CH293619A - Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye. - Google Patents
Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye.Info
- Publication number
- CH293619A CH293619A CH293619DA CH293619A CH 293619 A CH293619 A CH 293619A CH 293619D A CH293619D A CH 293619DA CH 293619 A CH293619 A CH 293619A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid ester
- anthraquinone
- dye
- yellow
- leuco
- 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
- C09B9/00—Esters or ester-salts of leuco compounds of vat dyestuffs
- C09B9/02—Esters or ester-salts of leuco compounds of vat dyestuffs of anthracene dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 287872). Verfahren zur HersteHung eines Leukoschwefelsäureestersalzes eines Anthrachinonazofarbstoffes. Gegenstand vorliegender Erfindung ist ein Verfahren zur Herstellung eines neuen Leuko- sellweielsäureestersa17es des A-nthraehinonazo- farbstoffes der Formel
EMI0001.0009
welches dadurch gekennzeichnet ist,
dass man diazotiertes 1-Aminoanthraehinon mit 5-Aeeto- aeetylainino-6-1-nethyl-2- (2'-methyl) -phenv1-1,3- benzotriazol der Formel
EMI0001.0017
kuppelt und den entstandenen Azofarbstoff zur Leukoverbindung reduziert, diese durch Behandlung mit S03 oder<B>S03</B> abgebenden Mitteln verestert und den Ester in das Na- triumsalz überführt.
Die Überführung des Küpenfarbstoffes in den Iieukoschwefelsäureester geschieht in der Weise, dass man<B>x.</B> B. den Farbstoff dureh ein Reduktionsmittel, das wohl, die Chinon- gruppe, nicht aber die Azogruppe reduziert, in die Leakoverbindung verwandelt und diese mit, SO3 oder einer SO3 abgebenden Substanz, wie z. B. Chlorsulfonsäure, in Gegenwart einer tertiären Base, wie z.
B. Pvridin, und in Ge genwart eines Metalles, wie z. B, Cu oder Fe, verestert.
Der neue Leukosehweielsäureester zeieh- net sich durch eine gute Affinität zur vell-e- tabilischen Faser und durch sehr gute Echt- heiten aus.
<I>Beispiel:</I> Zu 210 Teilen einer Pyridinfraktion vom Siedepunkt<B>125</B> bis<B>1280</B> C lässt man 42 Teile Chlors-alfonsäure unter Kühlung einlaufen und trägt dann<B>28</B> Teile des Azofarbstoffes aus diazotiertem 1-Aminoanthraehinon und <B>5 -</B> Acetoacetylamino <B>- 6 -</B> methyl <B>-</B> 2<B>-</B> (2'-methyl) - phenyl-1,3-benzotriazol, vermischt mit<B>17</B> Tei len Eisenpulver, ein.
Man erwärmt das Ge misch auf 4011 C und gibt nach mehrstün digem Rühren das Reaktionsgemiseh in eine Lösung von<B>65</B> Teilen Natriumearbonat in <B>1000</B> Teilen Wasser. Aus der vom Pyridin befreiten und vom Eisenschlamm abfiltrierten Lösung salzt man den Ester mit Kochsalz aus.
Man erhält auf diese Weise ein Leukosehkeiel- säureestersalz, das in Wasser unter Bildung einer gelborangen Lösung löslieh ist und durch geeignete Oxydation einen gelben Kü- penfarbstoff liefert. Nach dem für diese Farbstoffklasse üblichen Entwieklungsverfah- ren wird auf der Faser ein neutrales Gelb mit sehr guten Eehtheitseigenschaften erhalten.
Additional patent to main patent No. 287872). Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye. The present invention relates to a process for the preparation of a new leukosellellar acid ester of the a-nthraehinonazo dye of the formula
EMI0001.0009
which is characterized by
that you diazotized 1-aminoanthraehinone with 5-aeeto-aeetylainino-6-1-ethyl-2- (2'-methyl) -phenv1-1,3-benzotriazole of the formula
EMI0001.0017
couples and reduces the resulting azo dye to the leuco compound, esterifies this by treatment with SO3 or SO3 releasing agents and converts the ester into the sodium salt.
The conversion of the vat dye into the lieukosulfuric acid ester takes place in such a way that, for example, the dye is converted into the leaky compound by a reducing agent that reduces the quinone group but not the azo group and this with, SO3 or a substance releasing SO3, such as. B. chlorosulfonic acid, in the presence of a tertiary base, such as.
B. Pvridin, and in Ge presence of a metal such. B, Cu or Fe, esterified.
The new leukose acid ester is characterized by a good affinity to the stable fiber and very good fastness properties.
<I> Example: </I> To 210 parts of a pyridine fraction with a boiling point of <B> 125 </B> to <B> 1280 </B> C, 42 parts of chlorosulfonic acid are run in with cooling and then <B> 28 </B> parts of the azo dye made from diazotized 1-aminoanthraehinone and <B> 5 - </B> acetoacetylamino <B> - 6 - </B> methyl <B> - </B> 2 <B> - </ B> (2'-methyl) - phenyl-1,3-benzotriazole, mixed with <B> 17 </B> parts of iron powder.
The mixture is heated to 4011 ° C. and, after stirring for several hours, the reaction mixture is added to a solution of 65 parts of sodium carbonate in 1000 parts of water. The ester is salted out with common salt from the solution which has been freed from pyridine and filtered off from the iron sludge.
In this way a leukose acid ester salt is obtained which is soluble in water with the formation of a yellow-orange solution and which, by suitable oxidation, gives a yellow vat dye. After the development process customary for this class of dyes, a neutral yellow with very good fastness properties is obtained on the fiber.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH293619T | 1950-07-21 | ||
CH287872T | 1950-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH293619A true CH293619A (en) | 1953-09-30 |
Family
ID=25732772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH293619D CH293619A (en) | 1950-07-21 | 1950-07-21 | Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH293619A (en) |
-
1950
- 1950-07-21 CH CH293619D patent/CH293619A/en unknown
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