CH284416A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH284416A
CH284416A CH284416DA CH284416A CH 284416 A CH284416 A CH 284416A CH 284416D A CH284416D A CH 284416DA CH 284416 A CH284416 A CH 284416A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
amino
disazo dye
red
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 CH284416A publication Critical patent/CH284416A/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
    • C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups

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

Description

  

  Verfahren zur Herstellung eines     Disazofarbstoffes.            (legenstancl    des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Disazo-          farbstoffes,    welches     dadureh    gekennzeichnet  ist, dass man den     chtreh    Kuppeln der     Diazo-          verbindung    aus 1 1     o1        2--zlminobenzol-7.-ear-          bonsäure    mit 1 --Hol     2-(3'---#letliyl-1'-aminoben-          zoyl)

  -aniino-5-oxynaplithalin-7-stllfonsäure        er-          li < iltli(#lien        Aminoazofarbstoff    dianotiert     Lind     die     l)iazo-azoverbiizdung    mit. 1.     llol        2-Benzoyl-          ainino-5-ozy-naplitlialin.-7-stilfonsäure    kuppelt.

         Beispiel:          I        )ei-        Aniinoazofa.rlistoff,    den     nian    durch Kup  peln     von        1\.3,7    'feilen     dianotierter        2-Aminoben-          zol-l-ear1)onsäure    mit 37,2 Teilen 2-(     -h@ethyl-          9.'-a        ni    in     oli        enzov    1)

       -amiiio-5-oxynaplithalin-7-siil-          fonsäure    in     natriumearbonat-alkalischem        lle-          diiuii        ei hiill,    wird in 400 'feilen Wasser     an-          die    Lösung mit 7 Teilen Natrium  nitrit versetzt und auf 8  gekühlt. Bei dieser       Tenipei-atur    gibt man .der Lösung 30 Teile  konzentrierte Salzsäure zu und rührt sie wäh  rend ungefähr 2 Stunden, worauf die     Diazo-          tierun,--        beendi;t    ist.

   Die erhaltene     Diazo-          suspension    lässt man bei 5 bis 10  zu einer       Lösung    von 31,5 Teilen     2-Benzoyl.amino-5-oxy-          naphtlialin-7-sulfons < äure    und     -10    Teilen Na  triumearbonat in 500 Teilen Wasser laufen.

    Die     Kupplung    zum     Disazofarbstoff    erfolgt    sehr rasch; nach 2 Stunden wird die Reak  tionsmasse auf 70  erwärmt, der in Lösung       -egangene    Farbstoff mit 50 Teilen     Natrium-          cblorid        ausgesalzt,    der entstandene Nieder  schlag filtriert     und    bei 90  im Vakuum ge  trocknet.  



  Der neue     Parbstoi'f    ist ein rotes Pulver,  welches sich in Wasser mit roter Farbe löst  und Baumwolle und Fasern aus regenerierter       Celltilose    in roten Tönen färbt, welche durch  Nachbehandeln mit Kupfersalzen wasch- und       liehteclit    werden.



  Process for the preparation of a disazo dye. (The legend of the present patent is a process for the production of a disazo dye, which is characterized by the fact that the reverse coupling of the diazo compound from 1 1 o1 2-zlminobenzene-7-earboxylic acid with 1 -hol 2 - (3 '--- # letliyl-1'-aminoben- zoyl)

  -aniino-5-oxynaplithalin-7-stylfonic acid achieves li <iltli (#lien aminoazo dye dianotates and the l) iazo-azo connection with. 1. llol 2-benzoyl-ainino-5-ozy-naplitlialin.-7-stilfonic acid couples.

         Example: I) ei- Aniinoazofa.rlistoff, the nian by coupling 1 \ .3.7 'files dianotized 2-aminobenzene-1-ear1) onic acid with 37.2 parts 2- (-h @ ethyl- 9 .'- a ni in oli enzov 1)

       -amiiio-5-oxynaplithalin-7-silphonic acid in sodium carbonate-alkaline lle-diiuii egg shell, the solution is mixed with 7 parts of sodium nitrite in 400% water and cooled to 8. At this point, 30 parts of concentrated hydrochloric acid are added to the solution and the mixture is stirred for about 2 hours, whereupon the diazotization is over.

   The diazo suspension obtained is allowed to run at 5 to 10 into a solution of 31.5 parts of 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid and -10 parts of sodium carbonate in 500 parts of water.

    The coupling to the disazo dye takes place very quickly; After 2 hours, the reaction mass is heated to 70, the dyestuff which has gone into solution is salted out with 50 parts of sodium chloride, and the resulting precipitate is filtered and dried at 90 in a vacuum.



  The new Parbstoi'f is a red powder that dissolves in water with a red color and dyes cotton and fibers from regenerated Celltilose in red tones, which can be washed and lenteclit by post-treatment with copper salts.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man den durch Kuppeln der Diazoverbindung aus 1 hol 2-Aminobenzol-l-earbonsänre mit 1 Mol '2-(3'-\Tetlivl-4'- aniinobenzoyl) <B> PATENT CLAIM: </B> Process for the preparation of a disazo dye, characterized in that the compound obtained by coupling the diazo compound from 1 hol 2-aminobenzene-1-carbonate with 1 mol '2- (3' - \ Tetlivl- 4'-aniinobenzoyl) -amino-5-oxy- naphthalin-7-sulfonsäure erhältlichen Amino- azofarbstoff dianotiert und die Diazo-a7over- bindung mit 1Mo1 2-Benzoy 1amino-5-oxynaph- thalin-7-sulfonsäure kuppelt. Der neue Farbstoff ist ein rotes Pulver, welches sieh in Wasser mit, roter Farbe löst und Baumwolle und Fasern aus regenerierter Cellulose in roten Tönen färbt, welche durch Nachbehandeln mit Kupfersalzen wasch- und lichtecht werden. -amino-5-oxynaphthalene-7-sulfonic acid available amino azo dye and the diazo-α7over- connection with 1Mo1 2-Benzoy 1 amino-5-oxynaphthalene-7-sulfonic acid is coupled. The new dye is a red powder, which dissolves in water with a red color and dyes cotton and fibers made of regenerated cellulose in red tones, which are washable and lightfast when treated with copper salts.
CH284416D 1950-06-27 1950-06-27 Process for the preparation of a disazo dye. CH284416A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH284416T 1950-06-27

Publications (1)

Publication Number Publication Date
CH284416A true CH284416A (en) 1952-07-31

Family

ID=4484524

Family Applications (1)

Application Number Title Priority Date Filing Date
CH284416D CH284416A (en) 1950-06-27 1950-06-27 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH284416A (en)

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