| 摘要 |
PROBLEM TO BE SOLVED: To produce a rigid polyurethane foam having a low heat conductivity by using a foaming agent low in ozonolysis coefficient. SOLUTION: This method for producing a rigid foamed synthetic resin comprises reacting a polyisocyanate compound with an active hydrogen compound having two or more active hydrogen atom-containing functional groups capable of reacting with isocyanate groups in the presence of a foaming agent, a catalyst and other auxiliaries. Therein, cyclopnentane and water are used as the foaming agent, and the alkylene oxide adduct of a diaminodiphenylmethane compound or polymethylenepolyphenylamine compound is used as a part of the active hydrogen compound. |
