CH233100A - Process for the production of a tanning agent. - Google Patents

Process for the production of a tanning agent.

Info

Publication number
CH233100A
CH233100A CH233100DA CH233100A CH 233100 A CH233100 A CH 233100A CH 233100D A CH233100D A CH 233100DA CH 233100 A CH233100 A CH 233100A
Authority
CH
Switzerland
Prior art keywords
tanning agent
production
rosin
isomeric
reacted
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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 CH233100A publication Critical patent/CH233100A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical tanning by organic agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Description

  

      Yerfaliren    zur Herstellung eines     Gerbstoffes.       Gegenstand des Hauptpatentes ist ein Ver  fahren zur     Herstellung    eines Gerbstoffes  durch     Sulfonierung    eines grosstechnisch an  fallenden, die drei     isomeren        Kresole    enthal  tenden Gemisches,     Umsetzung    des     Sulfonie-          rungsproduktes    mit Kolophonium und Be  handlung des Umsetzungsproduktes mit     sul-          fonierenden    Mitteln.  



       Gegenstand    der vorliegenden     Erfindung     ist ein Verfahren zur Herstellung eines Gerb  stoffes, das dadurch gekennzeichnet ist, dass  man ein grosstechnisch anfallendes, die drei       isomeren        Kresole    und die sechs     isomeren          Xylenole    enthaltendes Gemisch sulfoniert,  das     Sulfonierungsprodukt    mit Kolophonium  umsetzt und das Umsetzungsprodukt mit     sul-          fonierenden    Mitteln behandelt. Der neue  Gerbstoff ist eine in Wasser leicht lösliche  Masse.  



  <I>Beispiel:</I>  Man     sulfiert    60 Gewichtsteile     eines    bei  der     Kohlenhydrierung        gewonnenen        Kresolöls,       das etwa<B>70%</B> eines Gemisches der drei     iso-          meren        Kresole    und<B>30%</B> eines Gemisches der  sechs     isomeren        Xylenole    enthält, durch Be  handlung mit 42 Gewichtsteilen Monohydrat.

         Dann    werden in die noch warme     Sulfierungs-          masse        portionsweise    120 Gewichtsteile deut  sches Kolophonium eingetragen. Nach halb  stündiger     Nachrührzeit,    wobei man auf     etwa     75  abkühlt,     sulfiert    man mit 125 Gewichts  teilen Monohydrat und lässt dann 1     Stunde          nachrühren.    Die Hauptmenge der überschüs  sigen Schwefelsäure wird darauf durch Aus  waschen nach Ausfällung des Gerbstoffes  entfernt.

   Der mit Salmiakgeist neutralisierte  Gerbstoff wird dann mit einer Lösung von  20 Gewichtsteilen kristallisierter     Oxalsäure     in 120     Gewichtsteilen    Wasser angesäuert und  mit 275 Gewichtsteilen eines synthetischen  Gerbstoffes versetzt, der nach den Angaben  der     deutschen        Patentschrift    Nr. 453431 durch       Umsetzung    eines noch flüssigen     Phenol-          h'ormaldehyd-Kondensationsproduktes    mit       Benzylnaphthalinsulfosäure    erhalten wurde.



      Yerfaliren for the manufacture of a tanning agent. The subject of the main patent is a process for the production of a tanning agent by sulphonation of an industrially produced mixture containing the three isomeric cresols, reaction of the sulphonation product with rosin and treatment of the reaction product with sulphonating agents.



       The present invention relates to a process for the production of a tanning material, which is characterized in that an industrially produced mixture containing the three isomeric cresols and the six isomeric xylenols is sulfonated, the sulfonation product is reacted with rosin and the reaction product is reacted with sulphonating agents treated. The new tanning agent is a mass that is easily soluble in water.



  <I> Example: </I> 60 parts by weight of a cresol oil obtained in the course of carbohydrates are sulfated, which is about <B> 70% </B> of a mixture of the three isomeric cresols and <B> 30% </B> of one Contains mixture of six isomeric xylenols by treatment with 42 parts by weight of monohydrate.

         Then 120 parts by weight of German rosin are added in portions to the still warm sulphonation mass. After half an hour of stirring, cooling to about 75, the sulfonation is carried out with 125 parts by weight of monohydrate and the mixture is then stirred for 1 hour. The majority of the surplus sulfuric acid is then removed by washing off after the tannin has precipitated.

   The tanning agent neutralized with ammonia is then acidified with a solution of 20 parts by weight of crystallized oxalic acid in 120 parts by weight of water and 275 parts by weight of a synthetic tanning agent is added which, according to the information in German Patent No. 453431, is produced by reacting a still liquid phenol- Condensation product with benzylnaphthalene sulfonic acid was obtained.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Gerb stoffes, dadurch gekennzeichnet, dass man ein grosstechnisch anfallendes, die drei isomeren Kresole und die sechs isomeren Xylenole ent haltendes Gemisch sulfoniert, das Sulfonie- rungsprodukt mit Kolophonium umsetzt und das Umsetzungsprodukt mit sulfonierenden Mitteln behandelt. Der neue Gerbstoff ist eine in Wasser leicht lösliche Masse. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadnrüh gekennzeichnet, dass man das Kolophonium mit der noch warmen Sulfonierungsmasse umsetzt. PATENT CLAIM: A process for the production of a tanning material, characterized in that a large-scale mixture containing the three isomeric cresols and the six isomeric xylenols is sulfonated, the sulfonation product is reacted with rosin and the reaction product is treated with sulfonating agents. The new tanning agent is a mass that is easily soluble in water. SUBClaim: Process according to patent claim, characterized in that the rosin is reacted with the sulphonation mass which is still warm.
CH233100D 1939-03-18 1941-02-28 Process for the production of a tanning agent. CH233100A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE233100X 1939-03-18
CH226933T 1941-11-28

Publications (1)

Publication Number Publication Date
CH233100A true CH233100A (en) 1944-06-30

Family

ID=25727041

Family Applications (1)

Application Number Title Priority Date Filing Date
CH233100D CH233100A (en) 1939-03-18 1941-02-28 Process for the production of a tanning agent.

Country Status (1)

Country Link
CH (1) CH233100A (en)

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