PURPOSE: To obtain a modified isocyanate compound having excellent low- temperature storage stability and useful as a production raw material for polyurethane foam, by reacting an isocyanate with a compound having only one active hydrogen in the molecule.
CONSTITUTION: The objective compound can be produced by modifying an isocyanate with a compound having only one active hydrogen in the molecule (e.g. monoalcohol, monocarboxylic acid, etc.) by conventional method. The isocyanate used in the above process is diphenylmethane diisocyanate or a crude diphenylmethane diisocyanate containing ≥50% diphenylmethane diisocyanate. The amount of active hydrogen compound added to the reaction system is 0.010W0.350 equivalent of active hydrogen per 1 equivalent of isocyanate group.
HOTTA HIROMICHI
MIZUMURA KAZUO
KURIBAYASHI KATSUJI
| JPS4745333A | ||||
| JPS4975505A | 1974-07-20 | |||
| JPS49133498A | 1974-12-21 |