CH181695A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181695A
CH181695A CH181695DA CH181695A CH 181695 A CH181695 A CH 181695A CH 181695D A CH181695D A CH 181695DA CH 181695 A CH181695 A CH 181695A
Authority
CH
Switzerland
Prior art keywords
leather
dyeing leather
blue
dyeing
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 CH181695A publication Critical patent/CH181695A/en

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Description

  

  Verfahren zum Durchfärben von Leder.    Es wurde gefunden, dass es gelingt, Leder,       insbesondere    Chromleder, vollständig durch  zufärben, wenn man dazu den blauen Farb  stoff aus     diazotiertem        1-Diäthylamino-4-          aminobenzol    und     8-Amino-l-oxynaphthalin-          3,6-disulfonsäure    verwendet. Die Oberfläche  des     Leders    wird blau, das Innere     fahlblau     gefärbt.

      <I>Beispiel:</I>    Die neutralisierten Felle werden im Fass  mit 1.50 bis 200     %    Wasser von<B>65'</B> C ver  setzt; das Fass wird laufen gelassen und eine  Auflösung des Farbstoffes aus     diazotiertem          1-Diäthylamino-4-aminobenzol    und     8-Amino-          1-ogynaphthalin-3,6-.disulfonsäure    durch die  hohle Achse zugegeben. Im allgemeinen ge  nügen 1 bis 2 % des auf das Falzgewicht be-    rechneten     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.



  Process for through-dyeing leather. It has been found that leather, especially chrome leather, can be completely colored by using the blue dye from diazotized 1-diethylamino-4-aminobenzene and 8-amino-1-oxynaphthalene-3,6-disulfonic acid. The surface of the leather is colored blue, the interior pale blue.

      <I> Example: </I> The neutralized skins are put in a barrel with 1.50 to 200% water of <B> 65 '</B> C; the barrel is run and a solution of the dye of diazotized 1-diethylamino-4-aminobenzene and 8-amino-1-ogynaphthalene-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 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 blauen Farb stoff aus diazotiertem 1-Diäthylamino-4- aminobenzol und 8-Amino-l-oxynaphthalin- 3,6-disulfonsäure verwendet. Die Oberfläche des Leders wird blau, das Innere fahlblau gefärbt. PATENT CLAIM: Process for dyeing leather, in particular chrome leather, characterized in that the blue dye from diazotized 1-diethylamino-4-aminobenzene and 8-amino-l-oxynaphthalene-3,6-disulfonic acid is used. The surface of the leather is colored blue, the interior pale blue.
CH181695D 1933-11-18 1934-11-14 Process for through-dyeing leather. CH181695A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181695X 1933-11-18
CH179042T 1934-11-14

Publications (1)

Publication Number Publication Date
CH181695A true CH181695A (en) 1935-12-31

Family

ID=25720235

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181695D CH181695A (en) 1933-11-18 1934-11-14 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181695A (en)

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