Verfahren zur Herstellung von lagerbestaendigem,fluessigem Methylenbis(phenylisocyanat)

摘要

An isocyanate composition, said to be a storage-stable liquid at above 15 DEG C., is made by heating at 40-110 DEG C. a mixture of a methylenebis (phenyl isocyanate), which is normally solid at 15 DEG C., with 2-10 weight percent of N,N-di(2-hydroxypropyl) aniline, and the prior or subsequent addition of 0.001-0.1 weight per cent of phosphoric acid.