发明名称 |
METHOD AND DEVICE FOR SYNTHESIZING POLYESTER |
摘要 |
Provided are a method and a device that improve the starting material yield and simplify the wastewater treatment equipment in polybutylene succinate production. The method for producing polybutylene succinate is a method comprising an esterification step in which a starting slurry comprising succinic acid and 1,4-butanediol as the primary starting materials is subjected to esterification and an oligomer is synthesized, and a polycondensation step in which the oligomer is subjected to ester exchange, wherein a catalyst is added to the starting slurry during the esterification step, esterification is performed at 185 to 195°C, and additional catalyst is added during the polycondensation step. |
申请公布号 |
KR20120014243(A) |
申请公布日期 |
2012.02.16 |
申请号 |
KR20117024871 |
申请日期 |
2010.04.23 |
申请人 |
HITACHI PLANT TECHNOLOGIES, LTD. |
发明人 |
MATSUO TOSHIAKI;KAMIKAWA MASAYUKI;OKA KENICHIRO;KONDO TAKEYUKI;ITO HIROYUKI;SASE YASUNARI |
分类号 |
C08G63/78;C08G63/16;C08L67/02 |
主分类号 |
C08G63/78 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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