CH302030A - Process for the preparation of an acidic monoazo dye. - Google Patents

Process for the preparation of an acidic monoazo dye.

Info

Publication number
CH302030A
CH302030A CH302030DA CH302030A CH 302030 A CH302030 A CH 302030A CH 302030D A CH302030D A CH 302030DA CH 302030 A CH302030 A CH 302030A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
acidic
mol
acidic monoazo
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH302030A publication Critical patent/CH302030A/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

  

  Verfahren     zur        Herstellung        eines        sauren        Monoazofarbstoffes.       Gegenstand des vorliegenden Patentes ist.  ein Verfahren zur Herstellung     eines    sauren       Monoazofarbstoffes,    welches darin besteht,  dass man 1     Mol    der     Diazoverbindung    aus     4-          tertiär    -     Amyl    -1-     aminobenzol    mit 1     Mol          1-Oxy    -8- (2',4'-     dichlor)

          -benzoylaminonaphtha-          lin-3,5-disulfonsäure    kuppelt.  



  Im nachstehenden Beispiel bedeuten die  Teile     (xewichtsteile.     



  <I>Beispiel:</I>  16,3 Teile     4-tertiär-Amyl-l-aminobenzol     werden wie üblich     diazotiert.    Man vereinigt die  klare     Diazolösung    in Gegenwart von über  sühüssigem     Natriumbicarbonat    bei 0-5  C mit  einer wässerigen Lösung aus 50 Teilen 1-Oxy       8-(2',4'-dichlor)-benzoylaminonaphthalin-3,5-          ciisulfonsäure.    Nach beendeter     Kupplung    wird  der ausgeschiedene Farbstoff     abfiltriert    und       getrocknet.       Der neue saure     Monoazofarbstoff    ist ein  rotes Pulver, das sich in heissem Wasser mit  roter Farbe löst und Wolle,

   Seide und-     syn-          thetische        Polyamidfasern    aus neutralem oder  sehwach saurem Bad in echten, leuchtend  roten Tönen färbt.



  Process for the preparation of an acidic monoazo dye. The subject of the present patent is. a process for the preparation of an acidic monoazo dye, which consists in that 1 mol of the diazo compound from 4-tertiary - amyl -1-aminobenzene with 1 mol of 1-oxy -8- (2 ', 4'-dichloro)

          -benzoylaminonaphthalin-3,5-disulfonic acid couples.



  In the example below, the parts (xparts by weight.



  <I> Example: </I> 16.3 parts of 4-tertiary-amyl-1-aminobenzene are diazotized as usual. The clear diazo solution is combined in the presence of excess sodium bicarbonate at 0-5 ° C. with an aqueous solution of 50 parts of 1-oxy 8- (2 ', 4'-dichloro) benzoylaminonaphthalene-3,5-ciisulfonic acid. After the coupling has ended, the precipitated dye is filtered off and dried. The new acidic monoazo dye is a red powder that dissolves in hot water with a red color and wool,

   Dyes silk and synthetic polyamide fibers from neutral or weakly acidic baths in real, bright red tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines sauren Monoazofarbstoffes, dadurch gekennzeichnet, dass man 1 Mol der Diazoverbindung aus 4-ter- tiär-Amyl-l-aminobenzol mit 1 Mol 1-Oxy-8- (2',4'-dichl or) - benzoylaminonaphthalin-3, 5-di- sulfonsäure kuppelt. PATENT CLAIM: Process for the preparation of an acidic monoazo dye, characterized in that 1 mol of the diazo compound from 4-tertiary-amyl-1-aminobenzene with 1 mol of 1-oxy-8- (2 ', 4'-dichloro) - benzoylaminonaphthalene-3, 5-disulfonic acid couples. Der neue saure Monoazofarbstoff ist ein rotes Pulver, das sieh in heissem Wasser mit roter Farbe löst und Wolle, Seide und syn thetische Polyamidfasern aus neutralem oder schwach saurem Bad in echten, leuchtend roten Tönen färbt. The new acidic monoazo dye is a red powder that dissolves in hot water with a red color and dyes wool, silk and synthetic polyamide fibers from neutral or weakly acidic baths in real, bright red tones.
CH302030D 1951-07-18 1951-07-18 Process for the preparation of an acidic monoazo dye. CH302030A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH297410T 1951-07-18
CH302030T 1951-07-18

Publications (1)

Publication Number Publication Date
CH302030A true CH302030A (en) 1954-09-30

Family

ID=25733837

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302030D CH302030A (en) 1951-07-18 1951-07-18 Process for the preparation of an acidic monoazo dye.

Country Status (1)

Country Link
CH (1) CH302030A (en)

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