Hexarnethylenediamine, as well as being of supreme importance for the manufacture of nylon 6.6 (e. ,p.. in 1992 in the USA 87%.in Western Europe 93 070 and in Japan 91 010 of the production of HMDA), is, after reaction with phosgene to form the diiso-cyanate, playing an increasing role as a component of foams and resins (cJ Section 13.3.3).