CH308468A - Process for the preparation of a metallizable disazo dye. - Google Patents
Process for the preparation of a metallizable disazo dye.Info
- Publication number
- CH308468A CH308468A CH308468DA CH308468A CH 308468 A CH308468 A CH 308468A CH 308468D A CH308468D A CH 308468DA CH 308468 A CH308468 A CH 308468A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- disazo dye
- dependent
- fumaric acid
- mol
- 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
- C09B45/24—Disazo or polyazo compounds
- C09B45/28—Disazo or polyazo compounds containing copper
-
- 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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
- C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
- C09B43/145—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with polycarboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 304388. Verfahren zur Herstellung eines metallisierbaren Disazofarbstoffes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines metalli- sierbaren Disazofarbstoffes, welches darin besteht,
dass man 2 Mol der durch Kuppeln von diazotierter 2-Amino-5-nitxobenzol-l- earbonsäure mit 2-Acetylamino-5-oxynaphtha- lin-7-sulfonsäure und nachfolgende Reduktion der Nitrogruppe zur Aminogruppe erhält lichen Aminomonoazoverbindung mit 1 Mol eines Fumarsäuredihalogenides umsetzt.
Im nachfolgenden Beispiel bedeuten die Teile Gewichtsteile. <I>Beispiel:</I> 43;7 Teile der durch Kuppeln von diazo- tierter 2-Amino-5-nitrobenzol-l-carbonsäure mit 2-Acetylamino-5-oxynaphthalin-7-sulfon- säure und anschliessende Überführung der Nitrogruppe in die Aminogruppe erhältlichen Aminomonoazoverbindung werden in Form des Dilithiumsalzes in 4000 Teilen Wasser gelöst.
Man versetzt,die Lösung innerhalb von etwa 7 Stunden gleichmässig mit einer Lösung von 9,2 Teilen Pumarsäuredichlorid .in 40 Teilen Chlorbenzol. Durch gelegentlichen Zu satz von wenig Lithiumearbonat wird der PH-Wert der Kondensationslösung stets zwi schen 5,5 - 7 gehalten. Nach erfolgter Kon densation erwärmt man die Masse auf 90 - 95 , salzt daraus den gebildeten Disazo- farbstoff aus, filtriert ihn ab und trocknet ihn.
Der neue, metallisierbare Disazofarbstoff löst sich in konzentrierter Schwefelsäure und in Wasser mit roter Farbe und färbt Baum wolle und Fasern aus regenerierter Cellulose in roten Tönen, welche, mit einem kupferab gebenden Mittel nachbehandelt, ausgezeichnet licht-, wasch- und schweissecht sind.
<B> Additional patent </B> to main patent no. 304388. Process for the production of a metallizable disazo dye. The subject of the present patent is a process for the production of a metallizable disazo dye, which consists in
that 2 mol of the aminomonoazo compound obtained by coupling diazotized 2-amino-5-nitxobenzene-1-carboxylic acid with 2-acetylamino-5-oxynaphthaline-7-sulfonic acid and subsequent reduction of the nitro group to the amino group are reacted with 1 mol of a fumaric acid dihalide .
In the following example, the parts are parts by weight. <I> Example: </I> 43; 7 parts of the product obtained by coupling diazo- tated 2-amino-5-nitrobenzene-1-carboxylic acid with 2-acetylamino-5-oxynaphthalene-7-sulfonic acid and then converting the nitro group Aminomonoazo compounds obtainable in the amino group are dissolved in 4000 parts of water in the form of the dilithium salt.
The solution is mixed uniformly over a period of about 7 hours with a solution of 9.2 parts of pumaric acid dichloride in 40 parts of chlorobenzene. By occasionally adding a little lithium carbonate, the pH value of the condensation solution is always kept between 5.5 - 7. After the condensation has taken place, the mass is heated to 90-95, the disazo dye formed is salted out, filtered off and dried.
The new, metallizable disazo dye dissolves in concentrated sulfuric acid and water with a red color and dyes cotton and fibers made of regenerated cellulose in red tones, which, after treatment with a copper-releasing agent, are extremely light, wash and perspiration-proof.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH308468T | 1952-04-30 | ||
CH304388T | 1956-05-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH308468A true CH308468A (en) | 1955-07-15 |
Family
ID=25734819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH308468D CH308468A (en) | 1952-04-30 | 1952-04-30 | Process for the preparation of a metallizable disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH308468A (en) |
-
1952
- 1952-04-30 CH CH308468D patent/CH308468A/en unknown
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