gelling polyurethane amine catalysts: a comprehensive review of dmea and dmp-30 abstract: this article provides a comprehensive overview of two widely utilized amine catalysts in polyurethane (pu) systems: dimethylethanolamine (dmea) and 2,4,6-tris(dimethylaminomethyl)phenol (dmp-30). it delves into their chemical structures, reaction mechanisms in pu formation, product parameters, application characteristics, and comparative performance in various pu formulations....