CH181708A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181708A
CH181708A CH181708DA CH181708A CH 181708 A CH181708 A CH 181708A CH 181708D A CH181708D A CH 181708DA CH 181708 A CH181708 A CH 181708A
Authority
CH
Switzerland
Prior art keywords
leather
orange
brown
dyeing leather
dyeing
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH181708A publication Critical patent/CH181708A/en

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Description

  

  verfahren zum Durchfärben von Leder.    Es wurde gefunden, dass es gelingt,       Leder,    insbesondere Chromleder, vollständig  durchzufärben, wenn man dazu den braun  orangen Farbstoff     2!#Nitro-4-chlor-3'-methyl-          ?'.1'-        diamino    -1,1'-     azobenzol    - 6'-     sulf        onsäure          verwendet.    Die Oberfläche des Leders wird  braunorange, das Innere tief braunorange  gefärbt.  



  <I>Beispiel:</I>  Die neutralisierten Felle werden im Fass  mit 150-200% Wasser von 67   C versetzt;  (las Fass wird laufen gelassen und eine Auf  lösung des Farbstoffes     2-Nitro-4-chlor-3'-          methyl    - 2', 4' -     diamino    - 1,1'     --azobenzol    - 6'     -          sulfonsäure    durch die hohle Achse zuge  geben. Im allgemeinen genügen 1-2% des    auf das Falzgewicht berechneten Farbstoffes,  um kräftige     Durchfärbungen    zu erzielen.  Nach 45 Minuten setzt man den     Fätliquor     zu und bewegt weitere 45 Minuten. Handelt  es sich um sehr schwere Häute, so ist die  Färbedauer entsprechend zu verlängern.



  process for dyeing leather. It has been found that leather, in particular chrome leather, can be completely dyed if the brown-orange dye 2! # Nitro-4-chloro-3'-methyl-? '. 1'-diamino -1,1'- azobenzene - 6'-sulfonic acid used. The surface of the leather is colored brown-orange, the inside deep brown-orange.



  <I> Example: </I> The neutralized skins are mixed with 150-200% water at 67 C in the barrel; (The barrel is allowed to run and a dissolution of the dye 2-nitro-4-chloro-3'-methyl - 2 ', 4' - diamino - 1,1 '--azobenzene - 6' - sulfonic acid is added through the hollow axis In general, 1-2% of the dye calculated on the shaved weight is sufficient to achieve strong staining. After 45 minutes, add the liquor and stir for another 45 minutes. If the skins are very heavy, the staining time is correspondingly too long extend.

Claims (1)

PATENTANSPRUCH: Verfahren zum Durchfärben von Leder, insbesondere Chromleder, - dadurch gekenn zeichnet, dass man dazu den braunorangen Farbstoff 2-Nitro-4-chlor; 3'-methyl-2',4'- diamino -1,1'- azobenzol - 6'- sulfonsäure ver wendet. Die Oberfläche des Leders wird braunorange, das Innere tief braunorange gefärbt. PATENT CLAIM: Process for dyeing leather, in particular chrome leather, - characterized in that one uses the brown-orange dye 2-nitro-4-chlorine; 3'-methyl-2 ', 4'-diamino -1,1'-azobenzene-6'-sulfonic acid is used. The surface of the leather is colored brown-orange, the inside deep brown-orange.
CH181708D 1933-12-07 1934-11-24 Process for through-dyeing leather. CH181708A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181708X 1933-12-07
CH179043T 1934-11-24

Publications (1)

Publication Number Publication Date
CH181708A true CH181708A (en) 1935-12-31

Family

ID=25720248

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181708D CH181708A (en) 1933-12-07 1934-11-24 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181708A (en)

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