Analyzing the synthesis methods and process optimization of 4

synthesis methods and process optimization of 4,4′-diaminodiphenylmethane abstract: 4,4′-diaminodiphenylmethane (4,4′-mda), a crucial aromatic diamine, serves as a key building block in the production of polyurethane elastomers, epoxy resins, and other high-performance polymers. its properties significantly influence the final characteristics of these materials. this review comprehensively analyzes various synthesis methods for 4,4′-mda, focusing on the reaction mechanisms, catalytic systems, process optimization strategies, and product quality parameters. the…