CH172368A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH172368A
CH172368A CH172368DA CH172368A CH 172368 A CH172368 A CH 172368A CH 172368D A CH172368D A CH 172368DA CH 172368 A CH172368 A CH 172368A
Authority
CH
Switzerland
Prior art keywords
dye
new dye
blue
production
nitro
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH172368A publication Critical patent/CH172368A/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
    • C09B43/00Preparation of azo dyes from other azo compounds
    • C09B43/08Preparation of azo dyes from other azo compounds by reduction
    • C09B43/10Preparation of azo dyes from other azo compounds by reduction with formation of a new azo or an azoxy bridge
    • 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
    • C09B35/00Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02Disazo dyes
    • C09B35/039Disazo dyes characterised by the tetrazo component
    • C09B35/24Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl amine

Description

  

  Verfahren zur Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass man einen neuen  Farbstoff erhält, wenn man den     Azofarbstoff     aus dianotierter     5-Nitro-2-arninoberrzoesäure     und     1-Amino-8-oxyrraplrthalin-3.6-disulfon-          säure    mit solchen     Reduktionsmitteln    in alkali  schem Medium behandelt, die die Nitrogruppe  in die     Azogruppe,    unter Verkettung zweier  Moleküle, überführen.  



  Der neue Farbstoff bildet ein dunkles  Pulver, das sich in Wasser mit     violettblauer     Farbe löst. Es färbt aus wässeriger     Lösung     Baumwolle oder     Viskoseseide    in     rotstichig-          blauen    Tönen, die durch Nachbehandeln mit  Kupfersulfat rein grünstickig blau und licht  echt werden.  



  <I>Beispiel:</I>  10,1 Teile des     Farbstoffes,    den man  durch Vereinigen von dianotierter     5-Nitro-2-          aminobenzoesäure    mit     1-Arnirro-8-oxyrraphtha-          lin-3.6-disulfonsäur-e    erhält, werden in Wasser  gelöst und mit einer Lösung aus<B>9</B> Teilen         kristallisiertem        Zinncblorürin    überschüssigem       Natriumhydroxyd    versetzt. Es wird nun auf  etwa 60  erwärmt und so lange gerührt, bis  die Farbe, die gegen Blau umschlägt, -sich  nicht mehr ändert.

   Der Farbstoff wird nun  mit     Natriumchlorid    ausgefällt und     abfiltriert.     Er bildet ein dunkles Pulver, das sich in  Wasser mit     violettblauer    Farbe löst. Er färbt  aus wässeriger Lösung Baumwolle oder     Vis-          koseseide    in rotstickig blauen Tönen, die  durch Nachbehandeln mit Kupfersulfat rein  grünstickig blau und lichtecht werden.



  Process for the production of a new dye. It has been found that a new dye is obtained if the azo dye is treated from dianotated 5-nitro-2-arninoberrzoic acid and 1-amino-8-oxyrraplrthalin-3,6-disulfonic acid with reducing agents in an alkaline medium which contain the nitro group into the azo group, with two molecules linked.



  The new dye forms a dark powder that dissolves in water with a purple-blue color. From an aqueous solution, it dyes cotton or viscose silk in reddish-blue tones, which after treatment with copper sulphate become pure greenish-blue and light-fast.



  <I> Example: </I> 10.1 parts of the dye, which is obtained by combining dianotated 5-nitro-2-aminobenzoic acid with 1-amirro-8-oxyrraphthalin-3,6-disulfonic acid, are in water dissolved and mixed with a solution of <B> 9 </B> parts of crystallized tin chloride and excess sodium hydroxide. It is now heated to about 60 and stirred until the color, which turns blue, no longer changes.

   The dye is then precipitated with sodium chloride and filtered off. It forms a dark powder that dissolves in water with a purple-blue color. From an aqueous solution, it dyes cotton or viscose silk in red-tinged blue tones, which become pure green-tinged blue and lightfast when treated with copper sulfate.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man den Azofarbstoff aus dianotierter 5-Nitro-2- amirrobenzoesäure und 1-.Amino-8-oxynaph- tlralin-3.6-disulfonsäur-e mit solchen Re duktionsmitteln in alkalischem Medium be handelt, die die Nitrogruppe in die Azogruppe, unter Verkettung zweier Moleküle, überführen, Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit violettblauer Farbe löst. PATENT CLAIM: A process for the production of a new dye, characterized in that the azo dye from dianotated 5-nitro-2-amirrobenzoic acid and 1-amino-8-oxynaphthaline-3.6-disulfonic acid is used with such reducing agents in an alkaline medium which convert the nitro group into the azo group by linking two molecules. The new dye forms a dark powder that dissolves in water with a purple-blue color. Es färbt aus wässeriger Lösung Baumwolle oder Viskoseseide in rotstichig- blauen Tönen, die durch Nachbehandeln mit Kupfersulfat rein grünstichig blau und licht echt werden. From an aqueous solution, it dyes cotton or viscose silk in red-tinged blue tones, which after treatment with copper sulphate become pure green-tinged blue and light-fast.
CH172368D 1933-05-25 1933-05-25 Process for the production of a new dye. CH172368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH172368T 1933-05-25

Publications (1)

Publication Number Publication Date
CH172368A true CH172368A (en) 1934-10-15

Family

ID=4423829

Family Applications (1)

Application Number Title Priority Date Filing Date
CH172368D CH172368A (en) 1933-05-25 1933-05-25 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH172368A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055259A1 (en) * 1999-03-13 2000-09-21 Basf Aktiengesellschaft Azoxy dyes and their cu complexes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055259A1 (en) * 1999-03-13 2000-09-21 Basf Aktiengesellschaft Azoxy dyes and their cu complexes
JP2002539316A (en) * 1999-03-13 2002-11-19 ビーエーエスエフ アクチェンゲゼルシャフト Azoxy dyes and their copper complexes
US6727351B1 (en) 1999-03-13 2004-04-27 Basf Aktiengesellschaft Azoxy dyes and their Cu complexes
US6903197B2 (en) 1999-03-13 2005-06-07 Basf Aktiengesellschaft Azoxy dyes and copper complexes thereof

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