Title:
【発明の名称】アジピン酸の製造から得られる母液のワークアップの方法
Document Type and Number:
Japanese Patent JP3066155
Kind Code:
B2
Abstract:
A process for working up mother liquors resulting from the preparation of adipic acid by oxidation of cyclohexanol or cyclohexanone or mixtures thereof with nitric acid entails removal of nitric acid by azeotropic distillation with water, heating the resulting melt at from 130 DEG to 180 DEG C. and then dissolving it in water, treating the aqueous solution with cation exchangers, subsequently again evaporating off the water and heating the resulting dicarboxylic acid melt at from 200 DEG to 240 DEG C. and then obtaining a mixture of dicarboxylic acids by distillation.
Inventors:
Gerhard and Frank
Gunther, Hermann
Gert, Burger
Jost, Henrich, Manegold
Stefan, Calbach
Ludiger, Schmidt
Gunther, Hermann
Gert, Burger
Jost, Henrich, Manegold
Stefan, Calbach
Ludiger, Schmidt
Application Number:
JP33336391A
Publication Date:
July 17, 2000
Filing Date:
December 17, 1991
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
B01J23/847; C07B61/00; C07C51/31; C07C51/42; C07C51/44; C07C51/47; C07C55/14; (IPC1-7): C07C55/14; B01J23/847; C07C51/31; C07C51/44; C07C51/47
Domestic Patent References:
| JP4887624A | ||||
| JP5813540A |
Other References:
【文献】米国特許3106450(US,A)
【文献】米国特許3965164(US,A)
【文献】欧州特許出願公開128709(EP,A1)
【文献】米国特許3965164(US,A)
【文献】欧州特許出願公開128709(EP,A1)
Attorney, Agent or Firm:
Joji Tashiro