CH179042A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH179042A
CH179042A CH179042DA CH179042A CH 179042 A CH179042 A CH 179042A CH 179042D A CH179042D A CH 179042DA CH 179042 A CH179042 A CH 179042A
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 CH179042A publication Critical patent/CH179042A/en

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Description

  

  Verfahren zum Durchfärben von Leder.    Es wurde gefunden, dass es gelingt,  Leder, insbesondere Chromleder vollständig  durchzufärben, wenn man dazu den blauen  Farbstoff aus     diazotiertem        1-Diäthylamino-          -1-aminobenzol    und     1-Oxynaphthalin-3,8-          disulfonsäure    verwendet. Die Oberfläche  des Leders wird blau, das Innere tiefblau  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     diazo-          tiertem        1-Diäthylamino-4-aminobenzol    und       1-Oxynaphthalin-3,8-disulfonsäure    durch die  hohle Achse zugegeben. Im allgemeinen ge  nügen 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     weitere 45 Minuten. Handelt es sich um  sehr schwere Häute, so ist die Färbedauer  entsprechend zu verlängern.



  Process for through-dyeing leather. It has been found that it is possible to dye leather, in particular chrome leather, completely if the blue dye of diazotized 1-diethylamino-1-aminobenzene and 1-oxynaphthalene-3,8-disulfonic acid is used for this purpose. 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 200% water at 65 C; the barrel is allowed to run and a solution of the dye from diazo-tated 1-diethylamino-4-aminobenzene and 1-oxynaphthalene-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)

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 1-Oxynaphthalin-3,8-disul- fonsäure verwendet. Die Oberfläche des Leders wird blau, das Innere tiefblau ge färbt. PATENT CLAIM: A process for dyeing leather, in particular chrome leather, characterized in that the blue dye from diazotized 1-diethylamino-4-aminobenzene and 1-oxynaphthalene-3,8-disulfonic acid is used. The surface of the leather is colored blue, the inside a deep blue.
CH179042D 1933-11-18 1934-11-14 Process for through-dyeing leather. CH179042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE179042X 1933-11-18

Publications (1)

Publication Number Publication Date
CH179042A true CH179042A (en) 1935-08-31

Family

ID=5706997

Family Applications (1)

Application Number Title Priority Date Filing Date
CH179042D CH179042A (en) 1933-11-18 1934-11-14 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH179042A (en)

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