CH181703A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181703A
CH181703A CH181703DA CH181703A CH 181703 A CH181703 A CH 181703A CH 181703D A CH181703D A CH 181703DA CH 181703 A CH181703 A CH 181703A
Authority
CH
Switzerland
Prior art keywords
leather
dyeing leather
blue
dyeing
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 CH181703A publication Critical patent/CH181703A/en

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Description

  

  Verfahren zum Durchfärben von     Zeder.       Es wurde gefunden, dass es gelingt, Leder,  insbesondere Chromleder, vollständig durch  zufärben, wenn man dazu den blauen Farb  stoff aus     diazotierter        5-Diäthylamino-2-          aminobenzol-l-sulfonsäure    und     8-Amino-l-          oxynaphthalin-3,6-disulfonsäure    verwendet.  Die Oberfläche des Leders wird blau, das  Innere tiefblau gefärbt.

      <I>Beispiel:</I>    Die neutralisierten Felle werden im Fass  mit 150 bis<B>':)00%</B> Wasser von 65   C ver  setzt; das Fass wird laufen gelassen und eine  Auflösung des Farbstoffes aus     diazotierter     5 -     Diäthylamino    -2     -aminobenzol-l-sulf        onsäure     und     8-Amino-l-oxynaphthalin-3,6-disulfon-          säure    durch die hohle Achse zugegeben. Im    allgemeinen genügen 1 bis     2'%    des auf das  Falzgewicht berechneten Farbstoffes, um  kräftige     Durchfärbungen    zu erzielen.

   Nach       .15    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 of dyeing cedar. It has been found that it is possible to dye leather, especially chrome leather, completely if you add the blue dye from diazotized 5-diethylamino-2-aminobenzene-1-sulfonic acid and 8-amino-l-oxynaphthalene-3,6- disulfonic acid used. The surface of the leather is colored blue, the inside is deep blue.

      <I> Example: </I> The neutralized skins are put in a barrel with 150 to <B> ':) 00% </B> water at 65 C; the barrel is allowed to run and a solution of the dye from diazotized 5-diethylamino -2-aminobenzene-1-sulfonic acid and 8-amino-1-oxynaphthalene-3,6-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 15 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 blauen Farbstoff aus diazotierter 5-Diäthylamino-2-aminoben- zol-l-sulfonsäure und 8-Amino-l-oxynaph- thalin-3,6-disulfonsäure verwendet. Die Ober fläche .des Leders wird blau, das Innere tief blau gefärbt. PATENT CLAIM: A method for dyeing leather, in particular chrome leather, characterized in that one uses the blue dye from diazotized 5-diethylamino-2-aminobenzene-1-sulfonic acid and 8-amino-1-oxynaphthalene-3,6 -disulfonic acid is used. The surface of the leather turns blue, the inside a deep blue.
CH181703D 1933-11-18 1934-11-14 Process for through-dyeing leather. CH181703A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181703X 1933-11-18
CH179042T 1934-11-14

Publications (1)

Publication Number Publication Date
CH181703A true CH181703A (en) 1935-12-31

Family

ID=25720243

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181703D CH181703A (en) 1933-11-18 1934-11-14 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181703A (en)

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