CH135957A - Process for the preparation of a new trisazo dye. - Google Patents
Process for the preparation of a new trisazo dye.Info
- Publication number
- CH135957A CH135957A CH135957DA CH135957A CH 135957 A CH135957 A CH 135957A CH 135957D A CH135957D A CH 135957DA CH 135957 A CH135957 A CH 135957A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- sulfonic acid
- new
- preparation
- gray
- 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)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen Trisazofarbstoffes. Es wurde gefunden, dass man zu einem neuen wertvollen Trisazofarbstoff gelangt, wenn man den Jiazotierten Disazofarbstoff, der erhalten wird durch Kuppeln von diano tierter 1-Aminobenzol-3-sulfosäure mit a- Naphthylamin, Diazotieren .des so erhält lichen Monoazofarbstoffes, Weiterkuppeln mit dem technischen Gemisch der J.,6- und 1,
7-Aminonaphthalinsulfosäure und Diazotie- ren, mit 1-Amino-5-oxynaphthalin-7-sulfo- säure in .alkalischem Medium vereinigt. Der neue Farbstoff stellt ein schwarzes Pulver dar, welches sich in Wasser auf Solozusatz mit :blaugrüner Farbe löst. Die Lösung in konzentrierter -Schwefelsäure ist grünstichil blaugrau. Auf Baumwolle erzeugt das Pro dukt eine :grüngraue Färbung.
<I>Beispiel:</I> 19,5 Teile 1-aminobenzol-3-sulfosaures Natron werden in üblicher Weise mit Nitrit und Salzsäure diazotiert und mit 14,5 Teilen a-N aphthylamin vereinigt. Der entstandene Farbstoff wird isoliert, in üblicher Weise weiter dianotiert und mit<B>22,3</B> Teilen des technischen Gemisches der 1,6- lind 1,7 Aminonaphthalinsulfosäure gekuppelt.
Nach vollendeter :Kupplung wird .der Disazofarb- stoff mit Kochsalz ausgesalzen und filtriert. Nach dem Anschlämmen des Filterkuchens mit Wasser fügt man ,die nötige Menge Salz säure hinzu und dianotiert wie üblich durch Zusatz der berechneten Menge Nitrit bei 0 .
Sobald die Dianotierung vollendet ist, ,lässt man die Diazoverbindung unter Rühren zu einer sodaalkalischen Lösung von 24 Teilen .der 1-Amino-5-oxynaphthalin-7-sulfosäure -zulaufen. Die Kombination ist sofort fertig und der Trisazofarbstaff wird ausgesalzen, filtriert und getrocknet.
Process for the preparation of a new trisazo dye. It has been found that a new valuable trisazo dye is obtained if the jiazotized disazo dye, which is obtained by coupling diano-tated 1-aminobenzene-3-sulfonic acid with a-naphthylamine, diazotizing the monoazo dye thus obtained, further coupling with the technical mixture of J., 6- and 1,
7-aminonaphthalene sulfonic acid and diazotization, combined with 1-amino-5-oxynaphthalene-7-sulfonic acid in an alkaline medium. The new dye is a black powder, which dissolves in water on solo addition with: blue-green color. The solution in concentrated sulfuric acid is greenish blue-gray. On cotton, the product creates a: green-gray color.
<I> Example: </I> 19.5 parts of 1-aminobenzene-3-sulphonic acid sodium are diazotized in the usual way with nitrite and hydrochloric acid and combined with 14.5 parts of a-naphthylamine. The resulting dye is isolated, further dianotized in the customary manner and coupled with 22.3 parts of the technical mixture of 1,6- and 1,7-aminonaphthalene sulfonic acid.
After the coupling is complete, the disazo dye is salted out with sodium chloride and filtered. After the filter cake has been slurried with water, the required amount of hydrochloric acid is added and dianotized as usual by adding the calculated amount of nitrite at 0.
As soon as the dianotation is complete, the diazo compound is allowed to run into a soda-alkaline solution of 24 parts of 1-amino-5-oxynaphthalene-7-sulfonic acid with stirring. The combination is ready immediately and the trisazo color is salted out, filtered and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH131818T | 1927-10-31 | ||
CH135957T | 1927-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH135957A true CH135957A (en) | 1929-10-15 |
Family
ID=25711693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH135957D CH135957A (en) | 1927-10-31 | 1927-10-31 | Process for the preparation of a new trisazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH135957A (en) |
-
1927
- 1927-10-31 CH CH135957D patent/CH135957A/en unknown
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