GB1005439A - Removal of formic acid from aqueous formaldehyde solutions containing an alcohol and/or the formal thereof - Google Patents

Removal of formic acid from aqueous formaldehyde solutions containing an alcohol and/or the formal thereof

Info

Publication number
GB1005439A
GB1005439A GB4562761A GB4562761A GB1005439A GB 1005439 A GB1005439 A GB 1005439A GB 4562761 A GB4562761 A GB 4562761A GB 4562761 A GB4562761 A GB 4562761A GB 1005439 A GB1005439 A GB 1005439A
Authority
GB
United Kingdom
Prior art keywords
solution
alcohol
formaldehyde
alkaline earth
hydroxide
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
GB4562761A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1005439A publication Critical patent/GB1005439A/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
    • C07C45/85—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/88—Separation; Purification; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification of at least one compound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Formic acid is removed from an aqueous solution of formaldehyde also containing an alcohol having an atmospheric boiling point of at least 95 DEG C., said alcohol being free from any substituent group other than a hydroxyl group, that is reactive with formaldehyde under the conditions of the process and on the formal of the alcohol, by contacting the solution with an alkaline earth oxide or hydroxide and filtering the solution. The formaldehyde may be recovered by heating the solution thus obtained. The amount of water in the starting material may be 5 to 15% by weight of the total; the formaldehyde may be 15 to 40% by weight, the remainder being alcohol, such a solution being optionally obtained by mixing the constituent components. The purified formaldehyde may be recovered from the solution after alkaline earth oxide/hydroxide addition and filtration, by distilling off water and pyrolyzing the hemiformal. Primary or secondary aliphatic or cycloaliphatic C5 to C10 alcohols of atmospheric boiling point at least 120 DEG C. are preferred, cyclohexanal being especially suitable and described in the examples. The contact between the alkaline earth metal oxide or hydroxide may be effected by adding the solid or a slurry thereof to the solution or by passage of the solution through a static bed of alkaline earth metal hydroxide. U.S.A. Specification 2,848,500 is referred to.
GB4562761A 1960-12-28 1961-12-20 Removal of formic acid from aqueous formaldehyde solutions containing an alcohol and/or the formal thereof Expired GB1005439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7884560A 1960-12-28 1960-12-28

Publications (1)

Publication Number Publication Date
GB1005439A true GB1005439A (en) 1965-09-22

Family

ID=22146554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4562761A Expired GB1005439A (en) 1960-12-28 1961-12-20 Removal of formic acid from aqueous formaldehyde solutions containing an alcohol and/or the formal thereof

Country Status (2)

Country Link
DE (1) DE1185600B (en)
GB (1) GB1005439A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993702A (en) * 1975-09-29 1976-11-23 Phillips Petroleum Company Production of unsaturated alcohols

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB573051A (en) * 1941-08-30 1945-11-05 American Cyanamid Co Purification and stabilization of formaldehyde
BE560841A (en) * 1953-07-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993702A (en) * 1975-09-29 1976-11-23 Phillips Petroleum Company Production of unsaturated alcohols

Also Published As

Publication number Publication date
DE1185600B (en) 1965-01-21

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