introduction n,n-dimethylcyclohexylamine (dmcha), a tertiary amine, is a widely utilized catalyst in the production of polyurethane (pu) foams, elastomers, and coatings. its primary function is to accelerate the reaction between isocyanates and polyols, facilitating the gelling process and influencing the final properties of the resulting polyurethane material. this article provides a comprehensive overview of dmcha’s...