| 摘要 |
<p>Provided are a device and a method for producing high-quality polybutylene succinate. The method for producing polybutylene succinate comprises a step for producing a starting slurry by mixing succinic acid or a derivative thereof and 1,4-butanediol in a starting slurry preparation tank; a step for retaining the starting slurry in a starting slurry reservoir while maintaining fluidity; a step for esterification of the starting slurry in an esterification reactor; and a step for synthesizing a polybutylene succinate by polycondensation of the ester in a polycondensation reactor. The polycondensation reactor is divided, beginning from the upstream side, into at least an initial polycondensation reactor, intermediate polycondensation reactor, and final polycondensation reactor; catalyst is added at 1,000 to 3,000 ppm with respect to the succinic acid or derivative thereof; the reaction time in the intermediate polycondensation reactor is 0.25 to 0.75 hours; and the reaction temperature in the final polycondensation reactor is 245 to 255ºC.</p> |
