GB399529A - Improvements in or relating to the treatment of aliphatic acids - Google Patents

Improvements in or relating to the treatment of aliphatic acids

Info

Publication number
GB399529A
GB399529A GB677832A GB677832A GB399529A GB 399529 A GB399529 A GB 399529A GB 677832 A GB677832 A GB 677832A GB 677832 A GB677832 A GB 677832A GB 399529 A GB399529 A GB 399529A
Authority
GB
United Kingdom
Prior art keywords
extract
solvent
water
azeotropic mixture
effected
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
GB677832A
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.)
Acordis UK Ltd
Original Assignee
British Celanese Ltd
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 British Celanese Ltd filed Critical British Celanese Ltd
Priority to GB677832A priority Critical patent/GB399529A/en
Publication of GB399529A publication Critical patent/GB399529A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/50—Selection of substances for gas fillings; Specified pressure thereof
    • 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
    • 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
    • C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes
    • C08L91/08—Mineral waxes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/16—Hydrocarbons
    • C10L1/1625—Hydrocarbons macromolecular compounds
    • C10L1/1633—Hydrocarbons macromolecular compounds homo- or copolymers obtained by reactions only involving carbon-to carbon unsaturated bonds
    • C10L1/1641—Hydrocarbons macromolecular compounds homo- or copolymers obtained by reactions only involving carbon-to carbon unsaturated bonds from compounds containing aliphatic monomers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
    • C11C5/00—Candles
    • C11C5/002—Ingredients

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Acetic and other aliphatic acids are concentrated by extracting with a solvent of low boiling-point such as ether, wholly or partly removing this solvent from the extract, and then adding an entraining agent and distilling so as to remove the water as an azeotropic mixture of lower boiling-point than the acid. Preferably the solvent for making the extract is one which does not form an azeotropic mixture with water. The extraction may be effected as a batch process or continuously in counter-current, and the removal of the solvent from the extract may be effected by the heat of condensation of the azeotropic mixture. The azeotropic distillation may be effected in any manner, and the entraining agent may be added in liquid or vapour form; entraining agent separating in the condenser may be returned for the removal of more water. Suitable entraining agents are benzene, ethylene dichloride, dichlorethylene, trichlorethylene, ethyl acetate, butyl acetate and mixtures thereof. In an example, a 30 per cent acetic acid is extracted with ether, the ether is distilled off from the extract with utilization of the heat of condensation of the azeotropic mixture, and the partially concentrated acid is distilled with benzene to remove the water.
GB677832A 1932-03-07 1932-03-07 Improvements in or relating to the treatment of aliphatic acids Expired GB399529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB677832A GB399529A (en) 1932-03-07 1932-03-07 Improvements in or relating to the treatment of aliphatic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB677832A GB399529A (en) 1932-03-07 1932-03-07 Improvements in or relating to the treatment of aliphatic acids

Publications (1)

Publication Number Publication Date
GB399529A true GB399529A (en) 1933-10-09

Family

ID=9820560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB677832A Expired GB399529A (en) 1932-03-07 1932-03-07 Improvements in or relating to the treatment of aliphatic acids

Country Status (1)

Country Link
GB (1) GB399529A (en)

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