DIPHENYLMETHANE ISOCYANATE COMPOSITION

摘要

Disclosed is a diphenylmethane isocyanate composition comprising a composition which is obtained by adding an alkylchlorosilane having 4-24 carbon atoms in total in the molecular structure to a diphenylmethane isocyanate having an acid degree of less than 0.1% by mass. This diphenylmethane isocyanate composition has a high acid degree of not less than 0.1% by mass. The alkylchlorosilane is preferably 1,3-dichlorotetraisopropyldisiloxane or triethylchlorosilane. The diphenylmethane isocyanate composition takes a longer time before starting to increase in viscosity (namely, has a higher storage stability) than the conventional ones.