DE744080C - Process for the production of fatty acids by ozonizing olefin-containing hydrocarbon mixtures - Google Patents

Process for the production of fatty acids by ozonizing olefin-containing hydrocarbon mixtures

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Publication number
DE744080C
DE744080C DET50522D DET0050522D DE744080C DE 744080 C DE744080 C DE 744080C DE T50522 D DET50522 D DE T50522D DE T0050522 D DET0050522 D DE T0050522D DE 744080 C DE744080 C DE 744080C
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DE
Germany
Prior art keywords
fatty acids
olefin
production
containing hydrocarbon
hydrocarbon mixtures
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
DET50522D
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German (de)
Inventor
Dr Carl Thieme
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CARL THIEME DR
Original Assignee
CARL THIEME DR
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Filing date
Publication date
Application filed by CARL THIEME DR filed Critical CARL THIEME DR
Priority to DET50522D priority Critical patent/DE744080C/en
Application granted granted Critical
Publication of DE744080C publication Critical patent/DE744080C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/34Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with ozone; by hydrolysis of ozonides

Description

Verfahren zur Herstellung von Fettsäuren durch Ozonisierung von olefinhaltigen Kohlenwasserstoffgemischen Es ist bereits bekannt, die aus dem Braunkohlenschwelteer erhaltenen Braunkohlenteeröle zwecks Gewinnung von Fettsäuren mit Ozon zu behandeln (vgl. Patent 32q.663). Bei dieser Ozonisation der Braunkohlenteeröle entstanden viele wertlose Harze.Process for the production of fatty acids by ozonization of olefin-containing Hydrocarbon mixtures It is already known that from the brown coal tar to treat obtained brown coal tar oils for the purpose of obtaining fatty acids with ozone (see patent 32q.663). During this ozonization the brown coal tar oils were formed many worthless resins.

Nun wurde gefunden, daß -man zu viel reineren Fettsäuren gelangen kann, wenn man nicht die Kohlenwasserstoffe der Braunkohlenteeröle ozonisiert, sondern die Produkte, welche bei der Kohlehydrierung erhalten werden. Als besonders brauchbar haben sich die Cogasine, die durch Hydrierung von Kohlenoxyd in Gegenwart von Katalysatoren nach dem Fischer-Tropsch-Verfahren erhaltenen Kohlenwasserstoffe, erwiesen.It has now been found that much purer fatty acids can be obtained can, if one does not ozonize the hydrocarbons of the brown coal tar oils, but the products obtained from carbohydrate hydrogenation. As particularly useful have become the cogasins, which are produced by the hydrogenation of carbon monoxide in the presence of catalysts hydrocarbons obtained by the Fischer-Tropsch process.

Je reicher die Hydrierungsprodukte an Olefinen sind, desto bessere Ausbeuten an wasserunlöslichen Fettsäuren konnten erhalten werden. Die gebildeten Fettsäuren waren hellfarbig und frei von verharzenden Oxysäuren. Es bildetesich- immer, nur eine kleine Menge von den technisch so gut wie wertlosen wasserlöslichen Fettsäuren. Der nicht ozonisierbare Anteil der flüssigen oder halbfesten Hydrierungsprodukte wurde ohne Verluste und Farbänderung zurückgewonnen.The richer the hydrogenation products are in olefins, the better Yields of water-insoluble fatty acids could be obtained. The educated Fatty acids were light colored and free from resinifying oxy acids. It formed always, only a small amount of the technically as good as worthless water-soluble ones Fatty acids. The non-ozonizable part of the liquid or semi-solid hydrogenation products was recovered without loss or color change.

Man hat bereits vorgeschlagen, die Hydrierungsprodukte aus Kohle bzw. Kohlenoxyd durch Oxydation mit Sauerstoff in Gegenwart oder Abwesenheit von Katalysatoren in Fettsäuren überzuführen. Vergleichsversuche ergaben aber, daß bei dieser Oxydation, für die Temperaturen über roo ° erforderlich sind, eine teilweise Spaltung erfolgte, sö daß bedeutende Verluste an Kohlenwasserstoffen eintraten und . die Rückstände eine dunkle Farbe aufwiesen. Die bei diesem Verfahren gewonnene Menge wasserunlöslicher Fettsäuren war geringer als bei der Ozonisierung und ihre Qualität geringer, weil sie dunkle Farbe aufwiesen und mit verharzenden Oxysäuren gemischt waren. Überraschenderweise erwies sich also das Ozonisierungsverfahren in vielen Hinsichten als überlegen, insofern es zu oxysäurefreieni reinen Endprodukten führte und den nicht olefinhaltigen Anteil der Hy drierungsprodukte uriangegriffen ließ. Damit wird das Ozonisierungsverfahren trotz der etwas höheren Kosten der Ozonisierung konkurrenzfähig.It has already been proposed that the hydrogenation products from coal or Carbon dioxide by oxidation with oxygen in the presence or absence of catalysts to be converted into fatty acids. Comparative tests showed, however, that with this oxidation, for which temperatures above roo ° are required, a partial split took place, so that significant losses of hydrocarbons occurred and. the residues were dark in color. The amount of water-insoluble material obtained in this process Fatty acids were lower than in ozonization and their quality was lower because they were dark in color and mixed with resinifying oxyacids. Surprisingly proved So the ozonization process is considered to be superior in many respects it led to oxy-acid-free pure end products and the non-olefin-containing part the uranium hydrogenation products attacked. This is the ozonization process Competitive despite the slightly higher costs of ozonization.

Beispiel roo g eines durch Reduktion von Kohlenoxyd nach dem Fischer-Tropsch-Verfahren gewonnenen Dieselöls vom spezifischen Gewicht o,769 mit der Jodzahl i2,69, einer Viskosität von i,-.o bei 2o', einem Flammpunkt von 89' und einem Stockpunkt von -3,5' wurden bis zur Sättigung bei Zimmertemperatur ozonisiert. Das ozonisierte 01 wurde mit Natronlauge verseift und gleichzeitig so lange Luft durchgeleitet, bis die gebildeten Aldehyde zu Säuren oxydiert waren. Alsdann wurden die verseifbaren Öle durch . Ausschütteln mit Petroläther entfernt und aus dem Rückstand die Seifen mit 5oo/oigem Alkohol ausgezogen. Die ausgezogene Seife wurde nach Abdestillation des Alkohols mit Schwefelsäure versetzt. Es wurden 6,39 g einer wasserunlöslichen flüssigen Fettsäure -von hellgelber Farbe gewonnen neben z,i3 g wasserlöslicher Fettsäure. Die wasserunlösliche Fettsäure war in Petroläther vollkommen löslich, also frei von Oxy Säuren. Die .Menge des unverseifbaren bei der Ozonisierung nicht angegriffenen Öles betrug 9o g.Example roo g of a diesel oil obtained by reducing carbon oxide according to the Fischer-Tropsch process with a specific gravity of 0.769 with an iodine number of 1.69, a viscosity of i, -. O at 2o ', a flash point of 89' and a pour point from -3.5 ' were ozonated to saturation at room temperature. The ozonated oil was saponified with sodium hydroxide solution and air was passed through at the same time until the aldehydes formed were oxidized to acids. Then the saponifiable oils were through. Removed shaking with petroleum ether and extracted the soaps with 500% alcohol from the residue. After the alcohol had been distilled off, sulfuric acid was added to the drawn-out soap. 6.39 g of a water-insoluble liquid fatty acid of light yellow color were obtained in addition to z.13 g of water-soluble fatty acid. The water-insoluble fatty acid was completely soluble in petroleum ether, i.e. free of oxy acids. The amount of unsaponifiable oil that was not attacked during ozonization was 90 g.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Fettsäuren durch Ozonisierung von olefinhaltigen Kohlenwasserstoffgemischen in der Kälte, Spaltung der gebildeten Ozonide, zweckmäßig unter Oxydation und in Gegenwart von Alkalien und Abscheidung der gebildeten Fettsäuren aus den erhaltenen Seifen, dadurch gekennzeichnet, daß man dabei die durch Hydrierung von Kohle oder Kohlenoxyd erhältlichen olefinhaltigen Hydrierungserzeugnisse als Ausgangsstoffe verwendet. Claim: Process for the production of fatty acids by ozonization of olefin-containing hydrocarbon mixtures in the cold, cleavage of the ozonides formed, expediently with oxidation and in the presence of alkalis and separation of the fatty acids formed from the soaps obtained, characterized in that the soaps obtained by hydrogenation of coal or carbon monoxide available olefin-containing hydrogenation products are used as starting materials.
DET50522D 1938-06-12 1938-06-12 Process for the production of fatty acids by ozonizing olefin-containing hydrocarbon mixtures Expired DE744080C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET50522D DE744080C (en) 1938-06-12 1938-06-12 Process for the production of fatty acids by ozonizing olefin-containing hydrocarbon mixtures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET50522D DE744080C (en) 1938-06-12 1938-06-12 Process for the production of fatty acids by ozonizing olefin-containing hydrocarbon mixtures

Publications (1)

Publication Number Publication Date
DE744080C true DE744080C (en) 1944-01-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
DET50522D Expired DE744080C (en) 1938-06-12 1938-06-12 Process for the production of fatty acids by ozonizing olefin-containing hydrocarbon mixtures

Country Status (1)

Country Link
DE (1) DE744080C (en)

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