| 摘要 |
<P>PROBLEM TO BE SOLVED: To manufacture a polyurethane foam in which the variation in density is small, the hardness is high, and the mechanical strength and wet heat compression characteristics of a resin are outstanding. <P>SOLUTION: There is provided a method of manufacturing a polyurethane foam that comprises reacting a polyol component comprising a polyol (A), and a polyisocyanate component in the presence of a foaming agent (C). The component (A) comprises the following polyol (a), and the component (C) comprises a supercritical fluid. Polyol (a) is an alkylene oxide adduct of an active hydrogen-containing compound (H), in which at least 5% of a hydroxy group located in the terminal is a specific primary hydroxy group containing group, and which is polyoxyalkylene polyol in which hydroxyl value x, total unsaturation degree y, and ethylene oxide content z satisfy the relation of mathematical expression (1): y≤28.3×x<SP POS="POST">-2</SP>×(100-z)/100. <P>COPYRIGHT: (C)2012,JPO&INPIT |
