CH181707A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181707A
CH181707A CH181707DA CH181707A CH 181707 A CH181707 A CH 181707A CH 181707D A CH181707D A CH 181707DA CH 181707 A CH181707 A CH 181707A
Authority
CH
Switzerland
Prior art keywords
leather
yellow
dyeing leather
dye
dyeing
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 CH181707A publication Critical patent/CH181707A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren     zuin    Durchfärben von Zeder.    Es wurde gefunden, dass es gelingt,  Leder,     insbesondere    Chromleder, vollständig  durchzufärben, wenn man dazu den gelben  Farbstoff     3-Nitro-3'-ch@or-2',4'-diamino-1,1'-          azobenzol-6.6'-disulfonsäure    verwendet. Die  Oberfläche des Leders wird fahl gelb, das  Innere gelborange gefärbt.

      <I>Beispiel:</I>    Die neutralisierten Felle werden im Fass  mit     150-200%    Wasser von 65   C versetzt;  das Fass wird laufen gelassen und eine Auf  lösung des Farbstoffes     3-Nitro-3'-chlor-2',4'-          diamino    -     IX-        azobenzol    -     6,6'-        disulfonsäure     durch die hohle Achse zugegeben. Im allge  meinen genügen     1-2.%    des auf das Falz-         gewicht    berechneten Farbstoffes, um kräf  tige     Durchfärbungen    zu erzielen. Nach 45  Minuten setzt man den     Fatliquor    zu und be  wegt weitere 45 Minuten.

   Handelt es sich  um sehr schwere Häute, so ist die Färbe  dauer entsprechend zu verlängern.



  Process for inking through cedar. It has been found that it is possible to dye leather, in particular chrome leather, completely if the yellow dye 3-nitro-3'-ch @ or-2 ', 4'-diamino-1,1'-azobenzene-6.6' -disulfonic acid is used. The surface of the leather turns pale yellow, the interior yellow-orange.

      <I> Example: </I> The neutralized skins are mixed with 150-200% water at 65 C in the barrel; the barrel is run and a dissolution of the dye 3-nitro-3'-chloro-2 ', 4'-diamino-IX-azobenzene-6,6'-disulfonic acid is added through the hollow axis. In general, 1-2% 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 gelben Farb stoff 3 - N itro - 3'- chlor - 2', 4'- diamino -1,1'- azobenzol-6.6'-disulfonsäure verwendet. Die Oberfläche des Leders wird fahl gelb, das Innere gelborange gefärbt. PATENT CLAIM: A process for dyeing leather, in particular chrome leather, characterized in that the yellow dye 3 - N itro - 3'- chloro - 2 ', 4'-diamino -1,1'- azobenzene-6.6'- disulfonic acid used. The surface of the leather turns pale yellow, the interior yellow-orange.
CH181707D 1933-12-07 1934-11-24 Process for through-dyeing leather. CH181707A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181707X 1933-12-07
CH179043T 1934-11-24

Publications (1)

Publication Number Publication Date
CH181707A true CH181707A (en) 1935-12-31

Family

ID=25720247

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181707D CH181707A (en) 1933-12-07 1934-11-24 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181707A (en)

Similar Documents

Publication Publication Date Title
CH181707A (en) Process for through-dyeing leather.
CH181711A (en) Process for through-dyeing leather.
CH181706A (en) Process for through-dyeing leather.
CH179043A (en) Process for through-dyeing leather.
CH181710A (en) Process for through-dyeing leather.
CH181705A (en) Process for through-dyeing leather.
CH181712A (en) Process for through-dyeing leather.
CH181703A (en) Process for through-dyeing leather.
CH179042A (en) Process for through-dyeing leather.
CH181709A (en) Process for through-dyeing leather.
CH181704A (en) Process for through-dyeing leather.
CH181695A (en) Process for through-dyeing leather.
CH181699A (en) Process for through-dyeing leather.
DE643088C (en) Process for chrome tanning
CH181700A (en) Process for through-dyeing leather.
CH181697A (en) Process for through-dyeing leather.
CH181693A (en) Process for through-dyeing leather.
CH181701A (en) Process for through-dyeing leather.
CH181698A (en) Process for through-dyeing leather.
CH181708A (en) Process for through-dyeing leather.
CH181702A (en) Process for through-dyeing leather.
CH181692A (en) Process for through-dyeing leather.
CH181696A (en) Process for through-dyeing leather.
CH181694A (en) Process for through-dyeing leather.
AT148982B (en) Process for tanning with chromium salts of polybasic aromatic acids.