CH302041A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH302041A
CH302041A CH302041DA CH302041A CH 302041 A CH302041 A CH 302041A CH 302041D A CH302041D A CH 302041DA CH 302041 A CH302041 A CH 302041A
Authority
CH
Switzerland
Prior art keywords
preparation
monoazo dye
amino
parts
dye
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 CH302041A publication Critical patent/CH302041A/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
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Landscapes

  • 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     AIol        diazotiertes        1-Amino-2,6-di-          ehlor-4-nitrobenzol    mit 1     Mol        1-(N-Cyanäthyl-          N-oxäthyl)-amino-3-chlorbenzol    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.  



  <I>Beispiel:</I>  21. Teile     1-Amino-2,6-dichlor-4-nitrobenzol     werden bei 60-70  in 130 Teile konzentrierte  Schwefelsäure eingetragen. Man versetzt die  entstandene Lösung unter     gutem    Rühren mit  7 Teilen     Natriumnitrit    und lässt die     Diazotie-          rungsmasse    nach einiger Zeit auf Zimmertem  peratur erkalten.  



  Nun werden 23 Teile     1-(N-Cyanäthyl-N-          oxäthyl)-amino-3-chlorbenzol    in 200 Teilen  Wasser, 10 Teilen konzentrierter     Salzsäure       und 700 Teilen Eis     angerührt.    Man     trägt    die       Diazotierungsmasse    in die Lösung der     Azo-          komponente    derart ein, dass die Temperatur  der Kupplungslösung nicht über 5      steigt.     Nach beendigter Kupplung     wird    der gebildete  Farbstoff     abfiltriert,    säurefrei gewaschen und  im Vakuum getrocknet.  



  Der neue     Monoazofarbstoff    färbt Acetat  kunstseide gelbbraun mit     hervorragender     Licht-, Wasch-, Sublimier- und Gas     fume-Echt-          heit.    Der Farbton der Färbungen auf Nylon  ist rotbraun.



  Process for the preparation of a monoazo dye. The present patent relates to a process for the preparation of a monoazo dye which is characterized in that 1 Alol of diazotized 1-amino-2,6-dichloro-4-nitrobenzene is mixed with 1 mol of 1- (N-cyanoethyl-N -oxäthyl) -amino-3-chlorobenzene couples.



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



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



  <I> Example: </I> 21. parts of 1-amino-2,6-dichloro-4-nitrobenzene are introduced into 130 parts of concentrated sulfuric acid at 60-70. The resulting solution is mixed with 7 parts of sodium nitrite with thorough stirring and the diazotization mass is allowed to cool to room temperature after a while.



  23 parts of 1- (N-cyanoethyl-N-oxäthyl) -amino-3-chlorobenzene are now stirred in 200 parts of water, 10 parts of concentrated hydrochloric acid and 700 parts of ice. The diazotization compound is introduced into the solution of the azo component in such a way that the temperature of the coupling solution does not rise above 5. After the coupling has ended, the dye formed is filtered off, washed free of acid and dried in vacuo.



  The new monoazo dye gives acetate rayon a yellow-brown color with excellent light, wash, sublimation and gas fume fastness. The color tone of the dyeings on nylon is red-brown.

Claims (1)

PATEN TANSPRUCII Verfahren zur Herstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man 1 Mol diazotiertes 1-Amino-2,6-dichlor-4-nitro- benzol mit 1 Mol 1-(N-Cyanäthyl-N-oxäthyl)- amino-3-chlorbenzol kuppelt. Der neue Farbstoff färbt Acetatktmstseide gelbbraun mit hervorragender Licht-, Wasch-, Sublimier- und Gas fume-Echtheit. Der Farb ton der Färbung auf Nylon ist rotbraun. PATEN TANSPRUCII Process for the preparation of a monoazo dye, characterized in that 1 mol of diazotized 1-amino-2,6-dichloro-4-nitrobenzene with 1 mol of 1- (N-cyanoethyl-N-oxethyl) - amino- 3-chlorobenzene couples. The new dye dyes Acetatktmstseide yellow-brown with excellent light, wash, sublimation and gas fume fastness. The color of the dye on nylon is red-brown.
CH302041D 1951-09-07 1951-09-07 Process for the preparation of a monoazo dye. CH302041A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH297844T 1951-09-07
CH302041T 1951-09-07

Publications (1)

Publication Number Publication Date
CH302041A true CH302041A (en) 1954-09-30

Family

ID=25733888

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302041D CH302041A (en) 1951-09-07 1951-09-07 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH302041A (en)

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