Condensation polymers are prepared by agitating a mixture comprising glyoxal, a monomer comprising two or three primary aromatic amine groups, an organic solvent, and water at a temperature between 20° C. and 100° C. The resulting solution can be applied to a surface of a substrate, forming an initial film. Curing the initial film layer using two or more heating steps, wherein one of the heat steps is performed at a temperature of 150° C. to 250° C., produces a cured film layer. Depending on the relative amounts of glyoxal and monomer used, the film layer can contain predominantly high Tg imine-containing units or predominantly lower Tg aminal-containing units. All film layers were highly resistant to the solvent used to prepare the polymer. The Tg of the polymer can be about 190° C. to greater than 300° C.
缩聚聚合物的制备方法是在 20° C 至 100° C 的温度下搅拌
乙二醛、含有两个或三个芳香族
伯胺基团的单体、有机溶剂和
水的混合物。使用两个或多个加热步骤固化初始膜层,其中一个加热步骤的温度为 150°C 至 250°C,从而形成固化膜层。根据
乙二醛和单体的相对用量,薄膜层可以主要含有高 Tg 含
亚胺单元,也可以主要含有低 Tg 含
氨基单元。所有薄膜层都对用于制备聚合物的溶剂具有很强的耐受性。聚合物的 Tg 可以是约 190 摄氏度到高于 300 摄氏度。