| abstract |
Mannich condensation products having the formulan n constitute a novel class of curing agents for epoxy resins. n In the above formula nX is a group of the formulan n Y is hydrogen or a group of the formulan n m and n are each 1-6, nR¹ is hydrogen or methyl nR² is hydrogen, C₁-C₄ alkyl or cyanoethyl, nR³ is C₁-C₁₅ alkyl, and nR⁴ is hydrogen, C₁-C₄ alkyl or cyanoethyl, with the proviso that when R² is not hydrogen, R⁴ is also not hydrogen. |