CH222993A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH222993A
CH222993A CH222993DA CH222993A CH 222993 A CH222993 A CH 222993A CH 222993D A CH222993D A CH 222993DA CH 222993 A CH222993 A CH 222993A
Authority
CH
Switzerland
Prior art keywords
mol
compound
oxybenzene
azo dye
carboxylic acid
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 CH222993A publication Critical patent/CH222993A/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
    • C09B35/38—Trisazo dyes ot the type
    • C09B35/40—Trisazo dyes ot the type the component K being a dihydroxy or polyhydroxy compound

Landscapes

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

Description

       

  Zusatzpatent zum Hauptpatent Nr. 219654.    Verfahren zur Herstellung eines     Azofarbstoffes.       Gegenstand dieses Patentes ist ein Verfahr       ienzur    Herstellung eines neuen     Azofarbstofes,     welches darin besteht, dass man 1     Mol    1 . 3  Dioxybenzol einerseits mit 1     Mol    der     Diazo-          verbindung    aus     1-Amino-2-oxybenzol-3-car-          bonsäure-5-sulfonsäure    und anderseits mit  1     Mol    der     Diazoazoverbindung,    die bei der ein  seitigen Kupplung der     Tetrazoverbindung     aus 4.

       4'-Diamino-3    .     3'-dichlordipheny    1 mit       1-Oxybenzol-2-carbonsäure    entsteht, kuppelt.         Beispiel:     25,3 Gewichtsteile     4.4'-Diamino-3.3'-          dichlordiphenyl    werden in 500 Raumteilen  Wasser und 50 Raumteilen 10 n Salzsäure       angeschlämmt    und bei 10   C     tetrazotiert.    Die  klare     Tetrazolösung    fliesst bei 0 bis 5   C zu  einer Lösung von 15 Gewichtsteilen     1-Oxy-          benzol-2-carbonsäure    in 300 Raumteilen 2 n       Natriumcarbonatlösung.    Sobald keine  <RTI  

   ID="0001.0025">   Tetrazo-          verbindung    mehr nachweisbar ist, wird die  abgeschiedene     Diazoazoverbindung    mit einer         sodaalkalischen    Lösung von 35,4 Gewichts  teilen des durch Kuppeln von     diazotierter        1-          Amino    - 2 -     oxybenzol    -     3-carbonsäure-5-sulfon-          säure    mit 1 .     3-Dioxybenzol    erhaltenen Mono  azofarbstoffes von der folgenden Formel:  
EMI0001.0036     
    vereinigt.

   Nach beendeter Kupplung wird der  zum Teil ausgeschiedene     Trisazofarbstoff    mit       Natriumchlorid    vollständig ausgefällt und  durch Absaugen abgetrennt. Er stellt nach  dem Trocknen ein dunkelbraunes Pulver dar,  das sich in Wasser mit brauner Farbe löst.  Der neue Farbstoff färbt Baumwolle in röt  lich braunen Tönen, deren     Echtheiten    durch  Nachbehandeln mit Kupfersulfat verbessert  werden.



  Additional patent to main patent No. 219654. Process for the production of an azo dye. The subject of this patent is a process for the preparation of a new azo dye, which consists in adding 1 mol of 1. 3 Dioxybenzene on the one hand with 1 mole of the diazo compound from 1-amino-2-oxybenzene-3-carboxylic acid-5-sulfonic acid and on the other hand with 1 mole of the diazoazo compound, which in the one-sided coupling of the tetrazo compound from 4.

       4'-diamino-3. 3'-dichlorodipheny 1 with 1-oxybenzene-2-carboxylic acid is formed, couples. Example: 25.3 parts by weight of 4,4'-diamino-3,3'-dichlorodiphenyl are suspended in 500 parts by volume of water and 50 parts by volume of 10N hydrochloric acid and tetrazotized at 10 ° C. The clear tetrazo solution flows at 0 to 5 ° C. to form a solution of 15 parts by weight of 1-oxybenzene-2-carboxylic acid in 300 parts by volume of 2N sodium carbonate solution. As soon as no <RTI

   ID = "0001.0025"> Tetrazo compound is more detectable, the deposited diazoazo compound is mixed with a soda-alkaline solution of 35.4 parts by weight of the 1-amino-2-oxybenzene-3-carboxylic acid-5-sulfonic acid which has been diazotized by coupling 1 . 3-Dioxybenzene obtained mono azo dye of the following formula:
EMI0001.0036
    united.

   After the coupling has ended, the trisazo dye, which has partially separated out, is completely precipitated with sodium chloride and separated off by suction. After drying, it is a dark brown powder that dissolves in water with a brown color. The new dye dyes cotton in reddish brown shades, the fastness of which is improved by aftertreatment with copper sulfate.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 1 Mol 1 . 3-Dioxybenzol einerseits mit 1 Mo1 der Diazoverbindung aus 1-Amino-2-oxyben- zol-3-carbonsäure-5-sulfonsäure und anderseits mit 1 Mol der Diazoazoverbindung, die bei der einseitigen Kupplung der Tetrazoverbin- dung aus 4. PATENT CLAIM: Process for the production of an azo dye, characterized in that 1 mol of 1. 3-Dioxybenzene on the one hand with 1 mol of the diazo compound from 1-amino-2-oxybenzene-3-carboxylic acid-5-sulfonic acid and on the other hand with 1 mol of the diazoazo compound which is obtained from the one-sided coupling of the tetrazo compound from 4. 4'-Diamino-3.3'-dichlordiphenyl mit 1-Oxybenzol-2-carbonsäure entsteht, kup pelt. Der neue Farbstoff stellt in Form dps Natriumsalzes ein dunkelbraunes Pulver dar, das sich in Wasser mit brauner Farbe löst. Er färbt Baumwolle in rötlich braunen Tönen, deren Echtheiten durch Nachbehan deln mit Kupfersulfat verbessert werden. 4'-Diamino-3.3'-dichlorodiphenyl with 1-oxybenzene-2-carboxylic acid is formed, kup pelt. The new dye is a dark brown powder in the form of sodium salt, which dissolves in water with a brown color. It dyes cotton in reddish brown tones, the fastness of which is improved by post-treating with copper sulfate.
CH222993D 1940-05-15 1941-03-24 Process for the preparation of an azo dye. CH222993A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE222993X 1940-05-15
CH219654T 1941-03-24

Publications (1)

Publication Number Publication Date
CH222993A true CH222993A (en) 1942-08-15

Family

ID=25726314

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222993D CH222993A (en) 1940-05-15 1941-03-24 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH222993A (en)

Similar Documents

Publication Publication Date Title
CH250811A (en) Process for the preparation of a new copper-compatible polyazo dye.
CH222993A (en) Process for the preparation of an azo dye.
DE877350C (en) Process for the production of copper-containing azo dyes
CH222992A (en) Process for the preparation of an azo dye.
CH222996A (en) Process for the preparation of an azo dye.
CH222995A (en) Process for the preparation of an azo dye.
CH222994A (en) Process for the preparation of an azo dye.
DE728886C (en) Process for the preparation of copper complex compounds of substantive azo dyes
DE758428C (en) Process for the preparation of trisazo dyes
DE850042C (en) Process for the production of copper-containing trisazo dyes
CH213429A (en) Process for the production of a copper-containing trisazo dye.
CH218813A (en) Process for the preparation of a disazo dye.
CH235210A (en) Process for the preparation of a copper-containing disazo dye.
CH204144A (en) Process for the preparation of a water-soluble disazo dye.
CH204145A (en) Process for the preparation of a water-soluble disazo dye.
CH136386A (en) Process for the preparation of a polyazo dye.
CH218816A (en) Process for the preparation of a disazo dye.
CH198059A (en) Process for the preparation of a polyazo dye.
CH302037A (en) Process for the preparation of a chromable disazo dye.
CH202728A (en) Process for the preparation of a polyazo dye.
CH304279A (en) Process for the production of a cobalt-containing azo dye.
CH218812A (en) Process for the preparation of a disazo dye.
CH296341A (en) Process for the preparation of a trisazo dye.
CH204149A (en) Process for the preparation of a water-soluble disazo dye.
CH139376A (en) Process for the preparation of a polyazo dye.