CH181700A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181700A
CH181700A CH181700DA CH181700A CH 181700 A CH181700 A CH 181700A CH 181700D A CH181700D A CH 181700DA CH 181700 A CH181700 A CH 181700A
Authority
CH
Switzerland
Prior art keywords
leather
dyeing leather
dyeing
dye
aminobenzene
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 CH181700A publication Critical patent/CH181700A/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-Äthylamino-2-amino-          benzol-l-sulfonsäure    und     1-Oxynaphtha-Iin-          3,8-disulfonsäure    verwendet. Oberfläche und  Kern des Leders werden blau 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 aus     diazotierter     5 -     Äthylamino    - 2 -     aminobenzol-l-sulfonsäure     und     1-Ogynaphthalin-3,8-disulfonsäure    durch  die hohle Achse zugegeben. Im allgemeinen  genügen 1 bis 2 % des auf das     Falzgewicht       berechneten Farbstoffes, um kräftige Durch  färbungen zu erzielen. Nach 45 Minuten  setzt man den     Fatliquor    zu und     bewegt    wei  tere 45 Minuten.

   Handelt es sich um sehr  schwere Häute, so ist die Färbedauer ent  sprechend 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-ethylamino-2-aminobenzene-l-sulfonic acid and 1-oxynaphtha-Iin-3,8- disulfonic acid used. The surface and core of the leather are colored blue.

      <I> Example: </I> The neutralized skins are put in a barrel with 150 to 200% water at 65 ° C; The barrel is run and a solution of the dye from diazotized 5 - ethylamino - 2 - aminobenzene-1-sulfonic acid and 1-ogynaphthalene-3,8-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 stir for another 45 minutes.

   If the hides are very heavy, the dyeing time must be extended accordingly.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zum Durchfärben von Leder. insbesondere Chromleder, dadurch gekenn zeichnet, dass man dazu den blauen Farbstoff aus diazotierter 5-Äthylamino-2-aminoben- zol-l-sulfonsäure und 1-Oxynaphthalin-3,8- disulfonsäure verwendet. Oberfläche und Kern des Leders werden blau gefärbt. <B> PATENT CLAIM: </B> Process for dyeing leather. in particular chrome leather, characterized in that the blue dye of diazotized 5-ethylamino-2-aminobenzene-1-sulfonic acid and 1-oxynaphthalene-3,8-disulfonic acid is used for this purpose. The surface and core of the leather are colored blue.
CH181700D 1933-11-18 1934-11-14 Process for through-dyeing leather. CH181700A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181700X 1933-11-18
CH179042T 1934-11-14

Publications (1)

Publication Number Publication Date
CH181700A true CH181700A (en) 1935-12-31

Family

ID=25720240

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181700D CH181700A (en) 1933-11-18 1934-11-14 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181700A (en)

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