| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polycaprolactone copolymer producible using easily available materials and having a high degradability, its utilization method, and its manufacturing method and manufacturing equipment. <P>SOLUTION: The polycaprolactone copolymer is produced in the manner that its mixture is heated and kneaded stepwise at temperatures in the order of 30-50°C, preferably 40°C, 50-70°C, preferably 60°C, 80-100°C, preferably 90°C, and 100-120°C, preferably 110°C, and further stepwise heated, pressurized and kneaded at temperatures in the order of 110-130°C, preferably 120°C and 130-150°C, preferably 140°C. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
