news analyzing the role of 4,4′-diaminodiphenylmethane in the preparation of flame-retardant polymers the multifaceted role of 4,4′-diaminodiphenylmethane (mda) in the preparation of flame-retarda... 05/09934′-diaminodiphenylmethane in the preparation of flame-retardant polymers Analyzing the role of 4