CH235208A - Process for the preparation of a copper-containing disazo dye. - Google Patents

Process for the preparation of a copper-containing disazo dye.

Info

Publication number
CH235208A
CH235208A CH235208DA CH235208A CH 235208 A CH235208 A CH 235208A CH 235208D A CH235208D A CH 235208DA CH 235208 A CH235208 A CH 235208A
Authority
CH
Switzerland
Prior art keywords
copper
dye
preparation
amino
disazo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
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 J R Geigy filed Critical Ag J R Geigy
Publication of CH235208A publication Critical patent/CH235208A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound

Landscapes

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

Description

  

  Verfahren zur Herstellung eines kupferhaltigen     Disazofarbstoffes.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur     Darstellung     eines kupferhaltigen     Disa.zofarbstoffes,    wel  ches dadurch     ,gekennzeichnet    ist,     dass    man       diazotierte        6-Benzoylamino-2-amino-l-oxy-          benzol-4-sulfonsäure,        diazotiertes        2-Amino-5-          nitro-l-methoxybenzol,

          Resorein    und ein       kupferabgebendes        Mittel    aufeinander ein  wirken lässt.  



  Der neue Farbstoff stellt ein     schwarzes     Pulver dar, welches in Wasser mit brauner,  in Schwefelsäure mit     roter    Farbe löslich ist  und Seide in braunen Tönen von guten     Echt-          heiten    anfärbt.  



       Beispiel:     Die     Diazoverbind'ung    aus 30,8 Teilen 6       Benzoylamino,-2-amino-l-oxybenzol-4-sulfon-          sä.ure    wird mit einer     laugenalkalischen    Lö  sung von 11 Teilen     Resorcin    vereinigt. Nach  beendeter Kupplung wird der     Monoa.zofarb-          stoff    mit Salzsäure abgeschieden, isoliert und  in essigsaurer Lösung mit dem     Diazokörper     aus 16,8 Teilen     2-Amino-5-nitro-l-methoxy-          benzol    gekuppelt.

   Der mit     'Kochsalz    abge-         schiedene        Disazofarbstoff    wird in 2000 Tei  len Wasser bei 80  gelöst, mit 25 Gewichts  teilen     kristallisiertem    Kupfersulfat versetzt  und 1 Stunde bei 90  gehalten. Man filtriert  den ausgeschiedenen     kupferhaltigen    Farb  stoff und führt ihn nach     bekannten    Methoden  in das     Natriumsalz    über. Er färbt :Seide in  braunen Tönen von sehr     guten        Echtheiten.     



       Anstatt    die     Kupferung    mit dem fertigen  Farbstoff vorzunehmen, kann man auch den       Monoazofarbstoff    in die     Kupferverbindung     überführen und erst diese zum     Disazofarb-          stoff    kuppeln.



  Process for the preparation of a copper-containing disazo dye. The subject of the present additional patent is a process for the preparation of a copper-containing disa.zo dye, wel Ches is characterized in that diazotized 6-benzoylamino-2-amino-1-oxybenzene-4-sulfonic acid, diazotized 2-amino-5 - nitro-l-methoxybenzene,

          Resorein and a copper-releasing agent can interact.



  The new dye is a black powder which is soluble in water with a brown color and in sulfuric acid with a red color and dyes silk in brown shades of good fastness.



       Example: The diazo compound from 30.8 parts of 6-benzoylamino, -2-amino-1-oxybenzene-4-sulfonic acid is combined with an alkaline solution of 11 parts of resorcinol. When the coupling is complete, the monoazo dye is deposited with hydrochloric acid, isolated and coupled to the diazo body made from 16.8 parts of 2-amino-5-nitro-1-methoxybenzene in an acetic acid solution.

   The disazo dye deposited with common salt is dissolved in 2000 parts of water at 80, mixed with 25 parts by weight of crystallized copper sulfate and kept at 90 for 1 hour. The precipitated copper-containing dye is filtered off and converted into the sodium salt by known methods. It dyes: silk in brown shades with very good fastness properties.



       Instead of coppering with the finished dye, the monoazo dye can also be converted into the copper compound and only this can be coupled to the disazo dye.

Claims (1)

PATENTANSPRUCFI: Verfahren zur Darstellung eines kupfer haltigen Disazofarbstoffes, .dadurch gekenn zeichnet, dass man diazotierte 6-Benzoyl- amino,- 2 - amino-11-oxybenzol -4-sulfonsäure, diazotiertes 2-Amino-5-nitro-l-methoxyben- zol, Resorcin und ein kupferabgebendes Mit tel aufeinander einwirken lässt. PATENT CLAIM: Process for the preparation of a copper-containing disazo dye, characterized by the fact that one diazotized 6-benzoylamino, - 2 - amino-11-oxybenzene -4-sulfonic acid, diazotized 2-amino-5-nitro-l-methoxyben- zol, resorcinol and a copper-releasing agent. Der neue Farbstoff stellt ein schwarzes Pulver dar, welches in Wasser mit brauner, in Schwefelsäure mit roter Färbe löslich ist und Seide in braunen Tönen von guten Echt- heiten. anfärbt. UN TL,\iL AN SPRUCH Verfahren nach Patentanspruch. dadurch gekennzeichnet. dass man zuerst einen Mono- azofarbstoff herstellt, diesen. kupfert und die Kupferverbindung anschliessend mit der zwei ten Diazokomponente kuppelt. The new dye is a black powder, which is soluble in water with a brown color, in sulfuric acid with a red color, and silk in brown shades of good fastness. stains. UN TL, \ iL AN SPRUCH Method according to patent claim. characterized. that one first produces a mono azo dye, this one. copper and then couples the copper compound with the second diazo component.
CH235208D 1942-04-28 1942-04-28 Process for the preparation of a copper-containing disazo dye. CH235208A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH231256T 1942-04-28
CH235208T 1942-04-28

Publications (1)

Publication Number Publication Date
CH235208A true CH235208A (en) 1944-11-15

Family

ID=25727573

Family Applications (1)

Application Number Title Priority Date Filing Date
CH235208D CH235208A (en) 1942-04-28 1942-04-28 Process for the preparation of a copper-containing disazo dye.

Country Status (1)

Country Link
CH (1) CH235208A (en)

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