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CH308432A - Process for the preparation of a metal-containing azo dye. - Google Patents

Process for the preparation of a metal-containing azo dye.

Info

Publication number
CH308432A
CH308432A CH308432DA CH308432A CH 308432 A CH308432 A CH 308432A CH 308432D A CH308432D A CH 308432DA CH 308432 A CH308432 A CH 308432A
Authority
CH
Switzerland
Prior art keywords
copper
sulfonic acid
azo dye
releasing agent
metal
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 CH308432A publication Critical patent/CH308432A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)

Description

       

  <B>Zusatzpatent</B>     ztnn    Hauptpatent Nr. 305716.    Verfahren zur     Herstellung    eines metallhaltigen     Azofarbatoffes.       Es wurde gefunden, dass man zu einem  langt, wenn man den     Azofarbstoff    der Formel  
EMI0001.0005     
    in welcher die     Sulfonsäuregruppe    dieselbe  Stellung einnimmt wie die     Sulfonsäuregruppe          (ler    durch     Sulfonierung    von     2-(4'-Amino-          pheny        1)-6-methylbenzthiazol    mit konzentrier-  
EMI0001.0013     
  
    ter <SEP> Schwefelsäure <SEP> erhältlichen <SEP> Sulfonsäure,

   <SEP> in       wertvollen metallhaltigen     Azofarbstoff    ge-    von 100  in     wässrigem    Medium durchzuführen.  Von besonderem Vorteil ist hier das an sich  bekannte Verfahren, wonach in Gegenwart von ,       Oxyalkylaminen,    insbesondere     Äthanolamin     
EMI0001.0018     
  
    bzw. <SEP> den <SEP> sich <SEP> davon <SEP> ableitenden <SEP> Kupferkom-         verseift.

   Der     Aminomonoazofarbstoff    wird aus  dem Gemisch abgetrennt, in Wasser unter Zu  satz von     Natriumhydroxyd    bis zur schwach  alkalischen Reaktion gelöst, mit S Teilen Na  triumnitrit versetzt und durch Eingiessen von  30 Teilen 30%iger     Salzsäure        weiterdiazotiert.     Man rührt     \?    Stunden bei etwa 35  und kup  pelt die     Diazoverbindung    in     natriumcarbonat-          oder        natriumbicarbonatalkaliseher    Lösung  mit 39 Teilen     2-Phenylamino-S-oxynaphtha.lin-          6,

  3'-disulfonsäure.    Die Kupplung wird durch  Zusatz von wenig     Pyridin    oder     Picolin    stark       beschleunigt.    Nach beendeter Kupplung wird  der     Disazofarbstoff        aasgesalzen    und     abfil-          triert.       Die     Farbstoffpaste    wird in 1500 Teilen  Wasser unter Zusatz von 30 Teilen     3lono-          äthanolamin    gelöst und die     Lösung    mit einer       ammoniakalischen    Lösung von Kupfersulfat       (entsprechend    27,

  5 Teile     CuS0.t.    5     H.0)    ver  setzt.     a     Man behandelt. unter     Riiekflusskühlung     6 bis 8 Stunden bei 95 . Die entstandene     Kup-          ferkomplexverbindun-    wird aasgesalzen, ab  filtriert und getrocknet.



  <B> Additional patent </B> ztnn main patent No. 305716. Process for the production of a metal-containing azo carbate. It has been found that one can get by using the azo dye of the formula
EMI0001.0005
    in which the sulfonic acid group occupies the same position as the sulfonic acid group (ler by sulfonation of 2- (4'-aminopheny 1) -6-methylbenzothiazole with concentrated
EMI0001.0013
  
    the <SEP> sulfuric acid <SEP> available <SEP> sulfonic acid,

   <SEP> in valuable metal-containing azo dye ge of 100 in an aqueous medium. The process known per se, according to which, in the presence of, oxyalkylamines, in particular ethanolamine, is particularly advantageous here
EMI0001.0018
  
    or <SEP> the <SEP> <SEP> derived from <SEP> <SEP> copper-saponified.

   The aminomonoazo dye is separated off from the mixture, dissolved in water with the addition of sodium hydroxide until a weakly alkaline reaction, mixed with S parts of sodium nitrite and further diazotized by pouring in 30 parts of 30% hydrochloric acid. One stirs \? Hours at about 35 and couples the diazo compound in sodium carbonate or sodium bicarbonate alkali solution with 39 parts of 2-phenylamino-S-oxynaphtha.lin- 6,

  3'-disulfonic acid. The coupling is greatly accelerated by adding a little pyridine or picoline. After the coupling has ended, the disazo dye is salted ashes and filtered off. The dye paste is dissolved in 1500 parts of water with the addition of 30 parts of 3lonoethanolamine and the solution with an ammoniacal solution of copper sulfate (corresponding to 27,

  5 parts CuS0.t. 5 H.0). a Man treated. with reverse flow cooling for 6 to 8 hours at 95. The resulting copper complex compound is salted, filtered off and dried.


    

Claims (1)

PATENTAN SPRUCH Verfahren zur Herstelhln- eines metall haltigen Azofarbstoffes, dadurch gekennzeich net, da.ss man den Azofarbstoff der Formel EMI0002.0036 in welcher die Sulfonsäuregruppe dieselbe I tellung einnimmt wie die Sulfonsäuregruppe der durch Sulfonierung von 2-(4'-Amino- phenyl) PATENT ANNOUNCEMENT Process for the production of a metal-containing azo dye, characterized in that one uses the azo dye of the formula EMI0002.0036 in which the sulfonic acid group assumes the same position as the sulfonic acid group of the sulfonation of 2- (4'-aminophenyl) -6-methylbenzthiazol mit konzentrier ter Schwefelsäure erhältlichen Sulfonsäure, in der Weise mit kupferabgebenden Mitteln be handelt, dass unter Aufspaltung der Metlioxy- gruppe der o,o'-Dioxyazokupferli:oinplex ent steht. Der neue Farbstoff bildet ein graues Pul ver, das sich in warmem Wasser mit grau blauer Farbe löst und Baumwolle in neutral grauen Tönen färbt. UNTERANSPRÜCHE: 1. Verfahren gemäss Patentanspi-tteh, da durch gekennzeichnet, dass man als kupfer abgebendes Mittel ein Kupfertetraminin ver wendet. 2. -6-methylbenzthiazole sulfonic acid obtainable with concentrated sulfuric acid, treated in such a way with copper-releasing agents that the o, o'-dioxyazokupferli: oinplex is formed with splitting of the metlioxy group. The new dye forms a gray powder that dissolves in warm water with a gray-blue color and dyes cotton in neutral gray tones. SUBSTANTIAL CLAIMS: 1. Process according to patent application, characterized in that a copper tetraminine is used as the copper releasing agent. 2. Verfahren gemäss Patentansprtieh, da durch gekennzeichnet, dass man die Beband- lung mit dem kupferabgebenden Mittel wäh rend längerer Zeit bei erhöhter Temperatur und in wässrigem Medium durchführt. 3. Verfahren gemäss Patentansprueli, da durch gekennzeichnet, dass man die Behand lung mit dein kupferabgebenden Mittel in Ge genwart eines Oxyalkylamins durchführt. Process according to the patent claim, characterized in that the treatment with the copper-releasing agent is carried out for a relatively long time at an elevated temperature and in an aqueous medium. 3. The method according to patent claims, characterized in that the treatment with your copper-releasing agent is carried out in the presence of an oxyalkylamine.
CH308432D 1951-12-21 1951-12-21 Process for the preparation of a metal-containing azo dye. CH308432A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH308432T 1951-12-21
CH305716T 1952-11-20

Publications (1)

Publication Number Publication Date
CH308432A true CH308432A (en) 1955-07-15

Family

ID=25734979

Family Applications (1)

Application Number Title Priority Date Filing Date
CH308432D CH308432A (en) 1951-12-21 1951-12-21 Process for the preparation of a metal-containing azo dye.

Country Status (1)

Country Link
CH (1) CH308432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115521193A (en) * 2022-09-30 2022-12-27 陕西蒲城海泰新材料产业有限责任公司 Industrial preparation method of 3,3',6,6' -tetramethoxy-2,2 ' -binaphthyl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115521193A (en) * 2022-09-30 2022-12-27 陕西蒲城海泰新材料产业有限责任公司 Industrial preparation method of 3,3',6,6' -tetramethoxy-2,2 ' -binaphthyl

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