CH181698A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181698A
CH181698A CH181698DA CH181698A CH 181698 A CH181698 A CH 181698A CH 181698D A CH181698D A CH 181698DA CH 181698 A CH181698 A CH 181698A
Authority
CH
Switzerland
Prior art keywords
leather
dyeing leather
dyeing
diazotized
methoxybenzene
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 CH181698A publication Critical patent/CH181698A/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 blaustichig  roten Farbstoff aus     diazotierter    4-     Amino-l-          methoxybenzol-2-sulfonsäure    und     1-Oxynaph-          ihalin-3,8-disulfonsäure    verwendet. Die Ober  fläche des     Leders    wird blaustichig rot, das  Innere kräftig rot gefärbt.

      <I>Beispiel:</I>    Die neutralisierten Felle werden im Fass  mit<B>150</B> bis 200% Wasser von<B>650</B> C versetzt:  das Fass wird laufen gelassen und eine Auf  lösung des Farbstoffes aus     diazotierter          4-Amino-l-methoxybenzol-2-sulfonsäure    und       1-Oxynaphthalin-3,8-disulfonsäure    durch die  hohle Achse zugegeben. Im allgemeinen ge-         nügen    1 bis     2/00'    des auf das Falzgewicht  berechneten Farbstoffes, um kräftige     Durch-          fä.rbungen    zu erzielen.

   Nach 45 Minuten  setzt man den     Fatliquor    zu und bewegt wei  tere 45     yTinuten.    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, in particular chrome leather, can be completely colored by using the bluish red dye of diazotized 4-amino-1-methoxybenzene-2-sulfonic acid and 1-oxynaphihaline-3,8-disulfonic acid . The surface of the leather turns a bluish red, the inside a bright red color.

      <I> Example: </I> The neutralized skins are mixed with <B> 150 </B> to 200% water at <B> 650 </B> C in the barrel: the barrel is allowed to run and the Dye from diazotized 4-amino-1-methoxybenzene-2-sulfonic acid and 1-oxynaphthalene-3,8-disulfonic acid added through the hollow axis. In general, 1 to 2/00 of the dye calculated on the shaved weight is sufficient to achieve strong through-dyeing.

   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 den blaustichig roten Farbstoff aus diazotierter 4-Amino-l-me- thoxybenzol-2-sulfonsäure und 1-Oxynaph- thalin-3,8-disulfonsäure verwendet. Die Ober fläche des Leders wird blaustichig rot, das Innere kräftig rot gefärbt. PATENT CLAIM: A process for dyeing leather, in particular chrome leather, characterized in that the bluish red dye made from diazotized 4-amino-1-methoxybenzene-2-sulfonic acid and 1-oxynaphthalene-3,8-disulfonic acid is used. The surface of the leather turns a bluish red, the inside a bright red color.
CH181698D 1933-11-18 1934-11-14 Process for through-dyeing leather. CH181698A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181698X 1933-11-18
CH179042T 1934-11-14

Publications (1)

Publication Number Publication Date
CH181698A true CH181698A (en) 1935-12-31

Family

ID=25720238

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181698D CH181698A (en) 1933-11-18 1934-11-14 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181698A (en)

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