CH302042A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH302042A
CH302042A CH302042DA CH302042A CH 302042 A CH302042 A CH 302042A CH 302042D A CH302042D A CH 302042DA CH 302042 A CH302042 A CH 302042A
Authority
CH
Switzerland
Prior art keywords
preparation
amino
parts
monoazo dye
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 CH302042A publication Critical patent/CH302042A/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        Monoazofarhstofes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Monoazo-          farbstoffes,    das dadurch gekennzeichnet ist,  dass man 1     Mol        diazotiertes        1-Amino-2,5-di-          clilor-4-nitrobenzol    mit 1     1M1        1-(N-Cyanäthyl-          N-oxäthyl)-amino-3-chlorbenzol    kuppelt.  



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



  Im nachfolgenden Beispiel bedeuten die  Teile Gewichtsteile.    <I>Beispiel:</I>    21 Teile     1-Amino-2,5-diehlor-4-nitrobenzol          Eierden    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-          oxäthvl)    -     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 leuchtend scharlachrot und Nylon  rot. Die Färbungen zeichnen sich durch eine  aussergewöhnliche Gas     fume-Echtheit        aus.  



  Process for the production of a monoazo solid. The present patent relates to a process for the preparation of a monoazo dye which is characterized in that 1 mol of diazotized 1-amino-2,5-dichloro-4-nitrobenzene is mixed with 1 1M1 1- (N-cyanoethyl-N -oxäthyl) -amino-3-chlorobenzene couples.



  The monoazo dye thus obtained. 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-2,5-diehlor-4-nitrobenzene egg den at 60-70 in 130 parts of concentrated sulfuric acid. 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-oxäthvl) -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 dyes acetate rayon bright scarlet red and nylon red. The dyeings are characterized by an exceptional gas fume fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Monoazo- fa.rbstoffes, dadurch gekennzeichnet, dass man 1 Mol diazotiertes 1-Amino-2,5-dichlor-4-nitro- benzol mit 1 Mol 1-(N-Cyanäthyl-N-oxäthyl)- amino-3-ehlorbenzol kuppelt. Der neue Monoazofarbstoff färbt Acetat kunstseide leuchtend scharlachrot und Nylon rot. Die Färbungen zeichnen sich durch eine aussergewöhnliche Gas fume-Echtheit aus. PATENT CLAIM: A process for the preparation of a monoazo fa.rstoffes, characterized in that 1 mol of diazotized 1-amino-2,5-dichloro-4-nitrobenzene with 1 mol of 1- (N-cyanoethyl-N-oxethyl) - amino-3-chlorobenzene couples. The new monoazo dye dyes acetate rayon bright scarlet red and nylon red. The dyeings are characterized by an exceptional gas fume fastness.
CH302042D 1951-09-07 1951-09-07 Process for the preparation of a monoazo dye. CH302042A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH297844T 1951-09-07
CH302042T 1951-09-07

Publications (1)

Publication Number Publication Date
CH302042A true CH302042A (en) 1954-09-30

Family

ID=25733889

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302042D CH302042A (en) 1951-09-07 1951-09-07 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH302042A (en)

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