CH172605A - Process for the preparation of a chromium-containing azo dye. - Google Patents
Process for the preparation of a chromium-containing azo dye.Info
- Publication number
- CH172605A CH172605A CH172605DA CH172605A CH 172605 A CH172605 A CH 172605A CH 172605D A CH172605D A CH 172605DA CH 172605 A CH172605 A CH 172605A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- azo dye
- amino
- oxynaphthalene
- phenol
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 169699. Verfahren zur Herstellung eines chromhaltigen Azofarbstofes. Es wurde gefunden, dass durch Einwir kung chromabgebender Mittel auf ein Ge misch aus dem Azofarbstoff aus diazotierter 1-Amino-2-oxynaphthalin-4-sulfonsäure und 2-Oxynaphthalin mit den Azofarbstoffen aus dianotiertem 4-Chlor-2-amino-l-phenol und 1.3-Dioxybenzol,
sowie aus dianotierter 4-Nitro-?-amino-l-phenol-6-sulfonsäure und 2-Oxynaphthalin ein chromhaltiger Azo- farbstoff hergestellt werden kann, wenn als chromabgebendes Mittel solche Mengen Alkalichromitlösungen verwendet werden, die auf die drei chromierbaren Gruppen der Azofarbstoffe mindestens drei Atome Chrom enthalten.
Der erhaltene chromhaltige Farbstoff stellt ein schwarzes Pulver dar, das sich in Wasser. 10%iger Sodalösung, sowie -in 10%iger Natronlauge mit schwärzlich violet ter und in konzentrierter Schwefelsäure mit violettschwarzer Farbe löst. Er färbt Wolle aus organisehsaurem-schwefelsaurem Bade in rötlichen Marineblautönen von vorzüglicher Echtheit.
<I>Beispiel:</I> 10,4 Teile des Azofarbstoffes aus diano tierter 1-Amino-2-oxynaphthalin-4-sulfon- säure und 2-Oxynaphthalin, sowie 3,3 Teile des Azofarbstoffes aus dianotiertem 4-Chlor- 2-amino-l-phenol und 1 .
3-Diogybenzol, fer ner 5,2 Teile des Azofarbstoffes aus diazo- nierter 4-Nitro-2-amino-l-phenol-6-sulfon- säure und 2-Oxynaphthalin werden in eine frisch bereitete Chromitlösung eingetragen, die durch Verrühren von 54,7 Teilen einer 8 % igen Chromoxydhydratpaste, entsprechend 1,37 Teilen Cr=03, und 32,2 Teilen Ätzkali bei 60 bis<B>70'</B> erhalten wurde.
Man erwärmt das Reaktionsgemisch unter Rühren 14 Stun den auf 74 bis 78 , verdünnt dann mit 300 Teilen heissem Wasser, filtriert von eventuell vorhandenen ungelösten Bestandteilen ab und neutralisiert das Filtrat mit verdünnter Mine- ralsäure. Der chromhaltige Farbstoff wird durch Beigabe von Kochsalz abgeschieden.
Additional patent to main patent no. 169699. Process for the production of a chromium-containing azo dye. It has been found that by acting chromium-donating agents on a mixture of the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene with the azo dyes from dianotized 4-chloro-2-amino-1-phenol and 1,3-dioxybenzene,
and a chromium-containing azo dye can be produced from dianotized 4-nitro -? - amino-l-phenol-6-sulfonic acid and 2-oxynaphthalene, if such amounts of alkali chromite solutions are used as the chromium-releasing agent that correspond to the three chromable groups of the azo dyes at least contain three atoms of chromium.
The chromium-containing dye obtained is a black powder that dissolves in water. 10% soda solution, as well as 10% sodium hydroxide solution with blackish violet ter and in concentrated sulfuric acid with violet-black color. It dyes wool from organic acid-sulfuric acid bath in reddish navy blue tones of excellent authenticity.
<I> Example: </I> 10.4 parts of the azo dye from dianotated 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene, and 3.3 parts of the azo dye from dianotated 4-chloro-2 -amino-l-phenol and 1.
3-Diogybenzene, and also 5.2 parts of the azo dye from diazo- nated 4-nitro-2-amino-1-phenol-6-sulfonic acid and 2-oxynaphthalene are introduced into a freshly prepared chromite solution, which by stirring 54 , 7 parts of an 8% chromium oxide hydrate paste, corresponding to 1.37 parts of Cr = 03, and 32.2 parts of caustic potash at 60 to <B> 70 '</B> was obtained.
The reaction mixture is heated to 74 to 78 hours with stirring for 14 hours, then diluted with 300 parts of hot water, any undissolved constituents present are filtered off and the filtrate is neutralized with dilute mineral acid. The chromium-containing dye is deposited by adding common salt.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH169699T | 1933-04-21 | ||
CH172605T | 1933-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH172605A true CH172605A (en) | 1934-10-15 |
Family
ID=25718787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH172605D CH172605A (en) | 1933-04-21 | 1933-04-21 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH172605A (en) |
-
1933
- 1933-04-21 CH CH172605D patent/CH172605A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH172605A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172603A (en) | Process for the preparation of a chromium-containing azo dye. | |
DE557197C (en) | Process for the production of metal-containing azo dyes | |
AT138381B (en) | Process for the production of chromium-containing dyes. | |
CH172606A (en) | Process for the preparation of a chromium-containing azo dye. | |
DE565824C (en) | Process for the production of chromium-containing azo dyes | |
DE519910C (en) | Process for the production of chromium-containing azo dyes | |
CH172604A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172608A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172607A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172593A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172601A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH119901A (en) | Process for the production of a new dye. | |
CH169697A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172591A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172594A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172597A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH170333A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172588A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172599A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH170323A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172596A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH166497A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH145851A (en) | Process for the production of a metal-containing dye. | |
CH170325A (en) | Process for the preparation of a chromium-containing azo dye. |