CH283994A - Process for the production of a tanning agent. - Google Patents

Process for the production of a tanning agent.

Info

Publication number
CH283994A
CH283994A CH283994DA CH283994A CH 283994 A CH283994 A CH 283994A CH 283994D A CH283994D A CH 283994DA CH 283994 A CH283994 A CH 283994A
Authority
CH
Switzerland
Prior art keywords
tanning agent
production
weight
parts
naphthol
Prior art date
Application number
Other languages
German (de)
Inventor
Michael Dr Erlenbach
Adolf Dr Sieglitz
Original Assignee
Michael Dr Erlenbach
Adolf Dr Sieglitz
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 Michael Dr Erlenbach, Adolf Dr Sieglitz filed Critical Michael Dr Erlenbach
Publication of CH283994A publication Critical patent/CH283994A/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

  

  <B>Verfahren zur Herstellung eines</B>     Gerbstoffes.            Gegenstand    des Hauptpatentes ist ein Ver  fahren zur Herstellung eines Gerbstoffes  durch     Sulfierung    von     ss-Naphthol    in Gegen  wart von Kolophonium, Umsetzung des Ein  wirkungsgemisches mit einem Gemisch aus  Phenol und     Rohkresol    und Nachbehandlung  mit Formaldehyd bei erhöhter Temperatur.  



       Cregenstand    der vorliegenden Erfindung  ist ein Verfahren zur Herstellung eines Gerb  stoffes, das dadurch gekennzeichnet ist, dass  man     ss-Naphthol    in Gegenwart von Kolopho  nium     sulfiert,    das Einwirkungsgemisch mit       Rohphenolöl    umsetzt und mit Formaldehyd  bei erhöhter Temperatur nachbehandelt.  



  Der neue Gerbstoff ist ein dünnflüssiger,  dunkelbrauner Sirup.  



  <I>Beispiel:</I>  In 700 Gewichtsteile 100prozentiger Schwe  felsäure trägt man bei 90 bis 100  720 Ge  wichtsteile     ss-Naphthol    und 120 Gewichtsteile  Kolophonium ein, heizt. 11/2 Stunden auf 125 ,  kühlt auf 90  und gibt bei dieser Tempera-         tur    800 Gewichtsteile     Rohphenolöl    und an  schliessend 600 Gewichtsteile Wasser zu. Nach  Erhitzen auf 95  lässt man unter gutem Rüh  ren langsam 675 Gewichtsteile 30prozentigen  Formaldehyd und 600 Gewichtsteile Wasser  einlaufen. Mit 530 Gewichtsteilen einer     23pro-          zentigen        Ammoniaklösung    wird der Gerbstoff       neutralgestellt    und mit Essigsäure auf einen  geeigneten Säuregrad gebracht.

    



  Der Gerbstoff gerbt gut durch, gibt ein  braunes volles Leder von gutem :Stand und  eignet sich für die     Unterlederherstellung.  



  <B> Process for the production </B> of a tanning agent. The main patent is a process for the production of a tanning agent by sulphonation of ss-naphthol in the presence of rosin, implementation of the A mixture of effects with a mixture of phenol and crude cresol and aftertreatment with formaldehyde at elevated temperature.



       Cregenstand of the present invention is a process for producing a tanning material which is characterized in that ss-naphthol is sulfated in the presence of rosin, the reaction mixture is reacted with crude phenol oil and aftertreated with formaldehyde at elevated temperature.



  The new tanning agent is a thin, dark brown syrup.



  <I> Example: </I> In 700 parts by weight of 100 percent sulfuric acid, at 90 to 100, 720 parts by weight of ss-naphthol and 120 parts by weight of rosin are added, heating. 11/2 hours to 125, cools to 90 and at this temperature adds 800 parts by weight of crude phenol oil and then 600 parts by weight of water. After heating to 95, 675 parts by weight of 30 percent formaldehyde and 600 parts by weight of water are slowly run in with thorough stirring. The tanning agent is neutralized with 530 parts by weight of a 23 percent ammonia solution and brought to a suitable degree of acidity with acetic acid.

    



  The tanning agent tans well, gives a brown full leather of good standing and is suitable for the manufacture of underleather.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Gerbstof fes, dadurch gekennzeichnet, dass man ss-Naph- thol in Gegenwart von Kolophonium sulfiert, das Einwirkungsgemisch mit Rohphenolöl um setzt und mit Formaldehyd bei erhöhter Tem peratur nachbehandelt. Der neue Gerbstoff ist ein dünnflüssiger, dunkelbrauner Sirup. PATENT CLAIM: Process for the production of a tannin, characterized in that ss-naphthol is sulfated in the presence of rosin, the reaction mixture is converted with crude phenol oil and treated with formaldehyde at an elevated temperature. The new tanning agent is a thin, dark brown syrup.
CH283994D 1948-10-01 1949-06-24 Process for the production of a tanning agent. CH283994A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE283994X 1948-10-01
CH278295T 1949-06-24

Publications (1)

Publication Number Publication Date
CH283994A true CH283994A (en) 1952-06-30

Family

ID=25731816

Family Applications (1)

Application Number Title Priority Date Filing Date
CH283994D CH283994A (en) 1948-10-01 1949-06-24 Process for the production of a tanning agent.

Country Status (1)

Country Link
CH (1) CH283994A (en)

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