| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for production of regenerated polyol which dispenses with a refining step, can simplify a production step, and can be used as a raw material of regenerated polyurethane foam. <P>SOLUTION: In hard or soft polyurethane foam, polyurethane foam is heated and dissolved at temperatures of 100°C to 250°C in the presence of a temperature-sensitive catalyst composed of an amine salt which acts at temperatures of 50°C to 250°C as a decomposition catalyst of the polyurethane foam, and one or both glycol and glycerin, and used as the regenerated polyol which can be used as the raw material of the regenerated polyurethane foam. <P>COPYRIGHT: (C)2012,JPO&INPIT |
