CH302034A - Process for the preparation of a chromable disazo dye. - Google Patents

Process for the preparation of a chromable disazo dye.

Info

Publication number
CH302034A
CH302034A CH302034DA CH302034A CH 302034 A CH302034 A CH 302034A CH 302034D A CH302034D A CH 302034DA CH 302034 A CH302034 A CH 302034A
Authority
CH
Switzerland
Prior art keywords
disazo dye
honorable
preparation
mol
parts
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 CH302034A publication Critical patent/CH302034A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes

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

Description

  

  Zusatzpatent zum Hauptpatent<B>297842.</B>         Verfabren    zur Herstellung eines     ehromierbaren        Disazofarbstoffes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     ehromier-          baren        Disazofarbstoffes,    welches darin besteht,

         dass    man<B>1</B>     Mol    der     Diazoverbindung    aus der  durch Kuppeln von     diazotiertem        1-Amino-          benzol-3-sulfonsä-Lireamid    mit     1-Oxy-2-earb-          äthoxyaminobenzol    und anschliessendes Ver  seifen der     Carbäthoxyaminogruppe        erhältli-          ehen        Aminomonoazoverbindung    mit<B>1</B>     Mol        1-          Carbo-        (2'-äthoxy)

          -äthoxyamino-7-oxynaphtha-          ]in    kuppelt.  



  Im nachfolgenden Beispiel bedeuten die  Teile Gewichtsteile.  



  <I>Beispiel:</I>  <B>29,2</B> Teile der durch Kuppeln von     diazotier-          tem        1-Aminobenzol-3-sulionsäureamid    mit     1-          Oxy-2-earbäthoxyaminobenzol    und anschliessen  des Verseifen der     Carbäthoxyaminogruppe        er-          liältliehenAminomonoazoverbindungwerdenin     400 Teilen Wasser und 4 Teilen     Natrium-          hydroxyd    gelöst. Man versetzt die Lösung mit  <B>6,9</B> Teilen     Natriumnitrit    und tropft sie in  eine Mischung von<B>36</B> Teilen konzentrierter  Salzsäure und<B>100</B> Teilen Eiswasser.

   Den so  erhaltenen     Diazokörper    trägt man unter Eis  kühlung in eine Lösung von<B>27,5</B> Teilen     1-          Carbo-        (2'-äthoxy)        -äthoxyamino-7-oxynaplitha-          lin,    14 Teilen     Natriumhydroxyd    in<B>150</B> Teilen  Wasser ein. Sobald die Bildung des Disazo-         farbstoffes    beendigt ist, wird dieser mit     Na-          triumehlorid    aus der Kupplungsmasse, abge  schieden,     abfiltriert    und getrocknet.  



  <B>.</B> Der neue     ehromierbare        Disazofarbstoff    ist  ein dunkles Pulver, das sich in verdünnter       Sodalösung        nüt    blaugrauer, in konzentrierter  Schwefelsäure mit schmutzig violetter Farbe  löst und Wolle     metachrom    in     grünoliven    Tönen  von guter     Lielit-    und vorzüglichen     Nassecht-          heiten    färbt.



  Additional patent to main patent <B> 297842. </B> Procedure for the production of an honorable disazo dye. The subject of the present patent is a process for the production of an honorable disazo dye, which consists in

         that <B> 1 </B> mol of the diazo compound is obtained from the aminomonoazo compound obtained by coupling diazotized 1-aminobenzene-3-sulfonsä-lireamide with 1-oxy-2-earbethoxyaminobenzene and subsequent soaping of the carbethoxyamino group with <B> 1 </B> mol 1- Carbo- (2'-ethoxy)

          -ethoxyamino-7-oxynaphtha-] in couples.



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



  <I> Example: </I> <B> 29.2 </B> parts of the by coupling diazotized 1-aminobenzene-3-sulionic acid amide with 1- oxy-2-ethoxyaminobenzene and then saponifying the carbethoxyamino group The aminomonoazo compound is dissolved in 400 parts of water and 4 parts of sodium hydroxide. The solution is mixed with 6.9 parts of sodium nitrite and added dropwise to a mixture of 36 parts of concentrated hydrochloric acid and 100 parts of ice water.

   The diazo body thus obtained is placed in a solution of 27.5 parts of 1-carbo- (2'-ethoxy) -ethoxyamino-7-oxynaplithalin, 14 parts of sodium hydroxide in <B> while cooling with ice 150 parts of water. As soon as the formation of the disazo dye has ended, it is separated from the coupling compound with sodium chloride, separated off, filtered off and dried.



  <B>. </B> The new honorable disazo dye is a dark powder that dissolves in a dilute soda solution with a blue-gray color, in concentrated sulfuric acid with a dirty violet color and dyes wool metachromically in green-olive tones with good Lielite and excellent wet fastness properties.

Claims (1)

PATENTANSPRUCII: Verfahren zur Herstellung eines ehromier- baren Disazofarbstoffes, dadurch gekennzeich net, dass man<B>1</B> Mol der Diazoverbindung aus der durch Kuppeln von diazotiertem 1- Aminobenzol-3-sulionsäureamid mit 1-Oxy-2- earbäthoxyaminobenzol und anschliessendes Verseifen der Carbäthoxyaminogruppe erhält lichen Aminomonoazoverbindung mit<B>1</B> PATENT CLAIM: A process for the preparation of an honorable disazo dye, characterized in that <B> 1 </B> mol of the diazo compound is obtained from the 1-aminobenzene-3-sulionic acid amide obtained by coupling with 1-oxy-2-ethoxyaminobenzene and subsequent saponification of the carbethoxyamino group obtainable aminomonoazo compound with <B> 1 </B> Mol <B>1 -</B> Carbo <B>-</B> (2'-äthoxy) <B>-</B> äthoxyamino-7-oxynaph- thalin kuppelt. Der neue ehromierbare Disazofarbstoff ist ein dunkles Pulver, das sich in verdünnter Sodalösung mit blaugrauer, in konzentrierter Schwefelsäure mit schmutzig violetter Farbe löst und Wolle metachrom in grünoliven Tönen von guter Licht- und vorzüglichen Nassecht- heiten färbt. Mol <B> 1 - </B> Carbo <B> - </B> (2'-ethoxy) <B> - </B> ethoxyamino-7-oxynaphthalene couples. The new honorable disazo dye is a dark powder that dissolves in a dilute soda solution with a blue-gray color, in concentrated sulfuric acid with a dirty violet color and dyes wool metachromically in green-olive shades of good lightfastness and excellent wet fastness.
CH302034D 1951-09-04 1951-09-04 Process for the preparation of a chromable disazo dye. CH302034A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH302034T 1951-09-04
CH297842T 1953-01-21

Publications (1)

Publication Number Publication Date
CH302034A true CH302034A (en) 1954-09-30

Family

ID=25733873

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302034D CH302034A (en) 1951-09-04 1951-09-04 Process for the preparation of a chromable disazo dye.

Country Status (1)

Country Link
CH (1) CH302034A (en)

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