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
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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/08—Preparation of azo dyes from other azo compounds by reduction
- C09B43/10—Preparation of azo dyes from other azo compounds by reduction with formation of a new azo or an azoxy bridge
-
- 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
- C09B35/24—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl amine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000055259A1 (en) * | 1999-03-13 | 2000-09-21 | Basf Aktiengesellschaft | Azoxy dyes and their cu complexes |
-
1933
- 1933-05-25 CH CH172368D patent/CH172368A/en unknown
Cited By (4)
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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