CH192036A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH192036A
CH192036A CH192036DA CH192036A CH 192036 A CH192036 A CH 192036A CH 192036D A CH192036D A CH 192036DA CH 192036 A CH192036 A CH 192036A
Authority
CH
Switzerland
Prior art keywords
azo dye
production
new azo
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 CH192036A publication Critical patent/CH192036A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

Landscapes

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

Description

  

  Zusatzpatent zum Hauptpatent     Nr.    190423.    Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden,     dass    man einen neuen       Azofarbstoff    erhält, wenn man die     Diazover-          bindung    des     1-Aminobenzol-2,4-diäthyldisul-          fons    in saurer Lösung mit     1-Amii)o-5-oxy-          riaphthalin-7-stilfonsäure    vereinigt. Der neue  Farbstoff bildet ein dunkles Pulver, das sich  in Wasser mit violetter Farbe löst und Wolle  aus essigsaurem Bade in echten blauen Tönen  färbt.

      <I>Beispiel:</I>    <B>277</B> Teile     1-Aminobenzol-2,4-diätbyldistil-          fon    werden in verdünnter Essigsäure mit<B>250</B>  Teilen Salzsäure vom spezifischen Gewicht  <B>1,15</B> verrührt und langsam mit einer kon  zentrierten Lösung von<B>69</B> Teilen     Natrium-          nitrit    versetzt. In diese durch Zusatz von  Eis gekühlte     Diazolösung        lässt    man nun eine  schwach essigsauer gestellte Lösung von<B>239</B>  Teilen     1-Amino-5-oxynaphthalin-7-sulfonsäure            zutropfen.    Die     Farbstoffbildung    kann durch  Zusatz neutralisierender Mittel, wie z. B.

         Natriumacetat    oder     Natriumformiat,    beschleu  nigt werden. Der entstandene Farbstoff wird       abfiltriert,    durch Lösen in heissem Wasser  und Zugabe eines Alkalis,     Aussalzen    und  Filtrieren und Trocknen isoliert.



  Additional patent to main patent no. 190423. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the diazo compound of 1-aminobenzene-2,4-diethyl disulfone is combined in acidic solution with 1-amii) o-5-oxyriaphthalene-7-stilfonic acid. The new dye forms a dark powder that dissolves in water with a purple color and dyes wool from an acetic acid bath in true blue tones.

      <I> Example: </I> <B> 277 </B> parts of 1-aminobenzene-2,4-dietbyldistil- fon are in dilute acetic acid with <B> 250 </B> parts of hydrochloric acid with a specific gravity <B> 1.15 </B> and slowly mixed with a concentrated solution of <B> 69 </B> parts of sodium nitrite. A solution of 239 parts of 1-amino-5-oxynaphthalene-7-sulfonic acid, which has been made weakly acidic in acetic acid, is now added dropwise to this diazo solution, which has been cooled by adding ice. The dye formation can be achieved by adding neutralizing agents, such as. B.

         Sodium acetate or sodium formate, can be accelerated. The resulting dye is filtered off, isolated by dissolving in hot water and adding an alkali, salting out and filtering and drying.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 1-Aminobenzol- 2,4-diäthyldisulfons in saurem Medium mit 1-Amino-5-oxynaphtbalin-7-sulfonsäure ver einigt. Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit violetter Farbe löst und Wolle aus essigsaurem Bade in echten blauen Tönen färbt. Claim: Process for the preparation of a new azo dye, characterized in that the diazo compound of 1-aminobenzene-2,4-diethyldisulfone is combined in an acidic medium with 1-amino-5-oxynaphthalene-7-sulfonic acid. The new dye forms a dark powder that dissolves in water with a purple color and dyes wool from an acetic acid bath in true blue tones.
CH192036D 1935-09-07 1935-09-07 Process for the production of a new azo dye. CH192036A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH192036T 1935-09-07
CH190423T 1935-09-07

Publications (1)

Publication Number Publication Date
CH192036A true CH192036A (en) 1937-07-15

Family

ID=25721976

Family Applications (1)

Application Number Title Priority Date Filing Date
CH192036D CH192036A (en) 1935-09-07 1935-09-07 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH192036A (en)

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