CA978495A - Process for isolating formaldehyde from mixtures of acetic acid, formaldehyde and water - Google Patents

Process for isolating formaldehyde from mixtures of acetic acid, formaldehyde and water

Info

Publication number
CA978495A
CA978495A CA149,695A CA149695A CA978495A CA 978495 A CA978495 A CA 978495A CA 149695 A CA149695 A CA 149695A CA 978495 A CA978495 A CA 978495A
Authority
CA
Canada
Prior art keywords
formaldehyde
isolating
mixtures
water
acetic acid
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.)
Expired
Application number
CA149,695A
Other languages
English (en)
Other versions
CA149695S (en
Inventor
Heinz Handte
Heinz Erpenbach
Klaus Gehrmann
Manfred Bredtmann
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.)
Hoechst AG
Original Assignee
Hoechst 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.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of CA978495A publication Critical patent/CA978495A/en
Expired legal-status Critical Current

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
    • C07C45/84—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by azeotropic distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CA149,695A 1971-09-11 1972-08-18 Process for isolating formaldehyde from mixtures of acetic acid, formaldehyde and water Expired CA978495A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712145517 DE2145517B1 (de) 1971-09-11 1971-09-11 Verfahren zur abtrennung von formaldehyd unter gewinnung reiner essigsaeure aus gemischen von essigsaeure, formeldehyd und wasser

Publications (1)

Publication Number Publication Date
CA978495A true CA978495A (en) 1975-11-25

Family

ID=5819298

Family Applications (1)

Application Number Title Priority Date Filing Date
CA149,695A Expired CA978495A (en) 1971-09-11 1972-08-18 Process for isolating formaldehyde from mixtures of acetic acid, formaldehyde and water

Country Status (11)

Country Link
US (1) US3838018A (fr)
JP (1) JPS4836113A (fr)
BE (1) BE788550A (fr)
CA (1) CA978495A (fr)
DE (1) DE2145517B1 (fr)
FR (1) FR2152849B1 (fr)
GB (1) GB1341371A (fr)
IT (1) IT969422B (fr)
NL (1) NL7211884A (fr)
RO (1) RO59445A (fr)
SU (1) SU437269A3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5283315A (en) * 1975-12-29 1977-07-12 Chisso Corp Purification of acetic acid
US4838998A (en) * 1985-01-09 1989-06-13 Rohm And Haas Company Process for separating sulfuric acid and carboxylic acids
FR3089222A1 (fr) * 2018-11-29 2020-06-05 Arkema France Purification de solutions aqueuses contenant du formaldehyde, et utilisation de la solution purifiee dans un procede de production d’acide acrylique
FR3100243B1 (fr) * 2019-08-28 2021-07-30 Arkema France Elimination du formaldehyde dans les eaux usees par un traitement d'oxydation

Also Published As

Publication number Publication date
US3838018A (en) 1974-09-24
GB1341371A (en) 1973-12-19
JPS4836113A (fr) 1973-05-28
IT969422B (it) 1974-03-30
BE788550A (fr) 1973-03-08
NL7211884A (fr) 1973-03-13
SU437269A3 (ru) 1974-07-25
FR2152849A1 (fr) 1973-04-27
DE2145517A1 (fr) 1973-01-25
RO59445A (fr) 1976-02-15
DE2145517B1 (de) 1973-01-25
FR2152849B1 (fr) 1978-02-10

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