CH300453A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH300453A
CH300453A CH300453DA CH300453A CH 300453 A CH300453 A CH 300453A CH 300453D A CH300453D A CH 300453DA CH 300453 A CH300453 A CH 300453A
Authority
CH
Switzerland
Prior art keywords
amino
parts
monoazo dye
preparation
mol
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 CH300453A publication Critical patent/CH300453A/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

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 Mono  azofarbstoffes, das dadurch     gekennzeiehnet     ist, dass man 1     Mbl        diazotiertes        1-Amino-          2tbrom-4-nitrabenzol    mit 1     Mol        1-(N-Oxäthyl-          N-cyanäthyl)-amino-3-m-ethylbenzol        kuppelt.     



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



  Im     nachfolgenden    Beispiel bedeuten die  Teile     Gewichtsteile.     



       Beispiel:     22 Teile     1-Amino-2-,brom-4-nitrobenzol     werden in     30,    Teilen Wasser und 30 Teilen       konzentrierter    Salzsäure     angerührt    und nach       Zugabe    von 100 Teilen Eis mit 7 Teilen     Na-          triumnitrit,diazotiert.    Nachdem von geringen  nicht gelösten     Verunreinigungen    filtriert  wurde, vereinigt man die     Diazolösung    mit  einem Gemisch aus 20,5 Teilen 1-(N-Oxäthyl-         N-cyanäthyl)-amino-3=methylbenzol,    250 Tei  len Wasser,

   10     Teilen        konzentrierter    Salz  säure und 300 Teilen Eis. Nach einiger Zeit  wird der     ausgefallene        Farbstoff        abfiltriert,     säurefrei gewaschen und     getrocknet.     



  Der neue     Monoazofarbstoff    färbt     Acetat-          kunstseide        und        Polyesterfasern    rein blau  stichig rot mit hervorragender     Licht,,        Wasch-,     Gas     Fume-    und     Sublimierechtheit.    Die Fär  bung     auf        Polyamidfasern    ist     weinrot.  



  Process for the preparation of a monoazo dye. The present patent relates to a process for the preparation of a mono azo dye, which is gekennzeiehnet that 1 Mbl of diazotized 1-amino-2-bromo-4-nitrabenzene with 1 mol of 1- (N-oxethyl-N-cyanoethyl) -amino-3 -m-ethylbenzene couples.



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



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



       Example: 22 parts of 1-amino-2-, bromo-4-nitrobenzene are stirred in 30 parts of water and 30 parts of concentrated hydrochloric acid and, after adding 100 parts of ice, diazotized with 7 parts of sodium nitrite. After a small amount of undissolved impurities has been filtered off, the diazo solution is combined with a mixture of 20.5 parts of 1- (N-oxethyl-N-cyanoethyl) -amino-3 = methylbenzene, 250 parts of water,

   10 parts of concentrated hydrochloric acid and 300 parts of ice. After a while, the precipitated dye is filtered off, washed free of acid and dried.



  The new monoazo dye dyes acetate rayon and polyester fibers in a pure blue, pungent red with excellent light, fastness to washing, gas fume and sublimation. The dyeing on polyamide fibers is wine red.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Monoo- azofarbstoffes, dadurch gekennzeichnet, dass man 1 Mol @diazotiertes 1-Amino-2-brom-4- nitrobenzol mit 1 Mol 1-(N-Oxäthyl N-cyan äthyl) PATENT CLAIM: A process for the production of a mono azo dye, characterized in that 1 mol of @diazotized 1-amino-2-bromo-4-nitrobenzene is mixed with 1 mol of 1- (N-oxethyl N-cyano ethyl) -amino-3-methylbenzol kuppelt. Der neue Monoazofarbstoff färbt Acetat kunstseide und Polyesterfasern rein blau stichig rot mit hervorragender Licht-, Wasch-, Gas Futile- und Sublimierechth$it. Die Fär bung auf Polyamidfasern ist weinrot. -amino-3-methylbenzene couples. The new monoazo dye dyes acetate, artificial silk and polyester fibers, pure blue, a pungent red with excellent light, washing, gas, futile and sublimation fastness. The dyeing on polyamide fibers is wine red.
CH300453D 1951-09-04 1951-09-04 Process for the preparation of a monoazo dye. CH300453A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH300453T 1951-09-04
CH297841T 1952-01-18

Publications (1)

Publication Number Publication Date
CH300453A true CH300453A (en) 1954-07-31

Family

ID=25733867

Family Applications (1)

Application Number Title Priority Date Filing Date
CH300453D CH300453A (en) 1951-09-04 1951-09-04 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH300453A (en)

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