CH181696A - Process for through-dyeing leather. - Google Patents

Process for through-dyeing leather.

Info

Publication number
CH181696A
CH181696A CH181696DA CH181696A CH 181696 A CH181696 A CH 181696A CH 181696D A CH181696D A CH 181696DA CH 181696 A CH181696 A CH 181696A
Authority
CH
Switzerland
Prior art keywords
leather
violet
amino
red
dyeing leather
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 CH181696A publication Critical patent/CH181696A/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 rotvioletten  Farbstoff aus     diazotiertem        3-Amino-4-(ss,y-di-          oxy)-propyloxy-l-methylbenzol    und     8-Amino-          1-oxynaphthalin-3,6-disulfonsäure    verwendet.  Die Oberfläche des     Leders    wird rein rot  violett, das Innere tief rotviolett     gefärbt.     



  <I>Beispiel:</I>  Die neutralisierten Felle werden im Fass  mit<B>150</B> bis<B>200%</B> Wasser von<B>65'</B> C ver  setzt: das Fass wird laufen gelassen und eine       Auflösung        es    Farbstoffes aus     diazotiertem          a    -     Amino-4-        (ss,y-        dioxy)-propyloxy-l-methyl-          benzol    und     8-Amino-l-oxynaphthalin-3,6-          disulfonsäure    durch die hohle Achse zu  gegeben.

   Im allgemeinen     genügen    1 bis 2    des auf das Falzgewicht berechneten Farb  stoffes, um kräftige     Durchfärbungen    zu er  zielen. Nach 45 Minuten setzt man den     Fat-          liquor    zu und bewegt     weitere    45 Minuten.  Handelt es sich um sehr schwere Häute, so  ist .die Färbedauer     entsprechend    zu ver  längern.



      Process for through-dyeing leather. It has been found that leather, especially chrome leather, can be completely colored by adding the red-violet dye of diazotized 3-amino-4- (ss, y-dioxy) propyloxy-1-methylbenzene and 8-amino - 1-oxynaphthalene-3,6-disulfonic acid used. The surface of the leather becomes pure red-violet, the inside is colored deep red-violet.



  <I> Example: </I> The neutralized skins are mixed with <B> 150 </B> to <B> 200% </B> water of <B> 65 '</B> C in the barrel: that The barrel is run and a dissolution of the dye from diazotized a-amino-4- (ss, y-dioxy) -propyloxy-1-methylbenzene and 8-amino-1-oxynaphthalene-3,6-disulfonic acid through the hollow axis to be given.

   In general, 1 to 2 of the dyestuff 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 rotvioletten Farbstoff aus diazotiertem 3-Amino-4-(ss,y-di- oxy)-propyloxy-l-methylbenzol und 8-Amino- 1-oxynaphthalin-3,6-disulfonsäure verwendet. Die Oberfläche des Leders wird rein rot violett, das Innere tief rotviolett gefärbt. PATENT CLAIM: A method for dyeing leather, in particular chrome leather, characterized in that for this purpose the red-violet dye from diazotized 3-amino-4- (ss, y-dioxy) -propyloxy-1-methylbenzene and 8-amino-1 -oxynaphthalene-3,6-disulfonic acid used. The surface of the leather becomes pure red-violet, the inside is colored deep red-violet.
CH181696D 1933-11-18 1934-11-14 Process for through-dyeing leather. CH181696A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE181696X 1933-11-18
CH179042T 1934-11-14

Publications (1)

Publication Number Publication Date
CH181696A true CH181696A (en) 1935-12-31

Family

ID=25720236

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181696D CH181696A (en) 1933-11-18 1934-11-14 Process for through-dyeing leather.

Country Status (1)

Country Link
CH (1) CH181696A (en)

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