DE470287C - Process for dissolving casein hardened by formaldehyde - Google Patents

Process for dissolving casein hardened by formaldehyde

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Publication number
DE470287C
DE470287C DEG68875D DEG0068875D DE470287C DE 470287 C DE470287 C DE 470287C DE G68875 D DEG68875 D DE G68875D DE G0068875 D DEG0068875 D DE G0068875D DE 470287 C DE470287 C DE 470287C
Authority
DE
Germany
Prior art keywords
formaldehyde
hardened
casein
dissolving casein
dissolving
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
DEG68875D
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German (de)
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEG68875D priority Critical patent/DE470287C/en
Application granted granted Critical
Publication of DE470287C publication Critical patent/DE470287C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Description

Verfahren zur Lösung von durch Formaldehyd gehärtetem Casein Die Verwertung der Abfälle bei der Verarbeitung von Kunsthorn aus formalingehärtetem Casein ist .ein bisher nur mangelhaft ;elöstes Problem. Das unplastisch und unlöslich gewordene gegerbte Casein läßt sich in wesentlichen Mengen nur mehr zu Düngezwecken verwerten.Process for dissolving casein hardened by formaldehyde Recovery the waste from processing artificial horn is made from formalin-hardened casein A problem that has so far only been poorly resolved. That which has become nonplastic and insoluble tanned casein can only be used for fertilization purposes in substantial quantities.

Es ist nun bereits ein Verfahren beschrilebe,n, das Formaldehyd,casein dadurch wieder plastisch zu machen, daß durch Vorbehandlung der Masse mit Proteinlösun.gsmittelneine Aufquellung bewirkt und durch Nachbehandlung mit Natriumbisulfit, das den Formaldehyd bindet, eine Entgerbung der Proteinsubstanz veranlaßt wird.A process has already been described, n, formaldehyde, casein to make it plastic again by pretreating the mass with protein solvents Swelling causes and after treatment with sodium bisulfite, which the formaldehyde binds, a tanning of the protein substance is caused.

Es ist also bekannt, daß schwache, z. B. 5prazentige Ammoniaklösungen selbst in der Wärme das Kunsthorn nicht aufschließen, d. h. nicht in Lösuaig bringen können.So it is known that weak, e.g. B. 5 percent ammonia solutions Do not unlock the artificial horn even in the warmth, d. H. do not dissolve can.

Dahingegen wurde nun die überraschende Beobachtung gemacht, daß bereits i oprozentige Ammoniaklösungen b .ei mittlerer Temperatur das Formaldehydcasein (gehärtetes Kunsthornl glatt auflösen. Das Ammoniak> läßt sich zum Teil durch andere Alkalien ersetzen. Die so erhaltenen Lösungen kann man nach dem Einengen und eventuellem Klären in bekannter Weise verwerten oder aus ihnen durch Caseinfällungsmittel die Eiweißmassen regenerieren.On the other hand, the surprising observation has now been made that already 100 percent ammonia solutions or formaldehyde casein at medium temperature (Dissolve hardened synthetic horn Replace alkalis. The solutions obtained in this way can be used after concentration and possibly Clarify in a known manner or utilize them by casein precipitants Regenerate protein masses.

Beispiele i. i kg Kunsthorn, grob zerkleinert, wird mit 5kg ioprozentigem wässerigen Ammoniak 2o bis 5o Stunden im Rührautoklaven bei etwa 7o' behandelt. Nach dieser Zeit ist vollkommene Lösung .entstanden.Examples i. i kg of synthetic horn, roughly chopped, is made with 5 kg of 10% aqueous ammonia treated in a stirred autoclave at about 70 'for 20 to 50 hours. After this time, the perfect solution has arisen.

z. 1 kg Kunsthorn wird mit 4. kg Ammoniak und i kg `Wasserglas von 38° W wie Oben aufgeschlossen.z. 1 kg of artificial horn is mixed with 4. kg of ammonia and 1 kg of water glass of 38 ° W open as above.

Claims (1)

PATENTANSPRUCH: Verfahren zur Lösung vorn durch Formaldehyd gehärtetem Casein, dadurch gekennzeichnet, daß man als Lösungsmittel. Ammoniaklösungen höherer I-Zonzentra.tianen als etwa _5 % verwendet, gegeben'.nfalls unter Erhitzung und unter Druck. PATENT CLAIM: Process for the solution of casein hardened by formaldehyde, characterized in that the solvent. Ammonia solutions of higher concentrations than about 5% are used, if necessary with heating and under pressure.
DEG68875D 1926-12-07 1926-12-07 Process for dissolving casein hardened by formaldehyde Expired DE470287C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG68875D DE470287C (en) 1926-12-07 1926-12-07 Process for dissolving casein hardened by formaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG68875D DE470287C (en) 1926-12-07 1926-12-07 Process for dissolving casein hardened by formaldehyde

Publications (1)

Publication Number Publication Date
DE470287C true DE470287C (en) 1929-01-10

Family

ID=7134513

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG68875D Expired DE470287C (en) 1926-12-07 1926-12-07 Process for dissolving casein hardened by formaldehyde

Country Status (1)

Country Link
DE (1) DE470287C (en)

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