CH135956A - Process for the preparation of a new trisazo dye. - Google Patents
Process for the preparation of a new trisazo dye.Info
- Publication number
- CH135956A CH135956A CH135956DA CH135956A CH 135956 A CH135956 A CH 135956A CH 135956D A CH135956D A CH 135956DA CH 135956 A CH135956 A CH 135956A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- gray
- new
- blue
- acid
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/16—Trisazo dyes
- C09B31/22—Trisazo dyes from a coupling component "D" containing directive hydroxyl and amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Description
Verfahren zur Uferstellung eines neuen Trisazofarbstoffes. Es wurde befunden, dass man zu einem neuen wertvollen Trisazofarbstoff gelängt, wenn man den diazotierten Disa.zofarbstoff, der erhalten wird durch Kuppeln von diazotierter 2 --'#.minona.phthadin-4,i8-disulfo- säure mit a-Naphthylamin, Diazotieren des so erhältlichen Xionoazofarbstoffes, Weiter kuppeln mit dem technischen Gemisch der 1,
6- und 1,7-Aminona.phthalinsulfosäure und Dia,zotieren, mit 1-Amino-5-oxynaphthalin-7- sulfosäure in alkalischem Medium vereinigt. Der neue Farbstoff stellt ein schwarzes Pulver dar, welches sich in Wasser auf Solozusatz mit blaugrauer Farbe löst. In konzentrierter Schwefelsäure löst sich das Produkt grünstichig blaugrau auf.
Die Färbung auf Baumwolle stellt ein reines Blaugrau dar und ist weiter dia.zotierbar. <I>Beispiel:</I> 34,8 Teile 2-a.minonaphtha.lin-4,8-disulfo- saures Natron werden in üblicher Weise mit lNTitrit und Salzsäure diazotiert und mit 14,5 Teilen a-Naphthylamin vereinigt. Der entstandene Farbstoff wird isoliert, in üblicher Weise weiter diazotiert und mit 22,3 Teilen des technischen Gemisches der 1,6- und 1,7-Aminonaphthalinsulfosäure ge kuppelt.
Nach vollendeter Kombination wird der Disazofarbstoff abermals dia.zotier-t und dann die gebildete Diazoverbindung unter Rühren zu einer sodaalkalischen Lösung von 24 Teilen der 1-Amino-5-oxynaphthalin-7- sulfosäure zulaufen gelassen. Die Kombi nation ist sofort fertig und der Trisazofarb- stoff wird ausgesalzen, filtriert und ge trocknet.
Process for creating a new trisazo dye bank It has been found that a new valuable trisazo dye is obtained if the diazotized disazo dye, which is obtained by coupling diazotized 2 - '#. Minona.phthadin-4, 18-disulfonic acid with a-naphthylamine, Diazotization of the xionoazo dye obtainable in this way, further coupling with the technical mixture of 1,
6- and 1,7-Aminona.phthalinsulfosäure and Dia, zotieren, combined with 1-Amino-5-oxynaphthalin-7-sulfonic acid in an alkaline medium. The new dye is a black powder, which dissolves in water on a solo addition with a blue-gray color. In concentrated sulfuric acid, the product dissolves in a greenish blue-gray.
The coloring on cotton is a pure blue-gray and can be further displayed. <I> Example: </I> 34.8 parts of 2-a.minonaphtha.lin-4,8-disulphonic acid soda are diazotized in the customary manner with INtitrite and hydrochloric acid and combined with 14.5 parts of a-naphthylamine. The resulting dye is isolated, further diazotized in the usual way and coupled with 22.3 parts of the technical mixture of 1,6- and 1,7-aminonaphthalenesulfonic acid.
After the combination is complete, the disazo dye is again dia.zotier-t and then the diazo compound formed is allowed to run in with stirring to a soda-alkaline solution of 24 parts of 1-amino-5-oxynaphthalene-7-sulfonic acid. The combination is ready immediately and the trisazo dye is salted out, filtered and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH131818T | 1927-10-31 | ||
CH135956T | 1927-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH135956A true CH135956A (en) | 1929-10-15 |
Family
ID=25711692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH135956D CH135956A (en) | 1927-10-31 | 1927-10-31 | Process for the preparation of a new trisazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH135956A (en) |
-
1927
- 1927-10-31 CH CH135956D patent/CH135956A/en unknown
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