EP1155166A1 - Verfahren zur herstellung von 2,2,3,3-tetramethoxypropanol - Google Patents

Verfahren zur herstellung von 2,2,3,3-tetramethoxypropanol

Info

Publication number
EP1155166A1
EP1155166A1 EP00902640A EP00902640A EP1155166A1 EP 1155166 A1 EP1155166 A1 EP 1155166A1 EP 00902640 A EP00902640 A EP 00902640A EP 00902640 A EP00902640 A EP 00902640A EP 1155166 A1 EP1155166 A1 EP 1155166A1
Authority
EP
European Patent Office
Prior art keywords
water
steel
methanol
tetramethoxypropyl
alcohol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00902640A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jörg Botzem
Hagen Jaedicke
Hermann Pütter
Kerstin Schierle-Arndt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP1155166A1 publication Critical patent/EP1155166A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B3/00—Electrolytic production of organic compounds
    • C25B3/20—Processes
    • C25B3/23—Oxidation

Definitions

  • the present invention relates to a process for the preparation of 2, 2, 3, 3 -tetramethoxypropanol by electrochemical oxidation of methylglyoxaldimethylacetal using a mixture containing methanol and water as the electrolysis medium and a cathode made of iron, steel, platinum or zinc.
  • the invention was therefore based on the object of providing a process which enables the preparation of 2, 2, 3, 3 tetramethoxypropanol with high selectivity, conversion and yield.
  • the electrolysis liquid contains water, preferably in amounts of 0.1 to 5% by weight.
  • auxiliary electrolyte is added to ensure that the electrolysis liquid has sufficient conductivity.
  • Suitable auxiliary electrolytes are preferably halogen-containing compounds, for example elemental halogen, alkyl halides, hydrogen halides and preferably salts of the halides, particularly preferably iodides and bromides.
  • the salts of the halides are especially ammonium halides, e.g. Ammonium bromide or ammonium iodide or tetrabutylammonium iodide or metal halides, preferably alkali metal halides such as sodium bromide, sodium iodide, potassium iodide or potassium bromide are preferred.
  • the electrolysis liquid preferably has the following composition:
  • methylglyoxaldimethylacetal 50 to 98.8 preferably 70 to 95% by weight of methanol 0.1 to 5, preferably 0.5 to 3% by weight of an auxiliary electrolyte and
  • the reaction according to the invention is preferably carried out at current densities of 0.5 to 25 A / dm 2 and at temperatures from -20 to 60 ° C., preferably 0 to 40 ° C.
  • pressure is generally not critical. In general, the process is carried out at pressures of 0.1 to 10 bar, preferably at normal pressure. High pressures are particularly suitable at high reaction temperatures.
  • Suitable anode materials are, for example, noble metals such as platinum or oxides such as ruthenium and chromium oxide or RuO x Ti x mixed oxides and preferably graphite.
  • iron, steel, platinum or zinc 20 are used as cathodes.
  • the steel can be both unalloyed steel and higher-alloy steel with additives such as chrome, manganese, boron or stainless steel.
  • the term iron is not only elemental iron but the well-known types of iron, which are more or less Si, Mn, 25 S, P as further alloy components and also additions of Al, Cr, Mn, Mo, Ni, Ta, Ti, Vn, Contain Si, Co, and other common alloy components.
  • V is particularly preferably 2 A-, VA steel.
  • the method according to the invention can be carried out in the generally customary electrolysis cells, for example in undivided flow cells, e.g. undivided plate frame - cells -.
  • the electrolysis is stopped when a conversion 35 of approximately 100% is reached.
  • the electrolysis liquid is worked up by the methods generally used in organic chemistry, for example by distillation.
  • Undivided plate-frame cell 6 mm electrode spacing anode Sigraflex cathode: steel of type 1.4301 total electrode area: 2.56 dm 2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP00902640A 1999-02-06 2000-01-29 Verfahren zur herstellung von 2,2,3,3-tetramethoxypropanol Withdrawn EP1155166A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19904929A DE19904929A1 (de) 1999-02-06 1999-02-06 Verfahren zur Herstellung von 2,2,3,3-Tetramethoxypropanol
DE19904929 1999-02-06
PCT/EP2000/000698 WO2000046424A1 (de) 1999-02-06 2000-01-29 Verfahren zur herstellung von 2,2,3,3-tetramethoxypropanol

Publications (1)

Publication Number Publication Date
EP1155166A1 true EP1155166A1 (de) 2001-11-21

Family

ID=7896690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00902640A Withdrawn EP1155166A1 (de) 1999-02-06 2000-01-29 Verfahren zur herstellung von 2,2,3,3-tetramethoxypropanol

Country Status (4)

Country Link
EP (1) EP1155166A1 (ja)
JP (1) JP2002536546A (ja)
DE (1) DE19904929A1 (ja)
WO (1) WO2000046424A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10254709A1 (de) * 2002-11-23 2004-06-09 Reinhold Denz Elektrolyse-Vorrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59105416D1 (de) * 1990-05-31 1995-06-14 Basf Ag Verfahren zur Herstellung von alpha-Hydroxymethyl-ketalen.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0046424A1 *

Also Published As

Publication number Publication date
DE19904929A1 (de) 2000-08-10
WO2000046424A1 (de) 2000-08-10
JP2002536546A (ja) 2002-10-29

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