CH341250A - Process for the preparation of a disazo dye - Google Patents

Process for the preparation of a disazo dye

Info

Publication number
CH341250A
CH341250A CH341250DA CH341250A CH 341250 A CH341250 A CH 341250A CH 341250D A CH341250D A CH 341250DA CH 341250 A CH341250 A CH 341250A
Authority
CH
Switzerland
Prior art keywords
amino
mol
parts
copper
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Hans Dr Ischer
Lukas Dr Schneider
Original Assignee
Sandoz 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 Sandoz Ag filed Critical Sandoz Ag
Publication of CH341250A publication Critical patent/CH341250A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B31/00Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02Disazo dyes
    • C09B31/08Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00Complex metal compounds of azo dyes
    • C09B45/02Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/24Disazo or polyazo compounds
    • C09B45/28Disazo or polyazo compounds containing copper

Landscapes

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

Description

  

  Zusatzpatent zum Hauptpatent Nr. 285140    Verfahren zur Herstellung eines     Disazofarbstoffes       Gegenstand des vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     Disazofarbstoffes,     welches darin besteht, dass man 1     Mol    der Diazo-         verbindung    aus dem     Aminomonoazofarbstoff    der  Formel  
EMI0001.0006     
    mit 0,65     Mol        2-Benzoylamino-5-oxynaphthalin-7-          sulfonsäure    und 0,35     Mol        2-(4'-Amino)

  -benzoyl-          amino-5-oxynaphthalin-7-sulfonsäure    kuppelt und  das erhaltene     Farbstoffgemisch    durch Behandeln mit  einem kupferabgebenden Mittel unter     entmethylie-          renden    Bedingungen in die     Kupferkomplexverbin-          dung    überführt.  



  Im nachfolgenden Beispiel bedeuten die Teile  Gewichtsteile.  



  <I>Beispiel</I>  47,8 Teile des     Mononatriumsalzes    des     Amino-          monoazofarbstoffes,    welchen man durch saures       Kuppeln    von     diazotierter        1-Oxy-2-aminobenzol-4-          sulfonsäure    mit     1-Methoxy-3-aminobenzol,        Acylie-          ren    der erhaltenen     Aminomonoazoverbindung    mit       3-Methyl-4-nitrobenzol-l-carbonsäurechlorid    und  anschliessendes Reduzieren der Nitrogruppe zur       Aminogruppe    herstellt, werden in 900 Teilen Wasser  gelöst.

   Man versetzt die Lösung mit 24 Teilen  30     a/aiger        Natriumnitritlösung,    kühlt sie mittels Eis  auf eine Temperatur von     5     und lässt ihr rasch 40  Teile 30     a/aige        Salzsäure    zulaufen.

   Nach dreistündi  gem Rühren bei einer Temperatur von 10-15  ist  die     Diazotierung    beendigt; man vereinigt nun die    entstandene Suspension in Gegenwart von über  schüssigem     Natriumcarbonat    mit einer wässerigen  Lösung aus 24 Teilen     2-benzoylamino-5-oxynaph-          thalin-7-sulfonsaurem    Natrium und 13,5 Teilen       2-(4'-amino)-benzoylamino@5-oxynaphthalin-7-sulfon-          saurem    Natrium.

   Das     Gemisch    von     Disazofarbstof-          fen    bildet sich     augenblicklich.    Es wird aus der  warmen Lösung mittels     Natriumchlorid    abgeschie  den, anschliessend     abfiltriert    und getrocknet. Es ist  ein dunkles Pulver, das sich in Wasser mit roter  und in konzentrierter Schwefelsäure mit blauroter  Farbe löst.  



  Zur     überführung    in die     Kupferkomplexverbin-          dung    werden 85,9 Teile des     Dinatriumsalzes    des       Disazofarbstoffgemisches    in 2000 Teilen Wasser ge  löst. Man gibt der Lösung bei 90  allmählich 250  Teile einer     Kupferoxydammoniaklösung,    enthaltend  25 Teile kristallisiertes     Kupfersulfat    und 45 Teile  25     -1/aige        Ammoniaklösung,    zu. Hierauf wird die  Masse zum Sieden erhitzt und ungefähr 6 Stunden  lang am     Rückfluss    gekocht.

   Das Gemisch aus den  gebildeten     Kupferkomplexverbindungen    wird mit       Hilfe    von     Natriumchlorid    aus der     Kupferungslösung     abgeschieden, anschliessend     abfiltriert    und getrock  net. Es färbt Baumwolle und Fasern aus regenerier-           ter        Cellulose        in    roten Tönen von guter Licht- und  Waschechtheit.

   In der Eignung zur     Knitterfestaus-          rüstung    seiner Färbungen übertrifft es den     einheit-          lichen    kupferhaltigen     Disazofarbstoff,    den man  durch Kuppeln der     erfindungsgemässen        Diazoverbin-          dung        mit        2-Benzoylamino-5-oxynaphthalin-7-sulfon-          säure    und     anschliessendes    Kupfern erhält.

   Die glei  chen Eigenschaften wie das     verfahrungsgemäss    her-    gestellte     Farbstoffgemisch    besitzt auch das durch  Mischen von 0,65     Mol    des vorgenannten einheit  lichen kupferhaltigen     Disazofarbstoffes    mit 0,35     Mol     des einheitlichen kupferhaltigen     Disazofarbstoffes,     den man durch Kuppeln der     erfindungsgemässen          Diazoverbindung    mit     2-(4'-Amino)-benzoylamino-5-          oxynaphthaa-7-sulfonsäure    und anschliessendes  Kupfern erhält, gewonnene Gemisch.



  Additional patent to main patent no. 285140 Process for the preparation of a disazo dye The present patent relates to a process for the preparation of a disazo dye, which consists in that 1 mol of the diazo compound from the amino monoazo dye of the formula
EMI0001.0006
    with 0.65 mol of 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid and 0.35 mol of 2- (4'-amino)

  -benzoyl-amino-5-oxynaphthalene-7-sulfonic acid is coupled and the resulting dye mixture is converted into the copper complex compound by treatment with a copper-releasing agent under demethylating conditions.



  In the following example, the parts are parts by weight.



  <I> Example </I> 47.8 parts of the monosodium salt of the amino monoazo dye, which can be obtained by acidic coupling of diazotized 1-oxy-2-aminobenzene-4-sulfonic acid with 1-methoxy-3-aminobenzene, acylers The aminomonoazo compound obtained with 3-methyl-4-nitrobenzene-1-carboxylic acid chloride and subsequent reduction of the nitro group to the amino group are dissolved in 900 parts of water.

   The solution is mixed with 24 parts of 30% sodium nitrite solution, it is cooled to a temperature of 5 using ice and 40 parts of 30% hydrochloric acid are quickly run into it.

   After three hours of stirring at a temperature of 10-15, the diazotization is complete; the resulting suspension is now combined in the presence of excess sodium carbonate with an aqueous solution of 24 parts of 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid sodium and 13.5 parts of 2- (4'-amino) -benzoylamino® 5 -oxynaphthalene-7-sulfonic acid sodium.

   The mixture of disazo dyes forms instantly. It is separated from the warm solution using sodium chloride, then filtered off and dried. It is a dark powder that dissolves in water with a red color and in concentrated sulfuric acid with a blue-red color.



  To convert into the copper complex compound, 85.9 parts of the disodium salt of the disazo dye mixture are dissolved in 2000 parts of water. At 90 °, 250 parts of a copper oxide ammonia solution containing 25 parts of crystallized copper sulfate and 45 parts of 25% ammonia solution are gradually added. The mass is then heated to the boil and refluxed for about 6 hours.

   The mixture of the copper complex compounds formed is precipitated from the coppering solution with the aid of sodium chloride, then filtered off and dried. It dyes cotton and fibers made from regenerated cellulose in red shades that are lightfast and washfast.

   In terms of its suitability for making its dyeings crease-resistant, it exceeds the uniform copper-containing disazo dye obtained by coupling the diazo compound according to the invention with 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid and then copper.

   The same properties as the dye mixture prepared according to the method also have that obtained by mixing 0.65 mol of the aforementioned uniform copper-containing disazo dye with 0.35 mol of the uniform copper-containing disazo dye, which is obtained by coupling the diazo compound according to the invention with 2- (4 ' -Amino) -benzoylamino-5- oxynaphthaa-7-sulfonic acid and subsequent copper is obtained, obtained mixture.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Disazofarbstof- fes, dadurch gekennzeichnet, dass man 1 Mol der Diazoverbindung aus dem Aminomonoazofarbstoff der Formel EMI0002.0031 mit 0,65 Mol 2-Benzoylamino-5-oxynaphthalin-7- sulfonsäure und 0,35 Mol 2-(4'-Amino) PATENT CLAIM Process for the production of a disazo dye, characterized in that 1 mol of the diazo compound is obtained from the amino monoazo dye of the formula EMI0002.0031 with 0.65 mol of 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid and 0.35 mol of 2- (4'-amino) -benzoyl- amino-5-oxynaphthalin-7-sulfonsäure kuppelt und das erhaltene Farbstoffgemisch durch Behandeln mit einem kupferabgebenden Mittel unter entmethylie- renden Bedingungen in die Kupferkomplexverbin- dung überführt. -benzoyl-amino-5-oxynaphthalene-7-sulfonic acid is coupled and the resulting dye mixture is converted into the copper complex compound by treatment with a copper-releasing agent under demethylating conditions.
CH341250D 1950-07-06 1955-10-26 Process for the preparation of a disazo dye CH341250A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH285140T 1950-07-06
CH341250T 1955-10-26

Publications (1)

Publication Number Publication Date
CH341250A true CH341250A (en) 1959-09-30

Family

ID=25732504

Family Applications (1)

Application Number Title Priority Date Filing Date
CH341250D CH341250A (en) 1950-07-06 1955-10-26 Process for the preparation of a disazo dye

Country Status (1)

Country Link
CH (1) CH341250A (en)

Similar Documents

Publication Publication Date Title
CH341250A (en) Process for the preparation of a disazo dye
CH341587A (en) Process for the preparation of a copper-containing disazo dye
CH311482A (en) Process for the preparation of a copper-containing disazo dye.
CH311480A (en) Process for the preparation of a copper-containing disazo dye.
CH311481A (en) Process for the preparation of a copper-containing disazo dye.
AT162613B (en) Process for the preparation of new monoazo dyes
CH329256A (en) Process for the preparation of a disazo dye
CH301639A (en) Process for the production of a copper-containing trisazo dye.
CH303898A (en) Process for the production of a copper-containing trisazo dye.
CH301641A (en) Process for the production of a copper-containing trisazo dye.
CH303897A (en) Process for the production of a copper-containing trisazo dye.
CH369842A (en) Process for the preparation of a copperable disazo dye
CH259325A (en) Process for the preparation of an azo dye.
CH311483A (en) Process for the preparation of a copper-containing disazo dye.
CH332043A (en) Process for the preparation of a disazo dye
CH302807A (en) Process for the production of a copper-containing trisazo dye.
CH303899A (en) Process for the preparation of a copper-containing tetrakisazo dye.
CH303900A (en) Process for the production of a copper-containing trisazo dye.
CH301446A (en) Process for the preparation of a copper-containing disazo dye.
CH259329A (en) Process for the preparation of an azo dye.
CH307167A (en) Process for the production of a copper-containing azo dye.
CH303909A (en) Process for the preparation of a copper-containing disazo dye.
CH208538A (en) Process for the preparation of an azo dye.
CH303910A (en) Process for the preparation of a copper-containing disazo dye.
CH302037A (en) Process for the preparation of a chromable disazo dye.