CH218817A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH218817A
CH218817A CH218817DA CH218817A CH 218817 A CH218817 A CH 218817A CH 218817D A CH218817D A CH 218817DA CH 218817 A CH218817 A CH 218817A
Authority
CH
Switzerland
Prior art keywords
amino
dye
preparation
combined
disazo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH218817A publication Critical patent/CH218817A/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
    • 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

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 214906.    Verfahren zur Herstellung eines     Disazofarbstoffes.       Gegenstand des vorliegenden Zusatzpaten  tes ist ein     Verfahren    zur Herstellung eines       Disazofarbstoffes,    welches dadurch gekenn  zeichnet ist, dass man die     Diazoverbindung     von     1-Amino-4-(cv-sulfoacetylamino)-6-chlor-          Benzol    mit     1-Amino-3-methylbenzol    vereinigt,

    den erhaltenen     Monoazofarbstoff        weiterdiazo-          tiert    und mit dem gemischten Harnstoff aus       2-Amino-5-oxynaphthalin-7-sulfonsäure    und       o        1-Amino-4-acetylaminobenzol    vereinigt.  



  <I>Beispiel:</I>       26,4"o    Gewichtsteile     1-Amino-4-(w-sulfo-          acetylamino)    - 6 -Chlorbenzol werden in 150  Raumteilen Wasser und 50 Raumteilen 10     o/oiger          Natriumcarbonatlösung    gelöst und mit 6,9  Gewichtsteilen     Natriumnitrit    versetzt. Hierauf  wird das Gemisch bei 0-5 o C unter Rühren  langsam in überschüssige verdünnte     Salzsäure     eingetragen. Die erhaltene     Diazoverbindung,          o    die zum Teil ausgefallen ist, wird nun in  schwach saurem Medium mit der berechneten    Menge     1-Amino-3-methylbenzol    vereinigt.

    Nach beendeter     Kupplung    wird der     Monoazo-          farbstoff    abgeschieden, aus verdünnter Soda  lösung     umgelöst    und in Gegenwart von ver  dünnter     Salzsäure    auf übliche Weise in die       Diazoverbindung    übergeführt.

   Diese     wird    nun       in    neutralem bis     bicarbonatalkalischem    Me  dium bei 0 o C unter Rühren mit einer     wäss-          rigen    Lösung des     Na-Salzes    des gemischten       Harnstoffes    aus     2-Amino-5-oxynaphthalin-7-          sulfonsäure    und     1-Amino-4-acetylaminobenzol     vereinigt. Nach beendeter Kupplung wird der       Farbstoff    abgetrennt     und    getrocknet.  



  Er bildet ein dunkelbraunes,     bronzig    glän  zendes Pulver, das     Baumwolle    in     bordoroten,     sehr     nassechten    Tönen färbt.



      Additional patent to main patent no. 214906. Process for the production of a disazo dye. The subject of the present additional patent is a process for the production of a disazo dye, which is characterized in that the diazo compound of 1-amino-4- (cv-sulfoacetylamino) -6-chlorobenzene is combined with 1-amino-3-methylbenzene ,

    the resulting monoazo dye is further diazo- tated and combined with the mixed urea of 2-amino-5-oxynaphthalene-7-sulfonic acid and o 1-amino-4-acetylaminobenzene.



  <I> Example: </I> 26.4 "o parts by weight of 1-amino-4- (w-sulfo-acetylamino) - 6 -chlorobenzene are dissolved in 150 parts by volume of water and 50 parts by volume of 10% sodium carbonate solution and mixed with 6, 9 parts by weight of sodium nitrite are added, and the mixture is slowly introduced into excess dilute hydrochloric acid with stirring at 0 ° -5 ° C. The diazo compound obtained, which has partially precipitated, is now mixed with the calculated amount of 1-amino-3 -methylbenzene combined.

    After the coupling has ended, the monoazo dye is deposited, redissolved from dilute sodium carbonate solution and converted into the diazo compound in the usual manner in the presence of dilute hydrochloric acid.

   This is then combined in neutral to bicarbonate-alkaline medium at 0 ° C. with stirring with an aqueous solution of the Na salt of the mixed urea of 2-amino-5-oxynaphthalene-7-sulfonic acid and 1-amino-4-acetylaminobenzene. After the coupling has ended, the dye is separated off and dried.



  It forms a dark brown, bronzy, glossy powder that dyes cotton in bordeaux red, very wetfast shades.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino-4-(m-sulfo- acetylamino) - 6 -Chlorbenzol mit 1-Amino-3- methylbenzol vereinigt, PATENT CLAIM: Process for the preparation of a disazo dye, characterized in that the diazo compound of 1-amino-4- (m-sulfo-acetylamino) -6-chlorobenzene is combined with 1-amino-3-methylbenzene, den erhaltenen '4lorio- azofarbstoff weiterdiazotiert und mit dein ge mischten Harnstoff aus 2-Amino-5-oxyriapli- thalin- l -sulfonsäure und 1-Amino-4-acetyl- aminoberizol vereinigt. Der erhaltene Farbstoff bildet ein dunkel braunes, bronzig glänzendes Pulver, das Baum wolle in bordoroten, sehr nassechten Tönen färbt. the obtained '4lorio-azo dye is further diazotized and combined with your mixed urea of 2-amino-5-oxyriapli- thalin- l -sulfonic acid and 1-amino-4-acetylaminoberizole. The dye obtained forms a dark brown, shimmering bronze powder, which dyes the cotton in bordeaux red, very wetfast shades.
CH218817D 1938-10-24 1939-10-15 Process for the preparation of a disazo dye. CH218817A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE218817X 1938-10-24
CH214906T 1939-10-15

Publications (1)

Publication Number Publication Date
CH218817A true CH218817A (en) 1941-12-31

Family

ID=25725656

Family Applications (1)

Application Number Title Priority Date Filing Date
CH218817D CH218817A (en) 1938-10-24 1939-10-15 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH218817A (en)

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