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公开(公告)号：DE3446695A1
公开(公告)日：1986-06-26
申请号：DE3446695
申请日：1984-12-21
Applicant: BASF AG
Inventor： PUETTER HERMANN DR , ROSKE ECKHARD
Abstract: Aqueous solutions of organic compounds which contain salts are concentrated by electrodialysis with simultaneous reduction of the salt content of these solutions, the concentrate used being an aqueous salt solution which is not less than 1 molar.
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公开(公告)号：AT291109T
公开(公告)日：2005-04-15
申请号：AT00126503
申请日：2000-12-08
Applicant: BASF AG
Inventor： FISCHER ANDREAS DR , PUETTER HERMANN DR
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公开(公告)号：AT269432T
公开(公告)日：2004-07-15
申请号：AT00106014
申请日：2000-03-28
Applicant: BASF AG
Inventor： SCHIERLE KERSTIN DR , PUETTER HERMANN DR , HUBER GUENTHER , SCHLAEFER DIETER DR , GUTH JOSEF
Abstract: Lithium production from aqueous solution, by lithium amalgam formation and use as a moving anode in an electrolysis cell, is new. Metallic lithium is produced from an aqueous lithium salt solution by forming a lithium amalgam from the solution and using amalgam as a moving anode in an electrolysis cell containing a lithium ion conductive solid electrolyte and a molten lithium cathode. Preferred Features: The lithium amalgam anode is moved by stirring and/or pumping under atmospheric or slightly elevate pressure. The amalgam is produced by chlor-alkali electrolysis.
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公开(公告)号：DE19741423A1
公开(公告)日：1999-03-25
申请号：DE19741423
申请日：1997-09-19
Applicant: BASF AG
Inventor： PUETTER HERMANN DR , HANNEBAUM HEINZ , BAUMANN DIETER
IPC: C25B3/25 , C07D307/88 , C25B3/04
Abstract: Preparation of phthalides (I) involves reducing a phthalic acid compound (II) at the cathode of an electrolysis cell to cause a (II) conversion at a rate of 80-99.5%, followed by crystallizing (I) from the electrolyte. Preparation of phthalides (I) involves reduction of a phthalide compound (II), dissolved in an electrolyte, at the cathode of an undivided electrolysis cell. (II) is selected from phthalic acid and its derivatives in which the carboxy groups are replaced by groups derived from carboxy in a condensation reaction and/or one or more H atoms on the o-phenylene unit are replaced by inert substituents. Reaction is carried out to a conversion such that the molar ratio (I) : ((I) + (II)) is 0.8-0.995 : 1. The electrolyte is then removed from the cell, and (I) is crystallized from the electrolyte (optionally after distillation work-up) and separated from the mother liquor.
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公开(公告)号：DE19641344A1
公开(公告)日：1997-04-24
申请号：DE19641344
申请日：1996-10-08
Applicant: BASF AG
Inventor： PUETTER HERMANN DR , HANNEBAUM HEINZ
Abstract: Process for production of bi:arylene(s) by electrochemical oxidative dimerisation of alkylbenzenes or alkyl:naphthalene(s) in an electrolyte system comprising (a) a water soluble polar organic solvent comprising a 1-3 C carboxylic acid as essential component, (b) water, (c) a conductive salt and (d) a component that is immiscible or only partly miscible with water.
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Patent Agency Ranking
公开(公告)号：DE3676541D1
公开(公告)日：1991-02-07
申请号：DE3676541
申请日：1986-04-17
Applicant: BASF AG
Inventor： PUETTER HERMANN DR , VOSS HARTWIG DR
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.
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公开(公告)号：DE3508206A1
公开(公告)日：1986-09-11
申请号：DE3508206
申请日：1985-03-08
Applicant: BASF AG
Inventor： MUELLER HANS DR , PUETTER HERMANN DR
Abstract: A bipolar membrane is produced by fastening an anion exchange membrane to a cation exchange membrane with the aid of an ion-permeable adhesive, by a process in which an aqueous solution of a polyvinylamine is used as the adhesive, and the bipolar membrane, which consists of two ion exchange membranes and the film-like adhesive, is subjected to electrodialysis.
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公开(公告)号：DE3564076D1
公开(公告)日：1988-09-08
申请号：DE3564076
申请日：1985-12-13
Applicant: BASF AG
Inventor： PUETTER HERMANN DR , ROSKE ECKHARD
Abstract: Aqueous solutions of organic compounds which contain salts are concentrated by electrodialysis with simultaneous reduction of the salt content of these solutions, the concentrate used being an aqueous salt solution which is not less than 1 molar.
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公开(公告)号：DE3560577D1
公开(公告)日：1987-10-15
申请号：DE3560577
申请日：1985-05-18
Applicant: BASF AG
Inventor： PUETTER HERMANN DR , ROSKE ECKHARD , PANDER HANS JOACHIM
IPC: C25B3/00 , B01D61/44 , B01D61/50 , B01D61/54 , C07C237/00 , C07C101/30 , B01D13/02 , C07C99/12 , C07C103/183
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公开(公告)号：DE3514348A1
公开(公告)日：1986-10-23
申请号：DE3514348
申请日：1985-04-20
Applicant: BASF AG
Inventor： PUETTER HERMANN DR , VOSS HARTWIG DR
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 , C07C87/30 , C07C101/12 , C07C101/04
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.
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