和聚苯并恶唑的方法

    公开(公告)号:US4820793A

    公开(公告)日:1989-04-11

    申请号:US54965

    申请日:1987-05-28

    IPC分类号: C08G69/32 C08G73/22 C08G73/06

    CPC分类号: C08G69/32 C08G73/22

    摘要: An aromatic polyamide of sufficiently high molecular weight is prepared by reacting a diphenyldiamino compound having a hydroxyl or siloxyl group in each phenyl group and a Si-containing substituent in each amino group, e.g. 2,2-bis(3-trimethylsilylamino-4-trimethylsiloxyphenyl) propane, with an aromatic dicarboxylic acid dihalide in an organic solvent. The polyamide can be converted into a polybenzoxazole by a dehydrating and cyclizing reaction at 100.degree.-500.degree. C.

    摘要翻译: 通过使每个苯基中具有羟基或甲硅烷氧基的二苯基二氨基化合物和每个氨基中的含Si取代基,例如, 2,2-双(3-三甲基甲硅烷基氨基-4-三甲基甲硅烷氧基苯基)丙烷与芳族二羧酸二卤化物在有机溶剂中反应。 聚酰胺可以通过脱水和环化反应在100-500℃下转化成聚苯并恶唑。