CH200678A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH200678A
CH200678A CH200678DA CH200678A CH 200678 A CH200678 A CH 200678A CH 200678D A CH200678D A CH 200678DA CH 200678 A CH200678 A CH 200678A
Authority
CH
Switzerland
Prior art keywords
preparation
monoazo dye
sulfuric acid
new monoazo
new
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH200678A publication Critical patent/CH200678A/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

Landscapes

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

Description

  

  Verfahren zur Herstellung eines neuen     bionoazo-Farbstoffes.       Vorliegende     Erfindung        bezieht    sich auf       ,die    Herstellung eines neuen     Monoazofarb-          etoffes,    der     Acetatkunstseide    in grünlich  blauen Tönen von     guter    Haltbarkeit färbt.  



  Gemäss der     Erfindung    stellt man den  Farbstoff     duroh        Kuppeln.    von     diazotiertem          2-Ch@lor-4-nitroanilin    mit dem     Natriumsalz     <B>,des</B>     Alkyl-Schwefelsäureesters    des     1-N-ss-          hydroxyäthylamin-5-naphtols    her.  



  <I>Beispiel:</I>  17,25 Teile     2-Chlor-4-nitroanilin        werden     auf     bekannte    Weise     diazotiert.    Der so erhal  tenen     wässerigen    Lösung der     Diazoverbin-          dung        wird        langsam    untergutem     Umrühren.     eine neutrale Lösung von 30,5     Teilen        des          Natriumsalzes    des     Alkyl-jSchwefelsäureesters     des.

       1-N-ss-hydroxyäthylamin-5-naphtols    in  400 Teilen Wasser     zugesetzt.    Die Kupplung       vollzieht        sieh    rasch     und        wenn    vollständig,  werden 10% Salz     (Volumgewicht)        zugesetzt          und        wird    das     Gemisch    durch     einen        Zusatz     von     Natriumkarbonat        alkalisch    gemacht.

   Der  neue     Farbstoff    wird dann     abfiltriert    und ge  trocknet.    Der Farbstoff bildet ein     schwarzes    Pul  ver, dessen Lösung in     heissem        Wasser    blau       und    in     konzentrierter        Schwefelsäure        dunkel-          violett    ist.

   Er färbt     Acetatkuustseide    in       grünlich-blauen    Tönen von guter     Haltbar-          keit,    wenn aus     einem    neutralen,     1%    Salz       enthaltendem    Färbebad     angewandt.  



  Process for the production of a new bionoazo dye. The present invention relates to the production of a new Monoazofarb- etoffes that dyes acetate rayon in greenish blue tones of good durability.



  According to the invention, the dye is placed through domes. of diazotized 2-chloro-4-nitroaniline with the sodium salt of the alkyl sulfuric acid ester of 1-N-β-hydroxyethylamine-5-naphthol.



  <I> Example: </I> 17.25 parts of 2-chloro-4-nitroaniline are diazotized in a known manner. The aqueous solution of the diazo compound obtained in this way is slowly stirred with vigorous stirring. a neutral solution of 30.5 parts of the sodium salt of the alkyl-sulfuric acid ester of.

       1-N-ss-hydroxyethylamine-5-naphtols in 400 parts of water were added. The coupling takes place quickly and when complete, 10% salt (volume weight) is added and the mixture is made alkaline by adding sodium carbonate.

   The new dye is then filtered off and dried. The dye forms a black powder, the solution of which is blue in hot water and dark purple in concentrated sulfuric acid.

   It dyes acetate silk in greenish-blue shades of good durability when applied from a neutral dye bath containing 1% salt.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Monoazofarbstoffes, dadurch gekennzeichnet, ,dass zuerst 2-Chlor-4-nitroauilin diazotiert und dann die Diazoverbindung mit dem Natriumsalz des Alkyl@Schwefelsäureesters .des 1-N-ss-.hydroxyäthylamin-5-naphtols ge kuppelt wird. Claim: Process for the preparation of a new monoazo dye, characterized in that 2-chloro-4-nitroauiline is first diazotized and then the diazo compound is coupled with the sodium salt of the alkyl @ sulfuric acid ester .des 1-N-ss-.hydroxyethylamine-5-naphthol becomes. Das Produkt ist ein schwarzes Pulver, ,das sich in heissem Wasser zu einer blauen Lösung und in konzentrierter Schwefelsäure zu einer dunkelvioletten Lösung löst und Acetatkunstseide in. grünlich-blauen Tönen färbt. The product is a black powder that dissolves in hot water to a blue solution and in concentrated sulfuric acid to a dark purple solution and dyes acetate silk in greenish-blue tones.
CH200678D 1936-11-30 1937-11-08 Process for the preparation of a new monoazo dye. CH200678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB200678X 1936-11-30

Publications (1)

Publication Number Publication Date
CH200678A true CH200678A (en) 1938-10-31

Family

ID=10139829

Family Applications (1)

Application Number Title Priority Date Filing Date
CH200678D CH200678A (en) 1936-11-30 1937-11-08 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH200678A (en)

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