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CH130903A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH130903A
CH130903A CH130903DA CH130903A CH 130903 A CH130903 A CH 130903A CH 130903D A CH130903D A CH 130903DA CH 130903 A CH130903 A CH 130903A
Authority
CH
Switzerland
Prior art keywords
solution
dye
soda
production
new dye
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH130903A publication Critical patent/CH130903A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00Complex metal compounds of azo dyes
    • C09B45/02Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14Monoazo compounds
    • C09B45/16Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      Verfahren    zur Herstellung eines neuen     Farbstoffes.       Es wurde gefunden, dass man einen neuen       Farbstoff    erhält, wenn man den durch alka  lische Kupplung erhaltenen     Azofarbstoff     aus     dianotiertem        5-Nitro-2-a.minophenol    und       2-Arnino-5-oxynaphthalin.-7-sulfosäuredurch          sseh"indlung    mit     Fluorchrom    und mittelst  eines Backprozesses in dessen Chromverbin  dung     überführt.     



  Zur Herstellung der Backkuchen ist es       zweckmässig,    die Lösungen oder Suspensionen  der Chromverbindungen der     chromierbare     Gruppen enthaltenden     Azofarbstoffe    in Ge  genwart des     Chromierungsmittels    zur     Trockne     einzudampfen, wobei auch während dem     Ein-          dampfen        teilweise        Chromierung    erfolgen       1u        a.nn.     



  Der so erhaltene Farbstoff ist in Soda  lösung und Natronlauge mit blauer Farbe       lti@lioh.    Mit Essigsäure     neutralisiert,    schlägt  die Farbe der Lösung nach grünblau um.  Wolle und Seide werden aus der Säurelösung  in     1)1aiz#tichig    grauen, Baumwolle aus der         sodaalkalischen    Lösung ebenfalls in denselben  Tönen     angefärbt.     



       Beispiel     4,04     Gewichtsteile    des durch alkalische  Kupplung erhaltenen     Azofarbstoffes    aus  dianotiertem     5-Nitro-2-aminophenol    und 2  Arnino-5-naphthol-7-sulfosäure werden in  400 Teilen Wasser kochend gelöst und mit.  der 3,04 Teilen     Cr"0,        entsprechenden    Menge       Fluorchrom    24     Stunden    unter     Rückfluss    ge  kocht.

   Nach dieser Zeit ist der anfänglich  mit violetter, dann mit blauer Farbe gelöste  Farbstoff zum grössten Teil aus der Reaktions  lösung ausgefallen, und zwar in nicht     fertil;          chromierter    Form. Die Reaktionslösung wird  hierauf auf dem Dampfbad zur Trockne ver  dampft, im     Trockenschrank    längere Zeit bei       1..15    bis<B>150'</B> gebacken und nach dem     Back-          prozess    gemahlen.



      Process for the production of a new dye. It has been found that a new dye is obtained if the azo dye obtained by alkali coupling from dianotated 5-nitro-2-a.minophenol and 2-amino-5-oxynaphthalene-7-sulfonic acid is treated with fluorochrome and converted into its chromium compound by means of a baking process.



  To produce the baking cakes, it is expedient to evaporate the solutions or suspensions of the chromium compounds of the azo dyes containing chromable groups to dryness in the presence of the chromating agent, with partial chromizing also taking place during the evaporation.



  The dye thus obtained is lti @ lioh in soda solution and sodium hydroxide solution with a blue color. Neutralized with acetic acid, the color of the solution changes to green-blue. Wool and silk are dyed from the acid solution in 1) gray, cotton from the soda-alkaline solution also in the same shades.



       Example 4.04 parts by weight of the azo dye obtained by alkaline coupling from dianotized 5-nitro-2-aminophenol and 2-amino-5-naphthol-7-sulfonic acid are dissolved in 400 parts of boiling water and mixed with. the 3.04 parts of Cr "0, the corresponding amount of fluorochrome, refluxed for 24 hours.

   After this time, most of the dye initially dissolved in violet, then in blue color has precipitated out of the reaction solution, namely in non-fertile; chromed shape. The reaction solution is then evaporated to dryness on the steam bath, baked in the drying cabinet for a long time at 1..15 to <B> 150 '</B> and then ground after the baking process.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch 'gekennzeichnet, do.ss rnan den durch alkalische Kupplung erhal tenen Azofarbstoff aus diazotiertem 5-Nitro- 2-aminophenol und 2-Amino-5-oxynaphtaIin- 7-sulfosäure durch Behandlung mit Fluor chrom und mittelst eines Backprozesses in dessen Chromverbindung überführt. PATENT CLAIM: Process for the preparation of a new dye, characterized in that the azo dye obtained by alkaline coupling from diazotized 5-nitro-2-aminophenol and 2-amino-5-oxynaphthalene-7-sulfonic acid by treatment with fluorine chromium and converted into its chromium compound by means of a baking process. Der so erhaltene Farbstoff ist in.Soda- lösung und Natronlauge mit blauer Farbe löslich. Mit Essigsäure neutralisiert, schlägt die Farbe der Lösung nach grünblau um. Wolle und Seide werden aus der Säurelösung in blaustichig grauen, Baumwolle aus der sodaalkalischen Lösung ebenfalls in denselben Tönen angefärbt. The dye thus obtained is soluble in soda solution and sodium hydroxide solution with a blue color. Neutralized with acetic acid, the color of the solution changes to green-blue. Wool and silk are dyed from the acid solution in a bluish gray, cotton from the soda-alkaline solution also in the same shades.
CH130903D 1927-09-03 1927-09-03 Process for the production of a new dye. CH130903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH130903T 1927-09-03

Publications (1)

Publication Number Publication Date
CH130903A true CH130903A (en) 1929-01-15

Family

ID=4389203

Family Applications (1)

Application Number Title Priority Date Filing Date
CH130903D CH130903A (en) 1927-09-03 1927-09-03 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH130903A (en)

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