发明授权
- 专利标题: Verfahren zur Rückgewinnung von Mineralsäuren bei der Herstellung von Diphenylmethandiamin
- 专利标题(英): Method for the recovery of mineral acids in a process for producing diphenylmethane diamine
- 专利标题(中): 工艺的无机酸在二苯基甲烷二胺的制造中恢复
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申请号: EP08760734.7申请日: 2008-06-09
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公开(公告)号: EP2167456B1公开(公告)日: 2011-12-07
- 发明人: WLOKA, Veronika , MATTKE, Torsten , KNÖSCHE, Carsten , BREUNINGER, Daniel , BOTTKE, Nils
- 申请人: BASF SE
- 申请人地址: 67056 Ludwigshafen DE
- 专利权人: BASF SE
- 当前专利权人: BASF SE
- 当前专利权人地址: 67056 Ludwigshafen DE
- 优先权: EP07110073 20070612
- 国际公布: WO2008152021 20081218
- 主分类号: C07C209/78
- IPC分类号: C07C209/78 ; C01B7/05 ; C01B7/07 ; B01D15/00 ; B01J20/18
摘要:
The invention relates to a method for the recovery of diphenylmethane diamine, comprising the steps of A) reaction of aniline with formaldehyde in the presence of a mineral acid, B) neutralization of the mineral acid with a base, C) separation of the organic and inorganic phase, D) removal of the base from the inorganic phase by adsorption, c) recovery of the mineral acid.
公开/授权文献
- EP2167456A1 VERFAHREN ZUR GEWINNUNG VON MINERALSÄUREN AUS SALZLÖSUNGEN 公开/授权日:2010-03-31
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