Process for preparing hydroxy-containing amine complexes which are useful as catalysts for trimerizing isocyanates and preparing polyurethanes

摘要

Hydroxy-containing amine complexes useful as catalysts for the trimerization of isocyanates and the preparation of urethanes from alcohols and isocyanates, are prepared in good yield by reacting an amine with an epoxide in the presence of water and an aldehyde having no alpha protons, and then recovering the desired complex from the reaction mixture. Also provided are new rigid polyurethane cellular products having a high content of isocyanurate linkages, superior heat distortion temperatures and insulating properties which are obtained by reacting a polyol with a polyisocyanate in the presence of the aforementioned new amine complex catalysts.