N-Cyanoacylamide compounds of the formula I ##STR1## wherein R.sub.1 is hydrogen, alkyl, cycloalkyl or aryl, R.sub.2 is hydrogen or alkyl and R.sub.3 is hydrogen or alkyl and R.sub.3 is alkylene or arylenealkylene, are prepared by reacting 1 mol of an N-cyanocarboxylic acid amide salt with 1 mol of a halogen compound in a polar, aprotic solvent. The N-cyanoacylamide compounds of the formula I can be used for hardening epoxide resins, for the preparation of isomelamine or for the preparation of linear polymers which can be crosslinked by heat.
式I的N-
氰基酰胺化合物 ##STR1## 其中R.sub.1为氢、烷基、环烷基或芳基,R.sub.2为氢或烷基,R.sub.3为氢或烷基,且R.sub.3为亚烷基或芳亚烷基,通过在极性、无质子溶剂中反应1摩尔的N-
氰基
羧酸酰胺盐和1摩尔的卤素化合物制备而成。式I的N-
氰基酰胺化合物可用于硬化环氧
树脂、制备
异烟胺或制备可通过热交联的线性聚合物。