CH148995A - Process for the production of an etch-resistant dye of the gallocyanin series. - Google Patents
Process for the production of an etch-resistant dye of the gallocyanin series.Info
- Publication number
- CH148995A CH148995A CH148995DA CH148995A CH 148995 A CH148995 A CH 148995A CH 148995D A CH148995D A CH 148995DA CH 148995 A CH148995 A CH 148995A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- etch
- gallocyanin
- series
- color
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 6
- YBGOLOJQJWLUQP-UHFFFAOYSA-N gallocyanin Chemical class OC(=O)C1=CC(=O)C(O)=C2OC3=CC(N(C)C)=CC=C3N=C21 YBGOLOJQJWLUQP-UHFFFAOYSA-N 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title description 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 8
- -1 anilino compound Chemical class 0.000 claims description 6
- RBQIPEJXQPQFJX-UHFFFAOYSA-N 3,4,5-trihydroxybenzamide Chemical compound NC(=O)C1=CC(O)=C(O)C(O)=C1 RBQIPEJXQPQFJX-UHFFFAOYSA-N 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 3
- LVWRXVYDWDCORS-UHFFFAOYSA-N N,N,3-trimethyl-2-nitrosoaniline Chemical compound N(=O)C1=C(N(C)C)C=CC=C1C LVWRXVYDWDCORS-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims description 2
- SWGJCIMEBVHMTA-UHFFFAOYSA-K trisodium;6-oxido-4-sulfo-5-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2-sulfonate Chemical compound [Na+].[Na+].[Na+].C1=CC=C2C(N=NC3=C4C(=CC(=CC4=CC=C3O)S([O-])(=O)=O)S([O-])(=O)=O)=CC=C(S([O-])(=O)=O)C2=C1 SWGJCIMEBVHMTA-UHFFFAOYSA-K 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- ADAUKUOAOMLVSN-UHFFFAOYSA-N gallocyanin Chemical class [Cl-].OC(=O)C1=CC(O)=C(O)C2=[O+]C3=CC(N(C)C)=CC=C3N=C21 ADAUKUOAOMLVSN-UHFFFAOYSA-N 0.000 description 3
- DLGIPTXPFZKKSB-UHFFFAOYSA-N N,N-diethyl-3-methyl-2-nitrosoaniline Chemical compound N(=O)C1=C(N(CC)CC)C=CC=C1C DLGIPTXPFZKKSB-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- WDCYWAQPCXBPJA-UHFFFAOYSA-N 1,3-dinitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC([N+]([O-])=O)=C1 WDCYWAQPCXBPJA-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 150000002832 nitroso derivatives Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines ätzbeständigen Farbstoffes der Gallocyaninreihe. Das Hauptpatent bezieht sich auf ein Verfahren zur Herstellung eines ätzbestän- digen Farbstoffes der Gallocyaninreihe, wel ches darin besteht, dass man den aus Gall- amid und Nitroso-diäthyl-meta-toluidin er hältlichen Farbstoff, dem in Form der Farb- base folgende Formel:
EMI0001.0012
mit dem Substituenten CH, an der mit X bezeichneten Stelle zukommt, mit Anilin kondensiert und die gebildete Anilinover- bindung mit Sulfierungsmitteln behandelt. Verglichen mit einem solchen Farbstoff, zu dessen Herstellung ein entsprechender, in der Stellung X jedoch keinen Substituenten tra gender Ausgangsstoff verwendet wird, er- weist er sich als viel widerstandsfähiger gegenüber Reduktionsmitteln. Er ist deshalb besonders geeignet für die Verwendung im Reduktions-Buntätzdruck.
Es wurde nun gefunden, dass ein ähn licher, ebenfalls ätzbeständiger Gallocyanin- farbstoff erhalten wird, wenn man im Ver fahren des. Hauptpatentes, an Stelle des ge nannten Farbstoffes aus Gallamid und Ni troso-diäthyl-meta-toluidin, den entsprechen den, aus Gallamid und Nitroso-dimethyl- meta-toluidin erhältlichen verwendet, die sen mit Anilin kondensiert und die gebildete Anilinoverbindung, mit Sulfierungsmitteln behandelt.
Das Verfahren wird erläutert durch folgendes Beispiel: 30 Teile Gallamid und 75 Teile salz saures Nitroso-dimethyl-meta-toluidin wer den in 500 Teilen Alkohol zum Sieden er hitzt, bis die Nitrosoverbindung verschwun den ist. Der nach dem Erkalten abgeschiedene Farbstoff ist in Wasser und Alkohol schwer löslich.
Zur Überführung in die Anilinoverbin- dung werden 60 Teile dieses Farbstoffes mit 120 Teilen Anilin, 15 Teilen Dinitrobenzol und 40 Teilen Alkohol am Rückfluss gekocht, bis eine Probe mit konzentrierter Schwefel säure keine blaue Färbung mehr zeigt.
Die nach dem Erkalten auskristallisierte Anilino- verbindung ist in verdünnten Säuren und Alkalien unlöslich, in den meisten organi schen Lösungsmitteln schwer löslich und gibt mit konzentrierter Schwefelsäure eine violett- stiehigrote Färbung. 7 Teile dieser Anilino- v erbindung werden in $0 Teilen 1075 Oleum sechs Stunden auf 90 C erhitzt.
Nach dem Verdünnen mit Eiswasser scheidet sich die Sulfosäure kristallinisch ab; sie ist in Was ser ziemlich leicht, in Alkalien mit blauer Farbe löslich. Für die Anwendung wird sie in ein Alkalisalz übergeführt.
Das erhaltene Produkt löst sich in kon zentrierter Schwefelsäure mit violettroter Farbe. In verdünnten Alkalien löst sich der Farbstoff mit blauer Farbe. Als freie Sulfosäure ist er in Wasser leicht löslich, schwerer löslich in verdünnten Säuren und kristallisiert daraus in schönen Prismen. Im Chromdruck auf Baumwolle liefert der Farbstoff rotstichigblaue Farbtöne. Dank seiner Beständigkeit gegen Reduktionsmittel eignet er sich für die Verwendung im Re- duktions-Buntätzdruck.
Process for the production of an etch-resistant dye of the gallocyanin series. The main patent relates to a process for the production of an etch-resistant dye of the gallocyanin series, which consists in that the dye, which is obtained from gallamide and nitroso-diethyl-metatoluidine, has the following formula in the form of the color base :
EMI0001.0012
with the substituent CH, at the point marked with X, condensed with aniline and treated the anilino compound formed with sulfonating agents. Compared with such a dye, for the production of which a corresponding starting material is used, but no substituents in the X position, it is found to be much more resistant to reducing agents. It is therefore particularly suitable for use in reduction color etching printing.
It has now been found that a similar Licher, also etch-resistant gallocyanine dye is obtained if one proceeds in the process of the main patent, instead of the dye mentioned from gallamide and nitroso-diethyl-meta-toluidine, the corresponding from Gallamide and nitroso-dimethyl-meta-toluidine available, which condensed with aniline and treated the anilino compound formed with sulfonating agents.
The process is illustrated by the following example: 30 parts of gallamide and 75 parts of acidic nitroso-dimethyl-meta-toluidine are heated to boiling in 500 parts of alcohol until the nitroso compound has disappeared. The dye deposited after cooling is sparingly soluble in water and alcohol.
For conversion into the anilino compound, 60 parts of this dye are refluxed with 120 parts of aniline, 15 parts of dinitrobenzene and 40 parts of alcohol until a sample with concentrated sulfuric acid no longer shows any blue color.
The anilino compound, which crystallizes out after cooling, is insoluble in dilute acids and alkalis, is sparingly soluble in most organic solvents and, with concentrated sulfuric acid, gives a purple-deep red color. 7 parts of this anilino compound are heated to 90 ° C. in 0 parts of 1075 oleum for six hours.
After dilution with ice water, the sulfonic acid separates out in crystalline form; it is fairly light in water and soluble in alkalis of blue color. For the application it is converted into an alkali salt.
The product obtained dissolves in concentrated sulfuric acid with a purple-red color. In dilute alkalis, the dye dissolves with a blue color. As a free sulfonic acid, it is easily soluble in water, less soluble in dilute acids and crystallizes from it in beautiful prisms. In chrome printing on cotton, the dye produces reddish blue shades. Thanks to its resistance to reducing agents, it is suitable for use in reduced color etch printing.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE148995X | 1927-11-26 | ||
| CH146864T | 1928-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH148995A true CH148995A (en) | 1931-08-15 |
Family
ID=25714951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH148995D CH148995A (en) | 1927-11-26 | 1928-11-22 | Process for the production of an etch-resistant dye of the gallocyanin series. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH148995A (en) |
-
1928
- 1928-11-22 CH CH148995D patent/CH148995A/en unknown
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