-
公开(公告)号：JP2003176248A
公开(公告)日：2003-06-24
申请号：JP2002290014
申请日：2002-10-02
Applicant: BASF AG
Inventor： HEYDRICH GUNNAR , AUST NICOLA CHRISTIANE , PUTTER HERMANN , FISCHER ANDREAS , BOTZEM JOERG
IPC: C07B61/00 , C07C41/50 , C07C43/303 , C07C47/198
Abstract: PROBLEM TO BE SOLVED: To provide a method of producing glyoxal diacetal that uses a water- miscible alcohol and permits the continuous operation in high yield. SOLUTION: The reaction of 40-75 wt.% of glyoxal aqueous solution with a monohydric alcohol is carried out in the presence of an acid catalyst to produce a glyoxal diacetal. In this case, a liquid mixture including the alcohol and glyoxal in at least 15:1 molar ratio and water in an amount of ≤8 wt.% at the start of the reaction is brought into contact with an acid catalyst so that the alcohol used may not be distilled off over 5 wt.% until the concentration of the diacetal formed in the reaction mixture attains at least 70% of the equilibrium concentration. COPYRIGHT: (C)2003,JPO
-
公开(公告)号：DE19904929A1
公开(公告)日：2000-08-10
申请号：DE19904929
申请日：1999-02-06
Applicant: BASF AG
Inventor： BOTZEM JOERG , JAEDICKE HAGEN , PUETTER HERMANN , SCHIERLE KERSTIN
Abstract: The invention relates to a method of producing 2,2,3,3-tetramethoxypropyl alcohol by way of an electrochemical oxidation of methylglyoxaldimethylacetal using a mixture of methanol, water and an auxiliary electrolyte as medium for the electrolysis and an iron, steel, platinum or zinc cathode.
-
公开(公告)号：DE19856376A1
公开(公告)日：2000-06-08
申请号：DE19856376
申请日：1998-12-07
Applicant: BASF AG
Inventor： BOTZEM JOERG , KOBER REINER , FREDE MARKUS
IPC: B01D61/46 , B01D61/44 , C02F1/469 , C07C209/68 , C07C209/84 , C07C211/63 , C07F9/54 , C25B3/00
Abstract: The invention relates to methods for producing or purifying onium hydroxides of elements N, S or P by means of electrodialysis in an electrodialysis device comprising one or several cell units. Each cell unit consists of a bipolar membrane and an anionically selective membrane and a bipolar membrane or a cationically selective membrane is arranged between the last anionically selective membrane and the anode.
-
公开(公告)号：AT285682T
公开(公告)日：2005-01-15
申请号：AT99915725
申请日：1999-03-30
Inventor： KOBER REINER , HOBBS DAVID , GIBSON SCOTT W , FERSCH KENNETH , RADEMACHER WILHELM , BOTZEM JOERG , FREDE MARKUS , DERNBACH MATTHIAS , GOETTSCHE REIMER , DOETZER REINHARD
IPC: C07D295/02 , A01N33/12 , A01N43/40 , A01N59/14 , C01B35/12 , C07D295/037
Abstract: The invention provides novel mepiquat plant growth regulator compositions which have improved hygroscopicity and corrosion characteristics. The novel mepiquat plant growth regulator compositions of the invention can be readily prepared from technical mepiquat chlorid inter alia by electrochemical ion exchange processes or by quaternization of N-methylpiperidine with dimethylcarbonate as starting material.
-
公开(公告)号：AT251110T
公开(公告)日：2003-10-15
申请号：AT99963393
申请日：1999-12-06
Applicant: BASF AG
Inventor： BOTZEM JOERG , KOBER REINER , FREDE MARKUS
IPC: B01D61/46 , B01D61/44 , C02F1/469 , C07C209/68 , C07C209/84 , C07C211/63 , C07F9/54 , C25B3/00
Abstract: Methods of preparing or purifying onium hydroxides of the elements N, S or P by electrodialysis involve an electrodialysis apparatus comprising one or more cell units, each cell unit comprising a bipolar membrane and an anion-selective membrane, and a bipolar membrane or a cation-selective membrane being located on the anode side between the last anion-selective membrane and the anode.
-
Patent Agency Ranking
公开(公告)号：AT240425T
公开(公告)日：2003-05-15
申请号：AT00956251
申请日：2000-07-21
Applicant: BASF AG
Inventor： PUETTER HERMANN , SCHIERLE-ARNDT KERSTIN , BOTZEM JOERG
IPC: C07C43/315 , C07C47/277 , C25B3/23 , C25B3/02
Abstract: A method for producing compounds which are oxidized in an alpha position by electrochemical reaction with alcohol in the presence of an auxiliary electrolyte and catalytic amounts of a metal salt.
-
公开(公告)号：HU0101692A2
公开(公告)日：2001-09-28
申请号：HU0101692
申请日：1999-03-30
Inventor： BOTZEM JOERG , DERNBACH MATTHIAS , DOETZER REINHARD , FERSCH KENNETH , FREDE MARKUS , GIBSON SCOTT W , GOETTSCHE REIMER , HOBBS DAVID , KOBER REINER , RADEMACHER WILHELM
IPC: A01N33/12 , C07D295/02 , A01N43/40 , A01N59/14 , C01B35/12 , C07D295/037
Abstract: The invention provides novel mepiquat plant growth regulator compositions which have improved hygroscopicity and corrosion characteristics. The novel mepiquat plant growth regulator compositions of the invention can be readily prepared from technical mepiquat chlorid inter alia by electrochemical ion exchange processes or by quaternization of N-methylpiperidine with dimethylcarbonate as starting material.
-
公开(公告)号：DE10209195A1
公开(公告)日：2003-09-18
申请号：DE10209195
申请日：2002-03-04
Applicant: BASF AG
Inventor： FISCHER ANDREAS , AUST NICOLA CHRISTIANE , HEYDRICH GUNNAR , BOTZEM JOERG , PUETTER HERMANN
Abstract: Production of trialkylorthoformates (I) comprises producing diacetal (D) in a first stage, from an aqueous reaction mixture (R) of glyoxal, a monofunctional 1-6C alcohol (A), and an acid catalyst, where (D) is produced at at least 70% of equilibrium yield. In a second stage, isolated (D) is electrochemically oxidized in a liquid electrolyte (E) with (A), to give (I). Production of trialkylorthoformates (I) comprises: (1) preparing a diacetal (D) of glyoxal and a monofunctional 1-6C alcohol (A), where a liquid mixture (M1) containing water, (A), and glyoxal are brought in contact with an acid catalyst for as long a time such that the concentration of (D) in the reaction mixture (R) is at least 70% of the equilibrium concentration, followed by isolation of (D) from the reaction mixture; and (2) electrochemically oxidizing (D) in a liquid electrolyte (E) with (A) to give (I), followed by isolation of (I) from (E).
-
公开(公告)号：DE10207238A1
公开(公告)日：2003-09-11
申请号：DE10207238
申请日：2002-02-21
Applicant: BASF AG
Inventor： FISCHER ANDREAS , PUETTER HERMANN , BOTZEM JOERG , HAAG THOMAS
Abstract: Production of organic compounds by electrochemical reaction of corresponding organic starting compounds at graphite, carbon black or carbon electrodes in a liquid electrolyte comprises addition of a metal salt derived from a Group 1, 2, 6, 7 or 8 metal or lead, tin or rhenium to the electrolyte whereby the electrolyte has a dielectric constant of less than 20. A process for the production of organic compounds (I) by electrochemical reaction of corresponding organic starting compounds (II) at graphite, carbon black or carbon electrodes in a liquid electrolyte (E) is claimed whereby 0.01 mmol-1 mole of a metal salt (M) (calculated as moles of metal ions per kg of (E)), derived from a Group 1, 2, 6, 7 or 8 metal or lead, tin or rhenium is added to the electrolyte (E) prior to or during the electrochemical reaction and the composition of the electrolyte (E) is such that (E) has a dielectric constant of less than 20.
-
公开(公告)号：DE50002205D1
公开(公告)日：2003-06-18
申请号：DE50002205
申请日：2000-07-21
Applicant: BASF AG
Inventor： PUETTER HERMANN , SCHIERLE-ARNDT KERSTIN , BOTZEM JOERG
IPC: C07C43/315 , C07C47/277 , C25B3/23 , C25B3/02
Abstract: A method for producing compounds which are oxidized in an alpha position by electrochemical reaction with alcohol in the presence of an auxiliary electrolyte and catalytic amounts of a metal salt.
-
-
-
-
-
-
-
-
-
Search Results
34
records
(took 0.021 seconds)
