CH220422A - Process for the preparation of a tetrakisazo dye. - Google Patents

Process for the preparation of a tetrakisazo dye.

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Publication number
CH220422A
CH220422A CH220422DA CH220422A CH 220422 A CH220422 A CH 220422A CH 220422D A CH220422D A CH 220422DA CH 220422 A CH220422 A CH 220422A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
tetrakisazo dye
good fastness
tetrakisazo
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 CH220422A publication Critical patent/CH220422A/en

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Description

  

  Verfahren zur Herstellung eines     Tetrakisazofarbstoffes.            Gegenstand,des        vorliegenden        Zusatzpaten-          tes        ist    ein Verfahren zur     Herstellu@n,g    eines       Tetrakisazofarbstoffes,    dadurch gekennzeich  net, dass man die     Tetrazoverbindung    aus  4.     4'-D.iaminodiphenyl-harnstoff-3.        3'-@disul-          fonsäure    mit     4-Acetoacetylamino-2-methoxy-          4'-methyl-1    .

       1'-azobenzol-3'-sulfonsäure    kup  pelt. Der erhaltene Farbstoff färbt Baum  wolle in     rotstichig    gelben Tönen von sehr  guter Wasser- und     VGraschechtheit    und guter  Lichtechtheit.  



  <I>Beispiel:</I>  402     Gewichtsteile    4.     4'-Diaminodiphenyl-          harnstoff-,3.        3'-disulfonsäure    werden wie üb  lich     tetrazotiert    und in eine     wässrige    Lösung  von 854 Gewichtsteilen des     Natriumsalzes     der     4-Acetoacetyla-mino-2-methoxy-4'-methyl-          1.1'-azobenzol-3'-sulfonsäure    und 212 Ge  wichtsteilen     Natriumcarbonat        eingetragen.       Der     erhaltene    Farbstoff     -wird        ausigesalzen,

       abgesaugt und .getrocknet. Er färbt Baum  wolle in     rotstichig    gelben Tönen von sehr       guter    Wasser- und     Waschechtheit    und     guter     Lichtechtheit.



  Process for the preparation of a tetrakisazo dye. The subject matter of the present additional patent is a process for the preparation of a tetrakisazo dye, characterized in that the tetrazo compound is obtained from 4. 4'-D.iaminodiphenyl urea-3. 3 '- @ disulfonic acid with 4-acetoacetylamino-2-methoxy-4'-methyl-1.

       1'-azobenzene-3'-sulfonic acid kup pelt. The dye obtained dyes cotton in reddish yellow shades of very good water and VGra fastness and good light fastness.



  <I> Example: </I> 402 parts by weight 4. 4'-diaminodiphenyl urea, 3. 3'-disulfonic acid are tetrazotized as usual and introduced into an aqueous solution of 854 parts by weight of the sodium salt of 4-acetoacetyla-mino-2-methoxy-4'-methyl-1.1'-azobenzene-3'-sulfonic acid and 212 parts by weight of sodium carbonate . The dye obtained is salted out,

       vacuumed and dried. It dyes cotton in reddish yellow shades of very good water and wash fastness and good light fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung, eines Tetra- kisazofarbstoffes, dadurch gekennzeichnet, dass man die Tetrazoverbindung aus. 4. 4'-Di- aminodiphenylharnstoff - 3. 3' - ,disulfonsäure mit 4-Acetoacetylamino-2-methoxy-4'-methyl- 1.1'-azobenzol-3'-sulfonsäure kuppelt. Der erhaltene Farbstoff färbt Baumwolle in rot stichig gelben Tönen von sehr guter Wasser- und Waschechtheit und ;guter Lichtechtheit. PATENT CLAIM: Process for the production of a tetra- kisazo dye, characterized in that the tetrazo compound is made from. 4. 4'-Di-aminodiphenylurea - 3. 3 '-, disulfonic acid couples with 4-acetoacetylamino-2-methoxy-4'-methyl-1.1'-azobenzene-3'-sulfonic acid. The dye obtained dyes cotton in red, pale yellow shades of very good fastness to water and washing and good fastness to light.
CH220422D 1939-12-09 1940-10-07 Process for the preparation of a tetrakisazo dye. CH220422A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE220422X 1939-12-09
CH217243T 1940-10-07

Publications (1)

Publication Number Publication Date
CH220422A true CH220422A (en) 1942-03-31

Family

ID=25725998

Family Applications (1)

Application Number Title Priority Date Filing Date
CH220422D CH220422A (en) 1939-12-09 1940-10-07 Process for the preparation of a tetrakisazo dye.

Country Status (1)

Country Link
CH (1) CH220422A (en)

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