CH90871A - Process for the manufacture of a tanning material. - Google Patents

Process for the manufacture of a tanning material.

Info

Publication number
CH90871A
CH90871A CH90871DA CH90871A CH 90871 A CH90871 A CH 90871A CH 90871D A CH90871D A CH 90871DA CH 90871 A CH90871 A CH 90871A
Authority
CH
Switzerland
Prior art keywords
manufacture
tanning material
tanning
formaldehyde
sulfamide
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH90871A publication Critical patent/CH90871A/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

  

      Verfahren    zur Herstellung eines gerbenden     Stoffes.       Es wurde gefunden, dass durch Einwirkung       von.Formaldehyd    auf das     Sulfamid    der Formel  
EMI0001.0005     
    ein neuer,- wertvoller     Gerbstoff    erhalten wird.  Dieser stellt- ein in Wasser leicht lösliches  Pulver dar, welches Eiweiss aus wässeriger  Lösung stark ausfällt.  



  <I>Beispiel</I>       100        Teile        Formaldehyd        ä,        30        %        werden     in eine schwach alkalische Lösung von 392  Teilen des     Sulfamides    der Formel  
EMI0001.0015     
    erhalten durch Einwirkung von     2-Nitro-l-          toluol-4-sulfochlorid    auf die'     1-Naphtylamin-    '       6-sulfosäure    und darauffolgende     Reduktidn       eingetragen.

   Hierauf wird allmählich mit 600       Teilen        10        %iger        Essigsäure        versetzt        und        das     Ganze gerührt, bis der     Formaldehydgeruch    _  verschwunden ist,  Aus der so erhaltenen, mit .Mineralsäure  angesäuerten Lösung fällt Kochsalz den     Gerb-          Stoff    in Form einer öligen, bald fest werden  den Substanz aus. - .



      Process for the manufacture of a tanning material. It has been found that the action of formaldehyde on the sulfamide of the formula
EMI0001.0005
    a new, - valuable tannin is obtained. This is a powder which is easily soluble in water and which precipitates protein from an aqueous solution.



  <I> Example </I> 100 parts of formaldehyde - 30% are dissolved in a weakly alkaline solution of 392 parts of the sulfamide of the formula
EMI0001.0015
    obtained by the action of 2-nitro-l-toluene-4-sulfochloride on the '1-naphthylamine-' 6-sulfonic acid and the subsequent reductides entered.

   600 parts of 10% acetic acid are then gradually added and the whole is stirred until the formaldehyde odor has disappeared. From the resulting solution acidified with mineral acid, common salt precipitates the tannin in the form of an oily substance, which soon solidifies . -.

Claims (1)

PATENTANSPRUCF3 "Verfahren zur Herstellung eines Gerb Stoffes, dadurch gekennzeichnet, dass - man Formaldehyd auf das Sulfamid der Formel EMI0001.0035 einwirken lässt. Dieser Gerbstoff stellt -ein in Wasser leicht lösliches Pulver dar, welches Eiweiss aus wässeriger Lösung stark ausfällt. PATENT claim 3 "Process for the production of a tanning substance, characterized in that - one formaldehyde on the sulfamide of the formula EMI0001.0035 can act. This tanning agent is a powder which is easily soluble in water and which strongly precipitates protein from aqueous solution.
CH90871D 1915-02-16 1915-02-16 Process for the manufacture of a tanning material. CH90871A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH90871T 1915-02-16
CH90094T 1916-05-18

Publications (1)

Publication Number Publication Date
CH90871A true CH90871A (en) 1921-10-01

Family

ID=25704115

Family Applications (1)

Application Number Title Priority Date Filing Date
CH90871D CH90871A (en) 1915-02-16 1915-02-16 Process for the manufacture of a tanning material.

Country Status (1)

Country Link
CH (1) CH90871A (en)

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