CH181712A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181712A
CH181712A CH181712DA CH181712A CH 181712 A CH181712 A CH 181712A CH 181712D A CH181712D A CH 181712DA CH 181712 A CH181712 A CH 181712A
Authority
CH
Switzerland
Prior art keywords
leather
dyeing leather
dyeing
dye
orange
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 CH181712A publication Critical patent/CH181712A/en

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Description

  

  verfahren zum     Durchfärben    von     Lecde3-.       Es wurde gefunden, dass es gelingt,  Leder, insbesondere Chromleder vollständig  durchzufärben, wenn man dazu den orangen  Farbstoff     3-Nitro-4'-diäthylamino-l,l'-azo-          benzol-4,(i'-disulfonsäure    verwendet. Ober  fläche und Kern des Leders werden orange  gefärbt.

      <I>Beispiel:</I>    Die neutralisierten Felle werden im Fass  mit 150 bis 200     %    Wasser von 65   C ver  setzt; das Fass wird laufen gelassen und eine  Auflösung des Farbstoffes     3-Nitro-4'-di-          äthylamino-1,1'-        azobenzol-4,6'-        disulfonsäure     durch die hohle Achse zugegeben. Im all  gemeinen genügen 1 bis 2% des auf das    Falzgewicht berechneten Farbstoffes, um  kräftige     Durchfärbungen    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 Färbe  dauer entsprechend zu verlängern. -



  method for dyeing Lecde3-. It has been found that it is possible to dye leather, in particular chrome leather, completely if the orange dye 3-nitro-4'-diethylamino-l, l'-azobenzene-4, (i'-disulfonic acid is used. Surface and core of the leather are dyed orange.

      <I> Example: </I> The neutralized skins are put in a barrel with 150 to 200% water at 65 C; the barrel is allowed to run and a dissolution of the dye 3-nitro-4'-diethylamino-1,1'-azobenzene-4,6'-disulfonic acid is added through the hollow axis. In general, 1 to 2% of the dye calculated on the shaved weight is sufficient to achieve strong through-coloring. After 45 minutes, add the fat liquor and move 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 orangen Farb stoff 3-Nitro-4'-diäthylamino-1,1'-azobenzol- 4,6'-disulfonsäure verwendet. Oberfläche und Kern des Leders werden orange gefärbt. PATENT CLAIM: A method for dyeing leather, in particular chrome leather, characterized in that the orange dye 3-nitro-4'-diethylamino-1,1'-azobenzene-4,6'-disulfonic acid is used. The surface and core of the leather are colored orange.
CH181712D 1933-12-07 1934-11-24 Process for through-dyeing leather. CH181712A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181712X 1933-12-07
CH179043T 1934-11-24

Publications (1)

Publication Number Publication Date
CH181712A true CH181712A (en) 1935-12-31

Family

ID=25720252

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181712D CH181712A (en) 1933-12-07 1934-11-24 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181712A (en)

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