CH90872A - Process for the manufacture of a tanning material. - Google Patents

Process for the manufacture of a tanning material.

Info

Publication number
CH90872A
CH90872A CH90872DA CH90872A CH 90872 A CH90872 A CH 90872A CH 90872D A CH90872D A CH 90872DA CH 90872 A CH90872 A CH 90872A
Authority
CH
Switzerland
Prior art keywords
manufacture
tanning material
tanning
sulfamide
formula
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 CH90872A publication Critical patent/CH90872A/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  
EMI0001.0002     
    ein neuer wertvoller Gerbstoff erhalten wird.  Dieser stellt ein in Wasser leicht lösliches  Pulver dar, welches Eiweiss aus wässeriger       Lösunz    stark     ausfällt.       <I>Beispiel:

  </I>       50        Teile        Formaldehyd        ä        30        %        werden        in     eine schwach alkalische Lösung von 429  Teilen -des     Sulfamides    der Formel  
EMI0001.0014     
    erhalten durch Einwirkung von     2-Nitro-l-          toluol-4-sulfochlorid    auf die     Sulfanilsäure,          daräuffolgende    Reduktion .und nochmalige    Einwirkung- von     p-Toluolsulfochlorid,        @    einge  tragen,

   das     _    Ganze mit Salzsäure schwach  sauer gestellt und 12     Stunden        digeriert,    bis  der     Formaldehydgeruch    verschwunden ist.  



  Aus der so erhaltenen,     mit--3flineralsäu.re     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
EMI0001.0002
    a new valuable tanning agent is obtained. This is a powder that is easily soluble in water, which protein precipitates strongly from aqueous solution. <I> example:

  </I> 50 parts of formaldehyde - 30% - are in a weakly alkaline solution of 429 parts of the sulfamide of the formula
EMI0001.0014
    obtained by the action of 2-nitro-l-toluene-4-sulfochloride on the sulfanilic acid, subsequent reduction and repeated exposure to p-toluenesulfochloride, @ entered,

   The whole thing is made slightly acidic with hydrochloric acid and digested for 12 hours until the formaldehyde odor has disappeared.



  From the thus obtained solution, acidified with - 3flineralsäu.re: table salt precipitates the tannin in the form of an oily substance; the substance soon becomes solid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Gerb- Stoffes, dadurch gekennzeichnet, dass man Fnrmaldehvd auf das Sulfamid der Formel EMI0001.0032 einwirken lässt. Dieser Gerbstoff stellt ein in Wasser leicht lösliches Pulver dar, welches Eiweiss aus wässeriger Lösung stark ausfällt.. PATENT CLAIM: Process for the production of a tanning substance, characterized in that Fnrmaldehvd is based on the sulfamide of the formula EMI0001.0032 can act. This tanning agent is a powder which is easily soluble in water and which strongly precipitates protein from aqueous solution.
CH90872D 1916-05-18 1916-05-18 Process for the manufacture of a tanning material. CH90872A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH90094T 1916-05-18
CH90872T 1916-05-18

Publications (1)

Publication Number Publication Date
CH90872A true CH90872A (en) 1921-10-01

Family

ID=25704116

Family Applications (1)

Application Number Title Priority Date Filing Date
CH90872D CH90872A (en) 1916-05-18 1916-05-18 Process for the manufacture of a tanning material.

Country Status (1)

Country Link
CH (1) CH90872A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890096A (en) * 1952-08-11 1959-06-09 Bohme Fettchemie Gmbh Tanning process for hides and furs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890096A (en) * 1952-08-11 1959-06-09 Bohme Fettchemie Gmbh Tanning process for hides and furs

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