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 (xx)
JP (1) JPS5317574B2 (xx)
BE (1) BE794046A (xx)
DE (1) DE2201865C3 (xx)
FR (1) FR2168343B1 (xx)
GB (1) GB1406144A (xx)
SE (1) SE395687B (xx)

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

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Legal Events

Date Code Title Description
RE Patent lapsed

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

Effective date: 19840115