CH181692A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181692A
CH181692A CH181692DA CH181692A CH 181692 A CH181692 A CH 181692A CH 181692D A CH181692D A CH 181692DA CH 181692 A CH181692 A CH 181692A
Authority
CH
Switzerland
Prior art keywords
leather
red
dyeing
dyeing leather
dye
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 CH181692A publication Critical patent/CH181692A/en

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Description

  

      Verfahren    zum Durchfärben von Leer.    Es wurde gefunden, dass es gelingt,     Leder,     insbesondere Chromleder, vollständig durch  zufärben, wenn man dazu den roten Farb  stoff     aus,diazotiertem        2-Amino-1,4-dimethyl-          benzol    und     1-Oxynaphthalin-3,6,8-trisulfon-          säure    verwendet. Die Oberfläche des     Leders     wird rein rot, das Innere kräftig rot gefärbt.

      <I>Beispiel:</I>    Die neutralisierten Felle werden im     Fa.ss     mit 150 bis     2007o    Wasser von<B>65'C</B> ver  setzt; das Fass wird laufen gelassen und eine  Auflösung des Farbstoffes aus     diazotiertem          2-Amino-1,4-dimethylbenzol    und     1-Oxynaph-          1lialin-3,6,8-trisulfonsäure    durch die hohle  Achse zugegeben. Im allgemeinen genügen  1 bis 2     %    des auf das Falzgewicht berech-         neten    Farbstoffes, um     kräftige        Durchfär-          bungen    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.



      Process for dyeing empty. It has been found that it is possible to dye leather, especially chrome leather, completely if you add the red dye, diazotized 2-amino-1,4-dimethyl-benzene and 1-oxynaphthalene-3,6,8-trisulfone - acid used. The surface of the leather becomes pure red, the interior is colored bright red.

      <I> Example: </I> The neutralized skins are mixed with 150 to 2007o water at <B> 65'C </B> in the company; the barrel is run and a solution of the dye from diazotized 2-amino-1,4-dimethylbenzene and 1-oxynaph-1lialin-3,6,8-trisulfonic 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-dyeing.

   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 roten Farbstoff aus diazotiertem 2-Amino-1,4-dimethylbenzol und 1-Oxynaphthalin-3,6,8-trisulfonsäure ver wendet. Die Oberfläche des Leders wird rein rot, das Innere kräftig rot gefärbt. PATENT CLAIM: Process for dyeing leather, in particular chrome leather, characterized in that the red dye from diazotized 2-amino-1,4-dimethylbenzene and 1-oxynaphthalene-3,6,8-trisulfonic acid is used for this purpose. The surface of the leather becomes pure red, the interior is colored bright red.
CH181692D 1933-11-18 1934-11-14 Process for through-dyeing leather. CH181692A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181692X 1933-11-18
CH179042T 1934-11-14

Publications (1)

Publication Number Publication Date
CH181692A true CH181692A (en) 1935-12-31

Family

ID=25720232

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181692D CH181692A (en) 1933-11-18 1934-11-14 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181692A (en)

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