发明名称 |
Method and device for producing polyesters, copolyesters and polycarbonates |
摘要 |
In a process for producing polyester, the esterification of dicarboxylic acids and diols is carried out in at least one reaction stage, the prepolycondensation of the esterification product in at least one reaction stage and the polycondensation of the prepolycondensation product in at least one reaction stage. To increase the capacity of the apparatus forming one or more of the reaction stages in the production of the polyesters, at at least one of the reaction stages the supplied product system before it enters the reaction stage or within the reaction stage is divided into at least two partial streams and the partial streams entirely or partially separate from one another are passed through the reaction stage.
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申请公布号 |
US7084234(B2) |
申请公布日期 |
2006.08.01 |
申请号 |
US20040513227 |
申请日期 |
2004.11.01 |
申请人 |
ZIMMER AKTIENGESELLSCHAFT |
发明人 |
WILHELM FRITZ;REISEN MICHAEL |
分类号 |
C08G63/00;B01J19/18;B01J19/20;C08G63/78;C08G64/20;C08G64/30 |
主分类号 |
C08G63/00 |
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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