news the key role of dmdee dimorpholine diethyl ether in the production of polyurethane hard foam: improving reaction speed and foam quality the key role of dmdee dimorpholine diethyl ether in the production of polyurethane hard foam: improv... 03/0687The key role of DMDEE dimorpholine diethyl ether in the production of polyurethane hard foam: improving reaction speed and foam quality