DE462373C - Method for bleaching montan wax - Google Patents

Method for bleaching montan wax

Info

Publication number
DE462373C
DE462373C DEJ30367D DEJ0030367D DE462373C DE 462373 C DE462373 C DE 462373C DE J30367 D DEJ30367 D DE J30367D DE J0030367 D DEJ0030367 D DE J0030367D DE 462373 C DE462373 C DE 462373C
Authority
DE
Germany
Prior art keywords
montan wax
sulfuric acid
chromic acid
solution
bleaching
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
DEJ30367D
Other languages
German (de)
Inventor
Dr Michael Jahrstorfer
Dr Wilhelm Pungs
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
Priority to DEJ30367D priority Critical patent/DE462373C/en
Application granted granted Critical
Publication of DE462373C publication Critical patent/DE462373C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G73/00—Recovery or refining of mineral waxes, e.g. montan wax

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fats And Perfumes (AREA)

Description

Verfahren zur Bleichung von Montanwachs Die Bleichung des rohen oder entharzten Montanwachses in schwefelsaurer Lösung mittels Chromsäure läßt sich infolge der bei dem 'ProzeB sich bildenden pastenartigen Massen nur schwer durchführen. Die Bildung dieser Massen wird durch Zusatz von organischen Lösungs- oder Emulgierungsmitteln, wie beispielsweise Benzol, Benzin, Tetrachlorkohlenstoff, zwar vermieden, indessen behindern, wie sich gezeigt hat, diese Zusätze später die auf elektrolytischem Wege erfolgende Wiedergewinnung der Chromsäurelösung.Method of bleaching montan wax The bleaching of the raw or Resin-removed montan wax in sulfuric acid solution by means of chromic acid can be used as a result the paste-like masses formed during the process are difficult to carry out. The formation of these masses is achieved through the addition of organic solvents or emulsifiers, such as benzene, gasoline, carbon tetrachloride, although avoided, however As has been shown, these additives later hinder the electrolytic way subsequent recovery of the chromic acid solution.

Es wurde nun gefunden, da$ bei der Gleichung von Montanwachs mit Chromsäure in schwefelsaurer Lösung die lästige Bildung der pastenartigen Massen in dem Oxydationsgefäß vermieden und die gebrauchte Chromsäure ohne weiteres regeneriert werden kann, wenn man das Montanwachs zuerst in einer Chromoxydsalzlösung suspendiert und dann mit Chromsäure bei Gegenwart von Schwefelsäure behandelt. Das Verfahren läßt sich z. B. in der Weise durchführen, da$ man das zu bleichende Montanwachs in der Wärme in einer Chromoxydsalzlösung, wozu man zweckmäßig eine bereits zur Oxydation benutzte reduzierte schwefelsaure Chromsäurelösung verwendet, verrührt. Zu der hierdurch gebildeten feinen beständigen Emulsion läßt man darauf unter Rühren die zur Gleichung des Montanwachses nötige Menge Chromsäurelösung zulaufen und erhitzt.It has now been found that in the equation of montan wax with chromic acid in sulfuric acid solution the troublesome formation of the pasty masses in the oxidation vessel avoided and the used chromic acid can be easily regenerated if the montan wax is first suspended in a chromium oxide salt solution and then with Chromic acid treated in the presence of sulfuric acid. The method can be z. B. perform in such a way that $ one the montan wax to be bleached in the heat in a chromium oxide salt solution, for which purpose one already used for oxidation reduced sulfuric acid chromic acid solution used, stirred. To the hereby The fine stable emulsion formed is then left with stirring to the equation add the required amount of chromic acid solution to the montan wax and heat it.

Beispiel. ioo kg rohes Montanwachs werden zusammen mit 5oo Litern einer schwefelsauren Chromsulfatlösung, die im Liter qoo g freie Schwefelsäure und 300 g Chromisulfat, gegebenenfalls noch etwas freie Chromsäure, enthält, unter Rühren auf etwa ioo° erhitzt. Unter. weiterer Temperatursteigerung läßt man därauf langsam ioo kg Chromsäure, die in verdünnter Schwefelsäure gelöst ist, zufließen. Nach einiger Zeit ist die Chromsäure verbraucht, und das gebleichte Montanwachs schwimmt über der schwefelsauren Chromlösung.Example. 100 kg of raw montan wax, together with 500 liters of a sulfuric acid chromium sulfate solution, which contains qoo g of free sulfuric acid and 300 g of chromium sulfate, possibly some free chromic acid, are heated to about 100 ° with stirring. Under. Further increase in temperature is then allowed to slowly flow in 100 kg of chromic acid, which is dissolved in dilute sulfuric acid. After a while the chromic acid is used up and the bleached montan wax floats above the sulfuric acid chromium solution.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur Bleichung von Montanwachs mit Chromsäure in schwefelsaurer Lösung, dadurch gekennzeichnet, da$ man das Montanwachs zuerst in einer Chromoxydsalzlösung suspendiert und dann mit Chromsäure bei Gegenwart von Schwefelsäure behandelt. PATENT CLAIMS: i. Process for bleaching montan wax with chromic acid in a sulfuric acid solution, characterized in that the montan wax is first suspended in a chromium oxide salt solution and then treated with chromic acid in the presence of sulfuric acid. 2. Ausführungsform des Verfahrens nach Anspruch i, dadurch gekennzeichnet, da$ man als Suspensionsmittel bereits zur Oxydation benutzte schwefelsaure Chromsäurelösung verwendet.2. embodiment of the method according to claim i, characterized in that it was already used as a suspending agent for oxidation sulfuric acid chromic acid solution is used.
DEJ30367D 1927-02-18 1927-02-18 Method for bleaching montan wax Expired DE462373C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEJ30367D DE462373C (en) 1927-02-18 1927-02-18 Method for bleaching montan wax

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ30367D DE462373C (en) 1927-02-18 1927-02-18 Method for bleaching montan wax

Publications (1)

Publication Number Publication Date
DE462373C true DE462373C (en) 1928-07-10

Family

ID=7203854

Family Applications (1)

Application Number Title Priority Date Filing Date
DEJ30367D Expired DE462373C (en) 1927-02-18 1927-02-18 Method for bleaching montan wax

Country Status (1)

Country Link
DE (1) DE462373C (en)

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