公开(公告)号：JPH05239118A

公开(公告)日：1993-09-17

申请号：JP32309992

申请日：1992-12-02

Applicant: BASF AG

Inventor： YURUGEN DEETERINGU ,  HARUTOBUITSUHI FUOSU

IPC: C08F6/06 ,  C08F2/04 ,  C08F6/00 ,  C08F26/10

公开(公告)号：JPH04279593A

公开(公告)日：1992-10-05

申请号：JP20777791

申请日：1991-08-20

Applicant: BASF AG

Inventor： BUARUTAA DOPURAA ,  HARUTOBUITSUHI FUOSU ,  FURIIDOHERUMU BARUKENHOORU ,  YOAHIMU PAUSUTO

IPC: C07F9/09 ,  B01D61/44 ,  C07D307/62 ,  C07F9/655

公开(公告)号：JPH01188696A

公开(公告)日：1989-07-27

申请号：JP30427088

申请日：1988-12-02

Applicant: BASF AG

Inventor： HARUTOBUITSUHI FUOSU ,  TOOMASU BURIYUTSUKEN

IPC: C25D13/24

公开(公告)号：JPS61249936A

公开(公告)日：1986-11-07

申请号：JP8439886

申请日：1986-04-14

Applicant: BASF AG

Inventor： HERUMAN PIYUTSUTAA ,  HARUTOBUITSUHI FUOSU

IPC: B01D61/24 ,  B01J47/12 ,  C07B31/00 ,  C07B41/08 ,  C07B63/02 ,  C07C51/00 ,  C07C51/02 ,  C07C59/265 ,  C07C67/00 ,  C07C227/00 ,  C07C227/18 ,  C07C229/00 ,  C07C229/08 ,  C07C229/16 ,  C07C303/00

Abstract: Aqueous solutions of organic acids or bases are obtained by a process in which (a) an aqueous solution of a salt of an organic acid or of an organic base and (b) respectively, an aqueous solution of an inorganic base or of an inorganic acid are each passed into compartments of an exchange cell which are separated from one another by an ion exchange membrane, and the solution (a) and (b) are transported past the surface of the membrane.

公开(公告)号：JPH04275270A

公开(公告)日：1992-09-30

申请号：JP33645791

申请日：1991-12-19

Applicant: BASF AG

Inventor： HARUTOBUITSUHI FUOSU ,  RORUFU SHIYUNAIDAA

IPC: B01D61/44 ,  C07C303/02 ,  C07C303/44 ,  C07C309/04

公开(公告)号：JPH02247148A

公开(公告)日：1990-10-02

申请号：JP115790

申请日：1990-01-09

Applicant: BASF AG

Inventor： MIHIAERU SHIYUTAINIGAA ,  HARUTOBUITSUHI FUOSU ,  REOPORUTO FUPUFUAA

IPC: B01D61/24 ,  B01D61/44 ,  C07C45/00 ,  C07C45/28 ,  C07C45/78 ,  C07C45/80 ,  C07C47/127

公开(公告)号：JPH02115025A

公开(公告)日：1990-04-27

申请号：JP24237989

申请日：1989-09-20

Applicant: BASF AG

Inventor： HARUTOBUITSUHI FUOSU

IPC: B01D61/52 ,  B01D57/02 ,  B01D61/44 ,  C02F1/469 ,  C09B67/54

Abstract: PURPOSE: To efficiently remove a sulfuric acid salt and polybasic low mol.wt. acid together with the salt of the polyvalent low mol.wt. acid in an anion org. compd.-contg. aq. soln. by subjecting this aq. soln. to an acidification treatment before or during an electrodialysis treatment. CONSTITUTION: Anion exchange membranes and cation exchange membranes are alternately arrayed parallel to each other between two electrodes and the compartments formed by inserted spacer frames are segmented from each other. The electrolyte-contg. soln. which contains the anion org. compd. and is subjected to acidification is passed in the compartment limited in an anode direction via the anion exchange membranes. The electrolyte-contg. aq. soln. of, for example, 1 to 10 mS/cm in initial electrical conductivity is passed via the cation exchange membranes through the inside of the compartments limited in the anode direction, to make it possible to receive the salt. The more specific examples of the desalted suitable anion org. compds. include fluorescent bleaching agents, dyes, mono- or polycarboxylic acid or the like.