CH212995A - Process for the preparation of a hexakisazo dye. - Google Patents

Process for the preparation of a hexakisazo dye.

Info

Publication number
CH212995A
CH212995A CH212995DA CH212995A CH 212995 A CH212995 A CH 212995A CH 212995D A CH212995D A CH 212995DA CH 212995 A CH212995 A CH 212995A
Authority
CH
Switzerland
Prior art keywords
dye
acid
preparation
mol
brown
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH212995A publication Critical patent/CH212995A/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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/64—Higher polyazo dyes, e.g. of the types

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

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr. 210342.    Verfahren zur Darstellung eines     Hegakisazofarbstoffes.       Gegenstand ,des vorliegenden     Patentes    ist  ein Verfahren zur     Darstellung        eines        Hegakis-          azofarbstoffes,    dadurch     gekennzeichnet,

          .dass     man 2     Mol    des     Monoazofarbstoffes    aus     diazo-          tierter        4'-Nitro-4-amimodiphenylamin-2'-sul-          fonsäure    und dem     technischen        Gemisch    der       1-Naphthylamin-6-    und     -7-sulfonaäure        diazo-          tiert    und die     Diazoverbindung    mit     einem        Mol     des     Disazofarbstoffes    aus 1     

  Mol        tetrazo-          tierter        1-(3'-Amino@benzoylamino)-4-amino-          benzol-,3-sulfonsäure    und 2     Mol        Resorcin    in       alkalischer    Lösung kuppelt.  



  Der neue Farbstoff ist ein dunkles Pul  ver; er löst sich in     Wasser    braun, in     kon-          zentrierter    Schwefelsäure olive und färbt  Leder in braunen Tönen.    <I>Beispiel:</I>    54;3 Teile     des        Mono-azofarbs@toffes    aus       diazotierter        4'-Nitro-4-aminodiphenylamin-2'-          sulfonsäuTe    und dem technischen     Gemisch     der     1-Naphthylamin-6-    und     -7-sulfo#nsäure     werden in Wasser mit 4 Teilen Natronlauge       100%ig    gelöst,

   mit 7 Teilen     Nitrit    versetzt         und    diese     Lösung    bei 0   in 35 Teile Salz  säure     3,0%ig    fliessen gelassen.     Die        Diazotie-          rung        äst    in wenigen Stunden beendet.  



  Diese     Diazoverbindung    gibt man zu einer       wäss,rigen    Lösung von 25,3 Teilen des nach       bekannten        Methodendargestellten        Disazo-          farbstoffes    aus 1     Mol        tetrazotierter    1-(3'       Aminobenzoylamino)-4-aminobenzol-3-sulfon-          ,Aure    und 2     Mol        Resorcin,    und 40 Teilen       Soda    bei 0  .

   Nach     beendeter    Kupplung er  wärmt man auf 50       und    isoliert den Farb  stoff     mittels        Kochsalz    und     !Salzsäure.    Der       filtrierte    und     getrocknete    Farbstoff, ein  dunkles Pulver, löst sich in     Wasser    braun,       in        konzentrierter        Schwefelsäue    olive     und     färbt     Leder    in braunen Tönen.



  <B> Additional patent </B> to main patent no. 210342. Process for the preparation of a hegakis azo dye. The subject matter of the present patent is a process for the preparation of a hegakis azo dye, characterized in that

          .that 2 moles of the monoazo dye from diazo-tated 4'-nitro-4-amimodiphenylamine-2'-sulphonic acid and the technical mixture of 1-naphthylamine-6- and -7-sulphonic acid are diazo- and the diazo compound with a Mol of the disazo dye from 1

  Moles of tetrazotized 1- (3'-Amino @ benzoylamino) -4-aminobenzene-, 3-sulfonic acid and 2 moles of resorcinol in alkaline solution.



  The new dye is a dark powder; it dissolves brown in water, olive in concentrated sulfuric acid and dyes leather in brown tones. <I> Example: </I> 54; 3 parts of the mono-azo color from diazotized 4'-nitro-4-aminodiphenylamine-2'-sulfonic acid and the technical mixture of 1-naphthylamine-6- and -7-sulfo # n acids are dissolved in water with 4 parts of 100% sodium hydroxide solution,

   7 parts of nitrite were added and this solution was allowed to flow at 0 in 35 parts of 3.0% strength hydrochloric acid. The diazotization ends in a few hours.



  This diazo compound is added to an aqueous solution of 25.3 parts of the disazo dye prepared by known methods from 1 mol of tetrazotized 1- (3 'aminobenzoylamino) -4-aminobenzene-3-sulfonic acid and 2 mol of resorcinol and 40 parts soda at 0.

   After the coupling is complete, it is warmed to 50 and the dye is isolated using sodium chloride and hydrochloric acid. The filtered and dried dye, a dark powder, dissolves brown in water, olive in concentrated sulfuric acid and dyes leather in brown tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Ilegakis- azofarbstoffes, dadurch -gekennzeichnet, dass man 2 Mol des Monoazofarbstoffes. aus diazo- tierter 4'-Nitro-4-aminodiphenylamin-2'-sul- fomsäure und dem technischen Gemisch der 1-Naphthylamin-6- und -7 sulfonsäure diazo- eiert und die Diazoverbindung mit Claim: Process for the preparation of an igakis azo dye, characterized in that 2 mol of the monoazo dye are used. from diazotized 4'-nitro-4-aminodiphenylamine-2'-sulphomic acid and the technical mixture of 1-naphthylamine-6- and -7 sulphonic acid diazo- eated and the diazo compound with einem Mol des Disazofarbstoffes aus 1 Mol tetrazotierter 1-(3'-Aminobenzoylainino) -.1- aminobenzol- 3- sulfon8äure und ? Mol Resorein in alka,liselier Lösung kuppelt. one mole of the disazo dye from 1 mole of tetrazotized 1- (3'-aminobenzoylainino) -.1- aminobenzene- 3-sulfonic acid and? Mol resorein in alka, liselier solution couples. Der neue I'arbstoff ist ein dunkles Pul ver; er löst sieh in Wasser braun, in kon zentrierter Seliwefelsäure olive und färbt Leder in braunen Tönen. The new dye is a dark powder; it dissolves brown in water, olive in concentrated seliulfuric acid and dyes leather in brown tones.
CH212995D 1938-10-05 1938-10-05 Process for the preparation of a hexakisazo dye. CH212995A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH212995T 1938-10-05
CH210342T 1938-10-05

Publications (1)

Publication Number Publication Date
CH212995A true CH212995A (en) 1940-12-31

Family

ID=25724842

Family Applications (1)

Application Number Title Priority Date Filing Date
CH212995D CH212995A (en) 1938-10-05 1938-10-05 Process for the preparation of a hexakisazo dye.

Country Status (1)

Country Link
CH (1) CH212995A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2505188A1 (en) * 1974-02-11 1975-08-14 Acna 4,4'-DIAMINOBENZANILIDE-DERIVED HYDRO-SOLUBLE AZO DYES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2505188A1 (en) * 1974-02-11 1975-08-14 Acna 4,4'-DIAMINOBENZANILIDE-DERIVED HYDRO-SOLUBLE AZO DYES

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