PROCESS FOR THE PREPARATION OF N-SUBSTITUTED N- CYANCARBOXYLIC ACID AMIDES AND THEIR USE IN CURABLE EPOXIDE RESIN MIXTURES

摘要

Process for the preparation of N-substituted N-cyancarboxylic acid amides and their use in curable epoxide resin mixtures N-substituted N-cyanocarboxylic acid amides of the formula I are prepared by reacting 1 of an N-cyanocar-boxylic acid amide salt of the formula II with 1 mol of a compound of the formula III or an alkylating agent, for example dimethyl sulfate or diethyl sulfate, in a polar aprotic solvent. The formulae I-III and the meaning of the individual symbols are given in claim 1. The N-substituted N-cyanocarboxylic acid amides which can be obtained by the process according to the invention are useful curing agents for epoxide resins.