CH181710A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181710A
CH181710A CH181710DA CH181710A CH 181710 A CH181710 A CH 181710A CH 181710D A CH181710D A CH 181710DA CH 181710 A CH181710 A CH 181710A
Authority
CH
Switzerland
Prior art keywords
leather
dyeing leather
dyeing
orange
yellow
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 CH181710A publication Critical patent/CH181710A/en

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Description

  

  Verfahren zum Durchfärben von Zeder.    Es wurde gefunden, dass es gelingt,       Leder,    insbesondere Chromleder, vollständig  durchzufärben, wenn man dazu den gelb  orangen Farbstoff     3-Nitro-4'-diäthylamino-          1,1'-        azobenzol-6,6'-        disulfonsäure    verwendet.  Oberfläche und Kern des Leders werden  gelborange gefärbt.

      <I>Beispiel:</I>    Die neutralisierten Felle werden im Fass  mit     150-200%    Wasser von 65   C versetzt;  das Fass wird laufen gelassen und eine Auf  lösung des Farbstoffes     3-Nitro-4'-diäthyl-          amino        1,1'-azobenzol-6,6'-disulfonsäure    durch  die hohle Achse zugegeben. Im allgemeinen       geniigen    1-2     %    des auf das Falzgewicht    berechneten Farbstoffes, um kräftige Durch  färbungen zu erzielen. Nach 45 Minuten  setzt man den     Fatliquor    zu und bewegt  weitere 45 Minuten. Handelt es sich um  sehr schwere Häute, so ist die Färbedauer  entsprechend zu verlängern.



  Method of dyeing cedar. It has been found that leather, in particular chrome leather, can be completely dyed if the yellow-orange dye 3-nitro-4'-diethylamino-1,1'-azobenzene-6,6'-disulfonic acid is used. The surface and core of the leather are colored yellow-orange.

      <I> Example: </I> The neutralized skins are mixed with 150-200% water at 65 C in the barrel; the barrel is allowed to run and a solution of the dye 3-nitro-4'-diethyl-amino 1,1'-azobenzene-6,6'-disulfonic acid is added through the hollow axis. In general, 1-2% of the dye calculated on the shaved weight is sufficient to achieve strong colorings. After 45 minutes, add the fat liquor and stir for another 45 minutes. If the hides are very heavy, the dyeing time must be extended accordingly.

Claims (1)

PATENTANSPRUCH: Verfahren zum Durchfärben von Leder, insbesondere Chromleder, dadurch gekenn zeichnet, dass man dazu den gelborangen Farbstoff 3-Nitro-4'-diäthylamino-1,1'-azo- benzol-6,6'-disulfonsäure verwendet. Ober fläche und Kern des Leders werden gelb orange gefärbt. PATENT CLAIM: A process for dyeing leather, in particular chrome leather, characterized in that the yellow-orange dye 3-nitro-4'-diethylamino-1,1'-azo-benzene-6,6'-disulfonic acid is used. The surface and core of the leather are colored yellow-orange.
CH181710D 1933-12-07 1934-11-24 Process for through-dyeing leather. CH181710A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181710X 1933-12-07
CH179043T 1934-11-24

Publications (1)

Publication Number Publication Date
CH181710A true CH181710A (en) 1935-12-31

Family

ID=25720250

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181710D CH181710A (en) 1933-12-07 1934-11-24 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181710A (en)

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