CH192041A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH192041A
CH192041A CH192041DA CH192041A CH 192041 A CH192041 A CH 192041A CH 192041D A CH192041D A CH 192041DA CH 192041 A CH192041 A CH 192041A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
new azo
dye
acid
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 CH192041A publication Critical patent/CH192041A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (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-Amitiobenzol-2,4-methyl-ätbyl-          disulfons    in saurer Lösung mit     1-Amii)o-5-          oxynaphthaliii-2-sulfonsäure    vereinigt. Der  neue Farbstoff bildet ein dunkles Pulver, das  sich in Wasser mit blauer Farbe löst und  Wolle aus saurem Bade in echten blauen  Tönen färbt.  



  <I>Beispiel:</I>  <B>263</B> Teile     1.Aminobenzol-2,4-methyl-äthyl-          distilfon    werden in verdünnter Essigsäure mit  <B>250</B> Teilen Salzsäure vom spezifischen Ge  wicht<B>1,15</B> verrührt und langsam mit einer  konzentrierten Lösung von<B>69</B>     TeilenNatrium-          nitrit    versetzt.

   In     dies'e    durch Zusatz von Eis  gekühlte     Diazolösung        lässt    man eine neutra  lisierte Lösung von<B>239</B> Teilen     1-Amino-5-          oxynaplithalin-2-sulfonsäure        zutropfen.    Die       Farbstoffbildung    kann durch Zusatz neutra-         lisierender    Mittel, -wie z. B.     Natriumacetat     oder     Natriumformiat,    beschleunigt werden.  Man kann die Umsetzung auch bei mässig  erhöhter Temperatur durchführen.

   Der ent  standene Farbstoff wird     abfiltriert,    durch  Lösen in heissem Wasser und Zugabe eines       Alkalis,AussalzenundFiltriereriundTrockneii     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 when the diazo compound of 1-amitiobenzene-2,4-methyl-ethyl-disulfone is combined in acidic solution with 1-amii) o-5-oxynaphthalene-2-sulfonic acid. The new dye forms a dark powder that dissolves in water with a blue color and dyes wool from an acid bath in true blue tones.



  <I> Example: </I> <B> 263 </B> parts of 1. aminobenzene-2,4-methyl-ethyl-distilfone are mixed in dilute acetic acid with <B> 250 </B> parts of hydrochloric acid of the specific weight <B> 1.15 </B> stirred and slowly mixed with a concentrated solution of <B> 69 </B> parts of sodium nitrite.

   A neutralized solution of 239 parts of 1-amino-5-oxynaplithalin-2-sulfonic acid is 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, are accelerated. The reaction can also be carried out at a moderately elevated temperature.

   The resulting dye is filtered off, isolated by dissolving in hot water and adding an alkali, salting out and filtering and drying.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 1-Arriinoberizol- 2,4-methyl-äthyl-disulfons in saurem Medium mit 1-Amiiio-5-oxynaphthalin-2-stilfonsäure vereinigt. Der rieueFarbstoff bildet ein dunkles Pulver, das sich in Wasser mit blauer Farbe löst und Wolle aus saurem Bade in echten blauen Tönen färbt. Claim: Process for the production of a new azo dye, characterized in that the diazo compound of 1-aryinoberizole-2,4-methyl-ethyl-disulfone is mixed in an acidic medium with 1-amino-5-oxynaphthalene-2 -stilfonic acid combined. The white dye forms a dark powder that dissolves in water with a blue color and dyes wool from an acid bath in true blue tones.
CH192041D 1935-09-07 1935-09-07 Process for the production of a new azo dye. CH192041A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH190423T 1935-09-07
CH192041T 1935-09-07

Publications (1)

Publication Number Publication Date
CH192041A true CH192041A (en) 1937-07-15

Family

ID=25721981

Family Applications (1)

Application Number Title Priority Date Filing Date
CH192041D CH192041A (en) 1935-09-07 1935-09-07 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH192041A (en)

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