| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a polyurethane foam in which the compatibility of raw materials, the uniformity and stability of cells are improved and the foam has low repulsion characteristic without using compounds giving bad influences on a human body. SOLUTION: The polyurethane foam contains a nonionic compound represented by the formula (I): RO-[(EO)x .(PO)y ]-(EO)z -H (I) [wherein, R is a 8-20C linear or branched chain alkyl group or alkenyl group; EO is an oxyethylene group; PO is an oxypropylene group; x and z are each 1 or more showing an average addition mol number of the oxyethylene group; the sum of x and z is 3 or more; y is 1 or more showing an average addition mol number of the oxypropylene group provided that the [(EO)x .(PO)y ] is a random block adduct or its mixed and [(EO)x .(PO)y ] and (EO)z are block-bonded]. The method for producing the polyurethane foam comprises a reaction of a polyol component and an isocyanate compound in the presence of the nonionic compound, a foaming agent and a catalyst. |
