CH302811A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH302811A
CH302811A CH302811DA CH302811A CH 302811 A CH302811 A CH 302811A CH 302811D A CH302811D A CH 302811DA CH 302811 A CH302811 A CH 302811A
Authority
CH
Switzerland
Prior art keywords
parts
monoazo dye
preparation
mol
oxethyl
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 CH302811A publication Critical patent/CH302811A/en

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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
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

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

Description

  

      Verfahren        zur        Herstellung        eines        Monoazofarbstoffes.            Gegenstand    des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Monoazo-          farbstoffes,    das dadurch     gekennzeichnet    ist,

    dass man 1     Mol        diazotiertes        1-Amino-4-methyl-          sulfonyInaphthalin    mit 1     Mol        N-Oxäthyl-N-          eyanäthylaminobenzol        kuppelt.     



  Der so erhaltene     Monoazofarbstoff    ist neu  und eignet sich zum Färben von Lacken,       Acetatkunstseide    und synthetischen     Polyamid-          und    Polyesterfasern.  



  Im nachfolgenden Beispiel bedeuten die  Teile Gewichtsteile.  



       Beispiel:     5 Teile     Natriumnitrit    werden bei 60  in 60  Teile konzentrierte Schwefelsäure eingetragen.  Die Lösung wird auf 10-20  abgekühlt und  bei dieser Temperatur mit 65 Teilen konzen  trierter Essigsäure verdünnt. Man trägt bei  10-15  allmählich 15 Teile     1-Amino-4-rn.ethyl-          sulfonyInaphthalin    in die Lösung ein und     fügt     alsdann nochmals 65 Teile konzentrierte Essig  säure     hinzu.    Nach Ablauf von einer Stunde  stumpf man     das    überschüssige Nitrit mit    3 Teilen Harnstoff ab     und,

  lädt    die     Diazotie-          rungsmasse    auf 750 Teile Eis aus. Die nun  mehr vorliegende Suspension wird mit 135  Teilen     kristallisiertem        Natriumacetat    neutral  estellt und hierauf mit einer Lösung von 13  Teilen     N-Oxäthyl-N-cyanäthylaminobenzol    in       150        Teilen        Wasser        und        14        Teilen        30        %        iger          Salzsäure    vereinigt.

   Nach erfolgter Kupplung  filtriert man den erhaltenen Farbstoff ab,  wäscht ihn säurefrei     und.    trocknet ihn.  



  Der neue     Monoazofarbstoff    färbt Acetat  kunstseide und     Polyamidfasern    in kräftig  orangen Tönen von sehr guten Echtheitseigen  schaften.



      Process for the preparation of a monoazo dye. The subject of the present patent is a process for the preparation of a monoazo dye, which is characterized in

    that 1 mole of diazotized 1-amino-4-methylsulfonyinaphthalene is coupled with 1 mole of N-oxethyl-N-eyanethylaminobenzene.



  The monoazo dye obtained in this way is new and is suitable for dyeing paints, acetate rayon and synthetic polyamide and polyester fibers.



  In the following example, the parts are parts by weight.



       Example: 5 parts of sodium nitrite are added to 60 parts of concentrated sulfuric acid at 60. The solution is cooled to 10-20 and diluted at this temperature with 65 parts of concentrated acetic acid. At 10-15, 15 parts of 1-amino-4-malethylsulfonylinaphthalene are gradually introduced into the solution and then another 65 parts of concentrated acetic acid are added. After one hour, the excess nitrite is blunted with 3 parts of urea and

  loads the diazotization mass onto 750 parts of ice. The suspension that is now present is neutralized with 135 parts of crystallized sodium acetate and then combined with a solution of 13 parts of N-oxethyl-N-cyanoethylaminobenzene in 150 parts of water and 14 parts of 30% strength hydrochloric acid.

   After coupling has taken place, the dye obtained is filtered off, washed acid-free and washed. dries him.



  The new monoazo dye dyes acetate, artificial silk and polyamide fibers in strong orange shades with very good fastness properties.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man 1 Mol diazotiertes 1-Amino-4-methylsulfonyl naphthalin mit 1 Mol N-Oxäthyl-N-cyanäthyl- aminobenzol kuppelt. Der neue Monoazofarbstof± färbt Acetat- kunstseide und Polyamidfasern PATENT CLAIM Process for the production of a monoazo dye, characterized in that 1 mol of diazotized 1-amino-4-methylsulfonylnaphthalene is coupled with 1 mol of N-oxethyl-N-cyanoethyl aminobenzene. The new monoazo dye ± dyes acetate rayon and polyamide fibers in kräftig orangen Tönen von sehr guten Echtheitseigen schaften. in strong orange tones with very good fastness properties.
CH302811D 1951-09-07 1952-06-27 Process for the preparation of a monoazo dye. CH302811A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH297843T 1951-09-07
CH302811T 1952-06-27

Publications (1)

Publication Number Publication Date
CH302811A true CH302811A (en) 1954-10-31

Family

ID=25733884

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302811D CH302811A (en) 1951-09-07 1952-06-27 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH302811A (en)

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