发明授权
- 专利标题： Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine
- 专利标题（中）： 在制备高纯三乙二胺时得到的母液的处理
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申请号： US10138337申请日： 2002-05-06
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公开(公告)号： US07345173B2公开(公告)日： 2008-03-18
- 发明人: Ortmund Lang , Bernd Rumpf , Matthias Frauenkron , Dirk Funhoff , Thomas Manderbach , Bernd Stein
- 申请人： Ortmund Lang , Bernd Rumpf , Matthias Frauenkron , Dirk Funhoff , Thomas Manderbach , Bernd Stein
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： DE Ludwigshafen
- 代理机构： Novak Druce + Quigg LLP
- 优先权： DE10122502 20010510
- 主分类号： C07D487/00
- IPC分类号： C07D487/00
摘要：
In a process for the purification of triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is passed into a liquid solvent and is subsequently crystallized from this, the mother liquor obtained after the TEDA has been crystallized is extracted with an extractant which is immiscible or only slightly miscible with the solvent of the mother liquor and in which TEDA is readily soluble, and the TEDA-depleted mother liquor obtained after extraction and/or the TEDA-enriched extractant which has been used for the extraction are/is returned to the process.
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