Invention Grant
- Patent Title: Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine
- Patent Title (中): 在制备高纯三乙二胺时得到的母液的处理
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Application No.: US10138337Application Date: 2002-05-06
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Publication No.: US07345173B2Publication Date: 2008-03-18
- Inventor: Ortmund Lang , Bernd Rumpf , Matthias Frauenkron , Dirk Funhoff , Thomas Manderbach , Bernd Stein
- Applicant: Ortmund Lang , Bernd Rumpf , Matthias Frauenkron , Dirk Funhoff , Thomas Manderbach , Bernd Stein
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Novak Druce + Quigg LLP
- Priority: DE10122502 20010510
- Main IPC: C07D487/00
- IPC: C07D487/00
Abstract:
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.
Public/Granted literature
- US20030004349A1 Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine Public/Granted day:2003-01-02
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