CH135959A - Process for the preparation of a new trisazo dye. - Google Patents
Process for the preparation of a new trisazo dye.Info
- Publication number
- CH135959A CH135959A CH135959DA CH135959A CH 135959 A CH135959 A CH 135959A CH 135959D A CH135959D A CH 135959DA CH 135959 A CH135959 A CH 135959A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- dye
- technical mixture
- new
- blue
- 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)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 131818. Verfahren zur Herstellung eines neuen Trisazofarbstoffes. Es wurde gefunden, .dass man zu einem neuen wertvollen Trisazofarbstoff gelang:
, wenn man den diazotierten Disazofarbstoff, der erhalten wird durch Kuppeln des diazo-- tierten technischen Gemisches der 1,6- und 1,7-Aminonaphtha,linsulfosäure mit,dem tech nischen Gemisch -der 1,6- und 1,7-Amino- naphthalinsulfosäure, Diazotieren des so er hältlichen Monoazofarbstoffes, Weiterkup peln mit dem technischen Gemisch .der 1,6- und 1,
7-Aminonaphthalinsulfosäure und Di- azotieren, mit 1-Amino-5-oxynaphthalin-7- sulfosäure in alkalischem Medium vereinigt. Der neue Farbstoff stellt ein schwarzes Pul ver dar, welches sieh in Wasser auf Solda- zusatz mit blaugrauer Farbe löst. Die Lö sung in konzentrierter Schwefelsäure ist grünstichig blaugrau. Auf Baumwolle er zeugt ,das Produkt eine reine blaugraue Fär bung.
<I>Beispiel:</I> 22,3 Teile,des technischen Gemisches der 1,6- und 1,7-Aminonaphthalinsulfosäure wer den wie üblich diazotiert und mit 22,3 Tei- len des technischen Gemisches der 1,6- und 1,7 - Aminonaphthalinsulfosäure gekuppelt.
Der gebildete Monoazofarbstoff wird in be kannter Weise mit Nitrit und Salzsäure wei ter diazotiert und die entstandene Diazover- bindung mit<B>22,3</B> Teilen ,des technischen Ge misches der 1,6- und 1,7-Amin.onaphthalin- sulfosäure gekuppelt. Nach vollendeter Kupplung wird der Disazofarbstoff mit Kochsalz ausgesalzen und filtriert.
Nachdem Anschlämmen des Filterkuchens mit Wasser fügt man die nötige Menge :Salzsäure hinzu und diazotiert wie üblich durch Zusatz der berechneten Menge Nitrit bei 0 . Sobald die Diazotierung vollendet ist, lässt man die Di- azoverbindung unter Rühren zu einer soda- alkalischen Lösung von 24 Teilen der 1- Amino-5-oxynaphthalin-7-sulfosäure zulau fen.
Die Kombination ist sofort fertig und der Trisazofarbstoff wird .ausgesalzen, fil triert und getrocknet.
<B> Additional patent </B> to main patent no. 131818. Process for the production of a new trisazo dye. It was found that a new valuable trisazo dye was obtained:
, if you use the diazotized disazo dye, which is obtained by coupling the diazo-- tied technical mixture of 1,6- and 1,7-aminonaphtha, linsulfonic acid with the technical mixture -the 1,6- and 1,7-amino - naphthalenesulfonic acid, diazotization of the monoazo dye available in this way, further coupling with the technical mixture of the 1,6- and 1,
7-aminonaphthalene sulfonic acid and diazoic acid combined with 1-amino-5-oxynaphthalene-7-sulfonic acid in an alkaline medium. The new dye is a black powder that dissolves in water with a blue-gray color on a soldier additive. The solution in concentrated sulfuric acid is greenish blue-gray. On cotton it shows that the product has a pure blue-gray color.
<I> Example: </I> 22.3 parts of the technical mixture of 1,6- and 1,7-aminonaphthalenesulfonic acid are diazotized as usual and with 22.3 parts of the technical mixture of 1,6- and 1,7-aminonaphthalene sulfonic acid coupled.
The monoazo dye formed is further diazotized in a known manner with nitrite and hydrochloric acid and the diazo compound formed is 22.3 parts of the technical mixture of 1,6- and 1,7-amines. onaphthalene sulfonic acid coupled. After 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 is added: hydrochloric acid and diazotized as usual by adding the calculated amount of nitrite at 0. As soon as the diazotization is complete, the diazo compound 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 |
---|---|---|---|
CH135959T | 1927-10-31 | ||
CH131818T | 1927-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH135959A true CH135959A (en) | 1929-10-15 |
Family
ID=25711695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH135959D CH135959A (en) | 1927-10-31 | 1927-10-31 | Process for the preparation of a new trisazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH135959A (en) |
-
1927
- 1927-10-31 CH CH135959D patent/CH135959A/en unknown
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