CH191440A - Process for the preparation of a chromium-containing dye. - Google Patents

Process for the preparation of a chromium-containing dye.

Info

Publication number
CH191440A
CH191440A CH191440DA CH191440A CH 191440 A CH191440 A CH 191440A CH 191440D A CH191440D A CH 191440DA CH 191440 A CH191440 A CH 191440A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
water
preparation
way
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH191440A publication Critical patent/CH191440A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pyridine Compounds (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines     ehromhaltigen        Farbstoffes.            Gegenstand    des vorliegenden     Patentes    ist  ein     TTerfahren    zur     Darstellung    eines     chrom-          haltigen        Farbstoffes,    welches dadurch ge  kennzeichnet     ist"dass    man den Farbstoff, der  erhältlich ist,

   wenn man     4-Amino-l.8-          naphthalsäureanhydrid.    mit .Schwefelsäure  monohydrat     sulfiert    und die so     erhaltene            Sulfosäure    mit     2-Ogy-3-amnino-l-benzoesäure     in Gegenwart von Wasser und     Natrium-          bisulfit    erhitzt, mit     ühromabgebenden    Mit  teln behandelt.  



  <I>Beispiel:</I>  50     Gewichtsteile    des Farbstoffes folgen  der     Konstitution     
EMI0001.0022     
    (der dadurch erhältlich ist,     .dass    man     4-Amino-          1.8-naphthalsä.ureanhy,drid    mit     Schwefel-          säuremonohydrat        sulfiert    und die so erhal-         tene        Sulfosäure    mit     2-Ogy-3-amno-l-benzoe-          säure    in     Gegenwart    von     Wasser    und       Natriumbisulfit    erhitzt)

   werden in     Wasser         und Soda als Na-Salz gelöst. Dazu gibt man  eine Lösung von     Chromfluorid,    entsprechend  1.6 Gewichtsteilen Chromoxyd, und hält so  lange im Sieden, bis alles klar in Lösung  gegangen ist. Die Lösung wird dann voll  ständig zur Trockne verdampft. Man erhält  ein     grüngelbes    Pulver,     das        in        Wasser    leicht  löslich     ist    und z.

   B. auf Wolle nach der für       chromhaltige    Farbstoffe üblichen Färbe  methode     grünetichig    gelbe, egale     Färbungen     von guter Wasch-, Walk-, Schweiss-, See  wasser- und     Lichtechtheit    ergibt.



  Process for the preparation of a dye containing Ehrom. The subject of the present patent is a process for the preparation of a chromium-containing dye, which is characterized by "that the dye that is available is

   if you have 4-amino-1.8-naphthalic anhydride. sulfated with .Sulfuric acid monohydrate and the sulfonic acid thus obtained heated with 2-Ogy-3-amnino-1-benzoic acid in the presence of water and sodium bisulfite, treated with ühromabgebenden Mit means.



  <I> Example: </I> 50 parts by weight of the dye follow the constitution
EMI0001.0022
    (which can be obtained by sulfating 4-amino-1,8-naphthalic acid ureanhydride with sulfuric acid monohydrate and the sulfonic acid obtained in this way with 2-Ogy-3-amno-1-benzoic acid in the presence of water and sodium bisulfite heated)

   are dissolved in water and soda as sodium salt. Add a solution of chromium fluoride, corresponding to 1.6 parts by weight of chromium oxide, and keep it boiling until everything has gone into solution. The solution is then completely evaporated to dryness. A green-yellow powder is obtained which is readily soluble in water and which is e.g.

   B. on wool according to the dyeing method customary for chromium-containing dyes, greenish yellow, level dyeings of good wash, milled, sweat, sea water and lightfastness results.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines chrom- baltigen Farbstoffes, dadurch gekennzeich net, dass man den Farbstoff, der erhältlich s ;, wenn man 4-Amino-l.8-naphthalsäure- anhydri4 mit %hwefelsäuremonohydrat sul- fiert und die so erhaltene Sulfosäure mit 2-Oxy-3-amdno-l-benzoesäure in Gegenwart von Waseer und Natriumbisulfit erhitzt, mit chromabgebenden Mitteln behandelt. PATENT CLAIM: Process for the preparation of a chromium-containing dye, characterized in that the dye that is obtainable when 4-amino-1.8-naphthalic acid anhydrate is sulphated with% sulfuric acid monohydrate and the sulphonic acid obtained in this way with 2-Oxy-3-amdno-1-benzoic acid heated in the presence of water and sodium bisulfite, treated with chromium-releasing agents. Der so erhaltene Farbstoff ist ein 01r1111- _gelbes Pulver, das in Wasser leicht löslich ist und auf Wolle grünstichig gelbe Färbun gen von guten Echtheitseigenschaften liefert. The dye obtained in this way is a yellow powder which is readily soluble in water and provides greenish yellow dyeings with good fastness properties on wool. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man den Farbstoff als Natriumealz in wässriger Lösung mit Chrom- fluorid siedend erhitzt, bis vollkommene Lö sung; eingetreten ist. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the dye is boiled as a sodium alkali in an aqueous solution with chromium fluoride until it is completely dissolved; has occurred.
CH191440D 1934-10-11 1935-10-08 Process for the preparation of a chromium-containing dye. CH191440A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE191440X 1934-10-11
CH187695T 1935-10-08

Publications (1)

Publication Number Publication Date
CH191440A true CH191440A (en) 1937-06-15

Family

ID=25721569

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191440D CH191440A (en) 1934-10-11 1935-10-08 Process for the preparation of a chromium-containing dye.

Country Status (1)

Country Link
CH (1) CH191440A (en)

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