| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane foam having an excellent dimensional stability and a low impact resilience. SOLUTION: The manufacturing process of a polyurethane foam comprises reacting a polyol component with a polyisocyanate component. The polyol component includes a polyol A whose polyol component has 2 or 3 functional groups and a hydroxyl value of 15-90 mg KOH/g and a polyoxypropylene sorbitol ether B. COPYRIGHT: (C)2007,JPO&INPIT |
