CH217955A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH217955A
CH217955A CH217955DA CH217955A CH 217955 A CH217955 A CH 217955A CH 217955D A CH217955D A CH 217955DA CH 217955 A CH217955 A CH 217955A
Authority
CH
Switzerland
Prior art keywords
dye
acid
preparation
blue
parts
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 CH217955A publication Critical patent/CH217955A/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
    • C09B31/04—Disazo dyes from a coupling component "C" containing a directive amino group
    • C09B31/053—Amino naphthalenes
    • C09B31/057—Amino naphthalenes containing acid groups, e.g. —CO2H, —SO3H, —PO3H2, —OSO3H, —OPO2H2; Salts thereof

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 214613.         Perfabren    zur Herstellung eines     Disazofarbstoffes.            Gegenstand    des     vorliegenden        Zusatzpaten-          tes        ietein    Verfahren zur     Herstellung    eines Dis  azofarbstoffes, :dadurch     gekennzeichnet,        dass          diazotiertes        \2-M:ethyl-5-amin@o,diphenyl;sulfon     mit     0levesäuregemis:

  ch    vereinigt, der entstan  dene     Monoazofarbatoff    weiter     diazotiert    und  die     Diazoazoverbindung    mit     1-Phenylamino          naphtha;lin-8-sulfonsäure    .gekuppelt wird. Der  neue Farbstoff     stellt    eindunkles     Pulver    dar.

    Er löst sich in Wasser     und    in     Schwefelsäure     mit     'blauer    Farbe     und.    färbt Wolle aus  schwach     ,saurem    Bade in     blauschwarzen     Tönen von hervorragender     Wälk-,        Seewasser-          und    Lichtechtheit.  



  <I>Beispiel:</I>  24,7     Teile        2@-Methyl-5,aminodiphenyls:ul-          fon    werden nach den Angaben der französi  schen     Patentschrift    Nr. 616754     diazotiert     und in essigsaurer     Lösung    wie üblich mit  22,3 Teilen     Clevesäuregemi@s.ch    gekuppelt.

    Der fertige     Monoazofarbstoff    wird mit Soda  schwach alkalisch bestellt, mit 7,2 Teilen       Natriumnitrit    versetzt und durch Eingiessen  von 85 Teilen Salzsäure<B>30%</B> bei     8r10            diazotiert.    Nachdem die     Diazotierung    been  det ist, wird     abfiltriert,    in 400 Teilen    Wasser     aufgeschlämmt    und mit 29,5 Teilen       1-phenylaminon@aphthalin-8-@sulfons-aurem    Na  trium in Gegenwart von 45     Teilen    essigsau  rem     Natrium        essigsauer    gekuppelt.

   Der     ge-          trocknete    Farbstoff stellt     ein.dunkles        Pulver     dar. Er löst     sich    in     Wasfser    und     Schwefel-          säure    mit blauer Farbe und färbt Wolle aus       ,schwach        :saurem    Bade     in        blausehwarzen     Tönen von hervorragender     Walk-,        Seewasser-          und        Lichtechtheit.  



  <B> Additional patent </B> to the main patent No. 214613. Perfabren for the production of a disazo dye. The subject of the present additional patent is a process for the production of a disazo dye: characterized in that diazotized \ 2-M: ethyl-5-amin @, diphenyl; sulfone with olevic acid mixtures:

  The resulting monoazo carbate is further diazotized and the diazoazo compound is coupled with 1-phenylamino naphtha; lin-8-sulfonic acid. The new dye is a dark powder.

    It dissolves in water and in sulfuric acid with a blue color and. dyes wool from weakly acidic baths in blue-black shades of excellent resistance to rolling, seawater and light.



  <I> Example: </I> 24.7 parts of 2 @ -Methyl-5, aminodiphenyls: ul- fon are diazotized according to the information in French patent specification No. 616754 and in acetic acid solution as usual with 22.3 parts of Clevesäuregemi @ s.ch coupled.

    The finished monoazo dye is made slightly alkaline with soda, mixed with 7.2 parts of sodium nitrite and diazotized by pouring in 85 parts of hydrochloric acid <B> 30% </B> at 8-10. After the diazotization has ended, it is filtered off, suspended in 400 parts of water and coupled with 29.5 parts of 1-phenylaminon @ aphthalin-8 @ sulfonic acid sodium in the presence of 45 parts of acetic acid rem sodium.

   The dried dye is a dark powder. It dissolves in water and sulfuric acid with a blue color and dyes wool, weak: acidic bath in blue-black tones of excellent fullness, seawater and lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Dissa.zo- farbstoffes:, dadurch gekennzeichnet, dass diazotiertes 2-Methyl-5=aminodiphenylsullon mit Clevesäuregemisch vereinigt, der ent standene Monoaz:ofarbstoff weiter Jiazotiert und die Diazoazowerbindung mit 1-Phenyl- aminonaphthalin - 8 - sulfonsäure gekuppelt wird. PATENT CLAIM: Process for the production of a Dissa.zo- dye: characterized in that diazotized 2-methyl-5 = aminodiphenylsullone combined with a mixture of Cleves acid, the resulting monoaz: o-dye is further jiazotized and the diazoazo bond with 1-phenylaminonaphthalene-8-sulfonic acid is coupled. Der neue Farbstoff stellt ein :dunkles Pulver dar. Er löst sieh in Wasser und in Schwefelsäure mit blauer Farbe und färbt Wolle aus schwach saurem Bade in blau schwarzen Tönen von hervorragender Walk-, Seewasser- und Lichtechtheit. The new dye is a: dark powder. It dissolves in water and in sulfuric acid with a blue color and dyes wool from weakly acidic baths in blue-black shades of excellent fullness, seawater and lightfastness.
CH217955D 1939-12-11 1939-12-11 Process for the preparation of a disazo dye. CH217955A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH214613T 1939-12-11
CH217955T 1939-12-11

Publications (1)

Publication Number Publication Date
CH217955A true CH217955A (en) 1941-11-15

Family

ID=25725620

Family Applications (1)

Application Number Title Priority Date Filing Date
CH217955D CH217955A (en) 1939-12-11 1939-12-11 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH217955A (en)

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