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CH257017A - Process for the preparation of a new disazo dye. - Google Patents

Process for the preparation of a new disazo dye.

Info

Publication number
CH257017A
CH257017A CH257017DA CH257017A CH 257017 A CH257017 A CH 257017A CH 257017D A CH257017D A CH 257017DA CH 257017 A CH257017 A CH 257017A
Authority
CH
Switzerland
Prior art keywords
blue
parts
new
disazo dye
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba 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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH257017A publication Critical patent/CH257017A/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
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
    • C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
    • C09B35/16—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from hydroxy-amines

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpaten Nr. 229184.    Verfahren zur Herstellung eines neuen     Disazofarbstoffes.       Es wurde gefunden, dass man einen neuen       Disazofarbstoff    erhält,     wenn    man     tetrazo-          tiertes        3,3'-Dioxy-4;4'-diaminodiphenyl    in Ge  genwart von anorganischen nicht reduzierend  wirkenden     Atzlaugen    mit 2 Hol     2-Athylaini-          no-5-oxynaphthaIin-7-.sulfonsKure    vereinigt.  



  Als anorganische nicht reduzierend wir  kende     Ätzlaugen    sind sowohl     Ätzalkalien     und     Ammoniak    als auch Lösungen bzw.     Auf-          sehlämmungen    von     Hydroxyden    der     Erd.-          alkahmetalle    zu     verstehen.     



  Der neue Farbstoff stellt ein schwarzes.       broncierendes    Pulver dar, das sich in     Wasser     und in 10%iger Natronlauge mit     violetter,     in 10%iger Sololösung mit blauer und in  konzentrierter Schwefelsäure     mit    blaugrüner       Färbe    löst. Er erzeugt auf Baumwolle im  Ein- oder     Zweibadverfahren    mit Kupfersal  zen nachbehandelt echte blaue Töne.  



       Beispiel:     21,6 Teile     3,3'-Dioxy-4,4'-diaminodiphe-          nyl,    in Form des     Chlorhydrates:,        werden    in  100 Teilen Wasser und 12 Teilen konzen  trierter Salzsäure verrührt und bei 5-8  C       finit    einer     wässerigen    Lösung von 18,8 Teilen       Natriumnitrit        tetrazotiert.    Nach beendeter  Reaktion kühlt man auf     3     C ab, neutralisiert  durch Zugabe von 6,4 Teilen Soda und fil  triert die ausgefallene     Tetrazoverbindung    ab.

      Man trägt die ausgeschiedene     Tetrazo-          verbindung    in eine auf 5  C abgekühlte Auf  schlemmung von 56 Teilen     2-Äthylamino-5-          oxynaphthalin-7-sulfonsäure    und 29,6 Teilen       Caleiumhydroxyd    in 200 Teilen Wasser und  11,2     Volumteilen        50%iger        Kalilauge-    ein.  Man kuppelt während 3 Stunden bei 5-8      C     und beendet die Reaktion durch mehrstün  diges     Rühren,    bei 10-20  C.

   Hierauf ver  dünnt man mit 1600 Teilen Wasser von 50  C,  setzt 60 Teile Soda zu und filtriert vom     Cal-          ciumcarbonat    ab. Das Filtrat wird mit 140  Teilen 10 %     iger    Salzsäure versetzt und der  Farbstoff durch     Aussalzen    gewonnen.



      Additional patent to main patent no. 229184. Process for the production of a new disazo dye. It has been found that a new disazo dye is obtained if tetrazo- tated 3,3'-dioxy-4; 4'-diaminodiphenyl in the presence of inorganic non-reducing caustic liquors with 2 hol of 2-ethylainino-5-oxynaphthaIin -7-.sulfonsKure united.



  Inorganic, non-reducing caustic solutions are both caustic alkalis and ammonia as well as solutions or slurry insulations of hydroxides of the alkaline earth metals.



  The new dye represents a black one. bronzing powder that dissolves in water and in 10% sodium hydroxide solution with violet, in 10% solo solution with blue and in concentrated sulfuric acid with blue-green color. It produces real blue tones on cotton in a one or two bath process, post-treated with copper salts.



       Example: 21.6 parts of 3,3'-dioxy-4,4'-diaminodiphenyl, in the form of the chlorohydrate: are stirred into 100 parts of water and 12 parts of concentrated hydrochloric acid and an aqueous solution at 5-8 ° C. is finite tetrazotized by 18.8 parts of sodium nitrite. When the reaction has ended, the mixture is cooled to 3 ° C., neutralized by adding 6.4 parts of soda and the precipitated tetrazo compound is filtered off.

      The precipitated tetrazo compound is added to a suspension, cooled to 5 ° C., of 56 parts of 2-ethylamino-5-oxynaphthalene-7-sulfonic acid and 29.6 parts of potassium hydroxide in 200 parts of water and 11.2 parts by volume of 50% strength potassium hydroxide solution . The coupling is carried out for 3 hours at 5-8 ° C. and the reaction is ended by stirring for several hours at 10-20 ° C.

   It is then diluted with 1600 parts of water at 50 ° C., 60 parts of soda are added and the calcium carbonate is filtered off. 140 parts of 10% hydrochloric acid are added to the filtrate and the dye is obtained by salting out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Disazofarbstoffes, dadurch. gekennzeichnet, dass man tetrazotiertes 3,3'-Dioxy-4,4'-di- axninodiphenyl in Gegenwart von anorgani schen nicht reduzierend wirkenden Ätzlaugen mit 2 Hol 2-Ä.thylamino-5-oxynaphthalin-7- sulfonsäure vereinigt. PATENT CLAIM: Process for the production of a new disazo dye, thereby. characterized in that tetrazotized 3,3'-dioxy-4,4'-di-axninodiphenyl is combined with 2 Hol 2-Ä.thylamino-5-oxynaphthalene-7-sulfonic acid in the presence of inorganic non-reducing caustic solutions. Der neue Farbstoff stellt getrocknet ein schwarzes, broncierendes Pulver dar, das sich in Wasser und in 10%iger Natronlauge mit violetter, in. '10 % iger Sodalösung mit blauer und in konzentrierter Schwefelsäure mit blau grüner Farbe löst. Er erzeugt auf Baumwolle im Ein- oder Zweibadverfahren mit Kupfer salzen. nachbehandelt echte blaue Töne. When dried, the new dye is a black, bronzing powder that dissolves in water and in 10% sodium hydroxide solution with purple, in 10% sodium carbonate solution with blue and in concentrated sulfuric acid with blue-green color. He produces salt on cotton in a one or two bath process with copper. after-treated real blue tones.
CH257017D 1941-02-18 1942-02-02 Process for the preparation of a new disazo dye. CH257017A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH232505T 1941-02-18
CH257017T 1942-02-02
CH609299X 1942-02-03
CH616155X 1942-10-30

Publications (1)

Publication Number Publication Date
CH257017A true CH257017A (en) 1948-09-15

Family

ID=27429731

Family Applications (1)

Application Number Title Priority Date Filing Date
CH257017D CH257017A (en) 1941-02-18 1942-02-02 Process for the preparation of a new disazo dye.

Country Status (1)

Country Link
CH (1) CH257017A (en)

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