发明授权
EP1189969B1 VERFAHREN ZUR KONTINUIERLICHEN HERSTELLUNG VON POLYBUTYLENTEREPHTHALAT AUS TEREPHTHALSÄURE UND BUTANDIOL
有权
一种用于从对苯二甲酸和丁二醇对苯二甲酸丁二醇酯的连续生产
- 专利标题: VERFAHREN ZUR KONTINUIERLICHEN HERSTELLUNG VON POLYBUTYLENTEREPHTHALAT AUS TEREPHTHALSÄURE UND BUTANDIOL
- 专利标题(英): Method for the continuous production of polybutyleneterephthalate from terephthalic acid and butanediol
- 专利标题(中): 一种用于从对苯二甲酸和丁二醇对苯二甲酸丁二醇酯的连续生产
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申请号: EP00951286.4申请日: 2000-06-28
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公开(公告)号: EP1189969B1公开(公告)日: 2004-09-08
- 发明人: HEITZ, Thomas , KLATT, Martin , NEUHAUS, Ralf
- 申请人: BASF AKTIENGESELLSCHAFT
- 申请人地址: 67056 Ludwigshafen DE
- 专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人: BASF AKTIENGESELLSCHAFT
- 当前专利权人地址: 67056 Ludwigshafen DE
- 代理机构: Isenbruck, Günter, Dr.
- 优先权: DE19929790 19990629
- 国际公布: WO2001000705 20010104
- 主分类号: C08G63/78
- IPC分类号: C08G63/78
摘要:
The invention relates to a method for the continuous production of polybutyleneterephthalate from terephthalic acid and 1,4-butanediol, comprising the following: d) the direct esterification of terephthalic acid with 1,4-butanediol in a reactor series consisting of at least two reactors; e) the precondensation of the product of esterification obtained in step a); f) the polycondensation of the precondensate obtained in step b). The reactor series in step a) is operated with a falling reaction pressure and a non-rising temperature.
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