CH198059A - Process for the preparation of a polyazo dye. - Google Patents
Process for the preparation of a polyazo dye.Info
- Publication number
- CH198059A CH198059A CH198059DA CH198059A CH 198059 A CH198059 A CH 198059A CH 198059D A CH198059D A CH 198059DA CH 198059 A CH198059 A CH 198059A
- Authority
- CH
- Switzerland
- Prior art keywords
- molecule
- preparation
- dye
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/38—Trisazo dyes ot the type
- C09B35/44—Trisazo dyes ot the type the component K being a hydroxy amine
- C09B35/46—Trisazo dyes ot the type the component K being a hydroxy amine the component K being an amino naphthol
- C09B35/463—D being derived from diaminodiphenyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 194457. Verfahren zur Darstellung eines Polyazofarbstoffes. Das vorliegende Patent betrifft ein Ver fahren zur Darstellung eines blauen Polyazo- larbstoffes und- ist dadurch gekennzeichnet, dass man ein Molekül Tetrazobenzidin in saurer Lösung mit einem Molekül 1,8-Amino- naphtol <B>- 3,6 -</B> disulfonsäure kombiniert,
das Zwischeaprodukt zuerst mit einem Molekül Diazobenzolparasulfonsäure in alkalischer Lö sung kuppelt und hierauf mit einem Molekül des primären Kondensationsproduktes aus einem Molekül 1,8-Amiiionaphtol-3,6-disul- fonsäure und einem Molekül Cyanurchlorid,
EMI0001.0015
<I>Beispiel:
</I> 18,4 Teile Benzidin werden in der übli- chenWeise tetrazotiert und mit 34,1 Teilen 1,8-Aminonaphtol-3,6-disulfonsäure (Mono- natriumsalz) mineralsauer gekuppelt. Ist die Bildung des Zwischenproduktes beendet, so wird es mit der Diazoverbindung aus<B>17,3</B> Teilen'AminobenzolparasulfonsäLlre sodaalka- Lisch vereinigt.
Nach erfolgter Kupplung zum Digazofarbstoff lässt man eine alkalische Lö sung von 46,6 Teilen des primären Konden sationsproduktes, hergestellt durch Konden sation von<B>18,5</B> Teilen Cyanurchlorid mit <B>31,9</B> Teilen 1,8-Aminonaphtol-3,6-disulfon- säure, zufliessen. Die Kupplung erfolgt rasch und der Farbstoff wird durch Aussalzen der angesäuerten Kupplungsflüssigkeit ausgeschie den. Die nach der Filtration erhaltene saure Farbstoffpaste wird neutralisiert und zur Trockne, verdampft.
Der neue Farbstoff stellt ei# grauschwar zes, etwas bronzierendes, in Wasser mit tief blauer Farbe lösliches Pulver dar und färbt Leder verschiedenster Gerbungsart in schönen, neutral blauen Tönen- an.
Additional patent to main patent No. 194457. Process for the preparation of a polyazo dye. The present patent relates to a method for the preparation of a blue polyazolar material and is characterized in that one molecule of tetrazobenzidine in acidic solution is mixed with one molecule of 1,8-aminonaphtol <B> - 3,6 - </B> disulfonic acid combined,
the intermediate product first couples with a molecule of diazobenzenesulfonic acid in alkaline solution and then with a molecule of the primary condensation product of one molecule of 1,8-amino-naphthol-3,6-disulfonic acid and a molecule of cyanuric chloride,
EMI0001.0015
<I> example:
18.4 parts of benzidine are tetrazotized in the usual way and coupled with 34.1 parts of 1,8-aminonaphthol-3,6-disulfonic acid (monosodium salt) in mineral acid form. When the formation of the intermediate product has ended, it is combined in a soda-alkali form with the diazo compound composed of 17.3 parts of aminobenzene-parasulfonic acid.
After coupling to the digazo dye, an alkaline solution of 46.6 parts of the primary condensation product, produced by condensation of 18.5 parts of cyanuric chloride with 31.9 parts, is left 1,8-aminonaphthol-3,6-disulfonic acid, flow in. The coupling takes place quickly and the dye is eliminated by salting out the acidified coupling fluid. The acidic dye paste obtained after filtration is neutralized and evaporated to dryness.
The new dye is a gray-black, somewhat bronzing powder that is soluble in water with a deep blue color and dyes leather of various types of tanning in beautiful, neutral blue tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH198059T | 1937-03-13 | ||
US1170174XA | 1955-09-14 | 1955-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH198059A true CH198059A (en) | 1938-05-31 |
Family
ID=25723058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH198059D CH198059A (en) | 1937-03-13 | 1937-03-13 | Process for the preparation of a polyazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH198059A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2993885A (en) * | 1956-06-29 | 1961-07-25 | Ciba Ltd | 2-naphthylazo phenylamine-4, 6-dichlorotriazines |
-
1937
- 1937-03-13 CH CH198059D patent/CH198059A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2993885A (en) * | 1956-06-29 | 1961-07-25 | Ciba Ltd | 2-naphthylazo phenylamine-4, 6-dichlorotriazines |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH250811A (en) | Process for the preparation of a new copper-compatible polyazo dye. | |
CH198059A (en) | Process for the preparation of a polyazo dye. | |
CH198053A (en) | Process for the preparation of a polyazo dye. | |
CH198056A (en) | Process for the preparation of a polyazo dye. | |
CH198054A (en) | Process for the preparation of a polyazo dye. | |
CH198055A (en) | Process for the preparation of a polyazo dye. | |
CH198057A (en) | Process for the preparation of a polyazo dye. | |
CH202729A (en) | Process for the preparation of a polyazo dye. | |
DE728886C (en) | Process for the preparation of copper complex compounds of substantive azo dyes | |
CH198060A (en) | Process for the preparation of a polyazo dye. | |
CH202728A (en) | Process for the preparation of a polyazo dye. | |
CH263524A (en) | Process for the preparation of an azo dye. | |
CH191165A (en) | Process for the preparation of a new monoazo dye. | |
CH209103A (en) | Process for the preparation of a green trisazo dye. | |
CH263522A (en) | Process for the preparation of an azo dye. | |
CH198058A (en) | Process for the preparation of a polyazo dye. | |
CH278186A (en) | Process for the preparation of a chromium-containing disazo dye. | |
CH222993A (en) | Process for the preparation of an azo dye. | |
CH141877A (en) | Process for the preparation of a stain-coloring disazo dye. | |
CH263523A (en) | Process for the preparation of an azo dye. | |
CH195533A (en) | Process for the preparation of a pentakisazo dye. | |
CH209104A (en) | Process for the preparation of a green trisazo dye. | |
CH139375A (en) | Process for the preparation of a polyazo dye. | |
CH210999A (en) | Process for the preparation of a new water-soluble disazo dye. | |
CH198319A (en) | Process for the preparation of a pentakisazo dye. |