| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a batchwise polyester polymerizer applicable to a batchwise polyester polymerization method, and capable of shortening polycondensation reaction time and improving the productivity. <P>SOLUTION: The batchwise polyester polymerizer which may be the normal one having a polycondensation reaction vessel 4 joined to a vacuum connection line 5, a reaction liquid-circulating pump 3 and a reaction liquid-circulating line 2, also has a thin film column 1 which has two or more inclined plates 1c fixed to the inner wall at a prescribed angle, of which the inlet 1b side is joined to one terminal of the reaction liquid-circulating line 2, and of which the outlet 1a side is joined to the upper part of the polycondensation reaction vessel 4. <P>COPYRIGHT: (C)2004,JPO</p> |
