| 摘要 |
PURPOSE:To obtain a resin foam excellent in expandability, highly safe for the human body, not causing environmental pollution, and expandable in a wide range of temperature. CONSTITUTION:The title composition contains a carbamoyl-azocarboxylic ester represented by the general formula: H2NCON=NCOOR (R is lower alkyl, phenyl or benzyl) as the blowing agent. |
