CH300456A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH300456A
CH300456A CH300456DA CH300456A CH 300456 A CH300456 A CH 300456A CH 300456D A CH300456D A CH 300456DA CH 300456 A CH300456 A CH 300456A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
parts
mol
oxypropyl
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 CH300456A publication Critical patent/CH300456A/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 gekennzeichnet  ist, dass man 1     Mol        diazotiertes        1-Amino-          2-brom-4-nitrobenzol    mit 1     Mol        1V        Oxypropyl-          N-cyanäthylaminobenzol    kuppelt.  



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



  1m nachfolgenden Beispiel bedeuten die  Teile Gewichtsteile.    <I>Beispiel:</I>  22     Teile        1-Amino-2-brom-4-nitrobenzol     werden     in    30 Teilen Wasser und 30 Teilen  30     o/oiger    Salzsäure angerührt.

   Hierauf fügt  man 100 Teile     Eis    hinzu und     diazotiert    mit  7 Teilen     Natriumnitrit.    Nach beendigter Um  setzung wird die     Diazomasse    mit einer Lö  sung von 21 Teilen N-Oxypropyl-N-eyanäthyl-         aminobenzol    in 500 Teilen     Wasser,    100     Teilen     Eis und 20 Teilen. 30     o/oiger    Salzsäure ver  einigt. 'Die Kupplung     ist    nach kurzer Zeit  vollzogen; man filtriert den ausgefallenen  Farbstoff ab, wäscht ihn säurefrei und trock  net ihn.  



  Der neue     Monoazofarbstoff    färbt Acetat  kunstseide und Polyesterfasern in leuchtend  roten, sehr echten Tönen. Die Färbung auf       Polyamidfasern    ist etwas     blaustichiger.  



      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 mole of diazotized 1-amino-2-bromo-4-nitrobenzene is coupled with 1 mole of 1V oxypropyl-N-cyanoethylaminobenzene.



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



  In the following example, the parts are parts by weight. <I> Example: </I> 22 parts of 1-amino-2-bromo-4-nitrobenzene are mixed in 30 parts of water and 30 parts of 30% hydrochloric acid.

   100 parts of ice are then added and the mixture is diazotized with 7 parts of sodium nitrite. When the reaction is complete, the diazo composition is treated with a solution of 21 parts of N-oxypropyl-N-eyanäthylaminobenzene in 500 parts of water, 100 parts of ice and 20 parts. 30 o / o hydrochloric acid united. 'The coupling is completed after a short time; the precipitated dye is filtered off, washed acid-free and dried.



  The new monoazo dye dyes acetate rayon and polyester fibers in bright red, very real shades. The coloring on polyamide fibers is a little more bluish.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man 1 Mol diazotiertes 1-Amino-2-brom-4-nitro- henzol mit 1 Mol N-Oxypropyl-N-cyanäthyl- aminobenzol kuppelt. Der neue Monoazofarbstoff färbt Acetat kunstseide und Polyesterfasern in leuchtend roten, sehr echten Tönen. Die Färbung auf Polyamidfasern ist etwas blaustichiger. Claim: Process for the preparation of a monoazo dye, characterized in that 1 mol of diazotized 1-amino-2-bromo-4-nitrohenenzene is coupled with 1 mol of N-oxypropyl-N-cyanoethyl-aminobenzene. The new monoazo dye dyes acetate rayon and polyester fibers in bright red, very real shades. The coloring on polyamide fibers is a little more bluish.
CH300456D 1951-09-04 1951-09-04 Process for the preparation of a monoazo dye. CH300456A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH300456T 1951-09-04
CH297841T 1952-01-18

Publications (1)

Publication Number Publication Date
CH300456A true CH300456A (en) 1954-07-31

Family

ID=25733870

Family Applications (1)

Application Number Title Priority Date Filing Date
CH300456D CH300456A (en) 1951-09-04 1951-09-04 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH300456A (en)

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