This invention relates to improved polyepoxide resins cured with a mixture of methylene bridged poly(cycloaliphatic-aromatic)amines and a process for preparing such polyepoxide resins as well as to the methylene bridged poly(cycloaliphatic-aromatic)amine compositions and a method of making them. The improvement resides in using a curative (herein referred to as "Heavy MPCA") comprised of the partially hydrogenated condensation product of formaldehyde and aniline or methyl substituted aniline containing a substantial amount (from 35 to 85% by weight, preferably 40 to 60% by weight) of oligomers in the form of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15 aniline or methyl substituted aniline derivatives.
本发明涉及用亚甲基桥联聚(环脂族-芳香族)胺混合物固化的改进型聚环氧
树脂和制备这种聚环氧
树脂的工艺,以及亚甲基桥联聚(环脂族-芳香族)胺组合物及其制造方法。改进之处在于使用了一种由
甲醛和
苯胺或甲基取代
苯胺的部分氢化缩合产物组成的固化剂(此处称为 "重型 MPCA"),该固化剂含有大量(按重量计从 35% 到 85%,最好是按重量计从 40% 到 60%)以 3、4、5、6、7、8、9、10、11、12、13、14 和 15
苯胺或甲基取代
苯胺衍
生物形式存在的低聚物。