| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for industrially and profitably producing a polytetramethylene carbonatediol which is used for a thermoplastic polyurethane. <P>SOLUTION: The method for producing the polytetramethylene carbonatediol comprises adding an acidic compound in a reaction to obtain the polytetramethylene carbonatediol by reacting butanediol with one kind selected from among a dialkyl carbonate, a diaryl carbonate, and an alkylene carbonate. <P>COPYRIGHT: (C)2004,JPO |
