BE794046A - Procede de preparation de solutions aqueuses de formaldehyde pauvres en methanol - Google Patents

Procede de preparation de solutions aqueuses de formaldehyde pauvres en methanol

Info

Publication number
BE794046A
BE794046A BE794046DA BE794046A BE 794046 A BE794046 A BE 794046A BE 794046D A BE794046D A BE 794046DA BE 794046 A BE794046 A BE 794046A
Authority
BE
Belgium
Prior art keywords
methanol
aqueous solutions
preparing aqueous
formaldehyde low
formaldehyde
Prior art date
Application number
Other languages
English (en)
French (fr)
Original Assignee
Basf Ag
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.)
Publication date
Publication of BE794046A publication Critical patent/BE794046A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
    • C07C45/83—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by extractive distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
BE794046D 1972-01-15 Procede de preparation de solutions aqueuses de formaldehyde pauvres en methanol BE794046A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2201865A DE2201865C3 (de) 1972-01-15 1972-01-15 Verfahren zur Herstellung methanolarmer, wäßriger Formaldehydlösungen

Publications (1)

Publication Number Publication Date
BE794046A true BE794046A (fr) 1973-07-16

Family

ID=5833094

Family Applications (1)

Application Number Title Priority Date Filing Date
BE794046D BE794046A (fr) 1972-01-15 Procede de preparation de solutions aqueuses de formaldehyde pauvres en methanol

Country Status (7)

Country Link
US (1) US3853719A (enExample)
JP (1) JPS5317574B2 (enExample)
BE (1) BE794046A (enExample)
DE (1) DE2201865C3 (enExample)
FR (1) FR2168343B1 (enExample)
GB (1) GB1406144A (enExample)
SE (1) SE395687B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218089B (en) * 1988-04-07 1991-11-06 Asahi Chemical Ind Process for producing high purity formaldehyde
DE10062814A1 (de) 2000-12-15 2002-06-20 Ticona Gmbh Verfahren zur Entfernung von Methanol aus formaldeyhdhaltigen Lösungen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452414A (en) * 1945-07-27 1948-10-26 Skelly Oil Co Concentrating and refining formaldehyde solutions by distillation with oxygenated hydrocarbon derivatives
US2678905A (en) * 1949-11-17 1954-05-18 Celanese Corp Purification of aqueous formaldehyde solutions by extractive distillation
US2690994A (en) * 1950-02-01 1954-10-05 James F Mccants Formaldehyde purification by use of alcohols
US3558719A (en) * 1965-10-14 1971-01-26 Exxon Research Engineering Co Recovery of aqueous formaldehyde by extraction with an alkanol followed by distillation

Also Published As

Publication number Publication date
JPS4878111A (enExample) 1973-10-20
DE2201865C3 (de) 1974-12-19
DE2201865B2 (de) 1974-03-14
JPS5317574B2 (enExample) 1978-06-09
DE2201865A1 (de) 1973-07-26
FR2168343B1 (enExample) 1977-12-30
FR2168343A1 (enExample) 1973-08-31
SE395687B (sv) 1977-08-22
GB1406144A (en) 1975-09-17
US3853719A (en) 1974-12-10

Similar Documents

Publication Publication Date Title
BE804664A (fr) Procede de preparation continue de solutions aqueuses de cobalt-carbonyles
BE799033A (fr) Procede de preparation de solutions de polyurethane-urees,
BE798483A (fr) Procede de preparation d'aldehydes
BE833550A (fr) Procede de preparation de solutions aqueuses concentrees de formaldehyde
FR2288726A1 (fr) Procede de preparation de formaldehyde
BE799029A (fr) Procede de preparation de solutions de polyurethane-urees,
BE799532A (fr) Procede de preparation de thiocarbamylsulfenamides,
BE797346A (fr) Procede de preparation de 1-hydroxy-2-pyridones
BE800406A (fr) Procede de preparation de percarbonate alcalin
BE814930A (fr) Procede de preparation de formaldehyde
CH551444A (fr) Procede de preparation de sels de 4-oxo-4h-1-benzopyranyl-tetrazoles.
BE805635A (fr) Procede de preparation de thiazolsulfenamides
CH546273A (fr) Procede de preparation de sels de phenoxazonium.
BE794046A (fr) Procede de preparation de solutions aqueuses de formaldehyde pauvres en methanol
BE752580A (fr) Procede de preparation de formaldehyde
BE807056A (fr) Procede de preparation de dialkylphosphines
BE807204A (fr) Procede de preparation de thiazolsulfenamides
BE822611A (fr) Solutions aqueuses stabilisees de formaldehyde et procede de preparation de ces solutions
BE801697A (fr) Procede de preparation des benzyl-monocetals
BE800375A (fr) Procede de preparation du 3-nitro-4-amino-toluene
BE819035A (fr) Procede de preparation de d(-)-penicillamine et de ses sels
BE811186A (fr) Procede de preparation de solutions aqueuses concentrees de formaldehyde
BE808735A (fr) Procede de preparation du resorcinol
BE801944A (fr) Procede de preparation de la 1-nitro-anthraquinone
BE820876A (fr) Procede de preparation de dialdehydes aliphatiques

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: BADISCHE ANILIN- & SODA-FABRIK A.G.

Effective date: 19840115