GB306097A - Process for the manufacture of aliphatic carboxylic acids from aqueous solutions thereof - Google Patents

Process for the manufacture of aliphatic carboxylic acids from aqueous solutions thereof

Info

Publication number
GB306097A
GB306097A GB5040/29A GB504029A GB306097A GB 306097 A GB306097 A GB 306097A GB 5040/29 A GB5040/29 A GB 5040/29A GB 504029 A GB504029 A GB 504029A GB 306097 A GB306097 A GB 306097A
Authority
GB
United Kingdom
Prior art keywords
acid
manufacture
carboxylic acids
aqueous solutions
aliphatic carboxylic
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
GB5040/29A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB306097A publication Critical patent/GB306097A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic 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)

Abstract

306,097. I. G. Farbenindustrie Akt.- Ges. Feb. 15, 1928, [Convention, date]. Addition to 300,923. Propionic, butyric, isobutyric, and other aliphatic acids other than acetic acid are concentrated by distilling with a halogenated hydrocarbon, which forms with water an azeotropic mixture of lower boiling-point than the acid, the added liquid being advantageously returned to the still until the water has been removed, after which the halogen compound is separated from the concentrated acid by distillation. In the examples, propionic acid is distilled with dichlorethylene, butyric acid with trichlorethylene, and isobutyric acid with chloroform. -
GB5040/29A 1928-02-15 1929-02-14 Process for the manufacture of aliphatic carboxylic acids from aqueous solutions thereof Expired GB306097A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE306097X 1928-02-15

Publications (1)

Publication Number Publication Date
GB306097A true GB306097A (en) 1930-06-16

Family

ID=6121016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5040/29A Expired GB306097A (en) 1928-02-15 1929-02-14 Process for the manufacture of aliphatic carboxylic acids from aqueous solutions thereof

Country Status (1)

Country Link
GB (1) GB306097A (en)

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