CH138208A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH138208A CH138208A CH138208DA CH138208A CH 138208 A CH138208 A CH 138208A CH 138208D A CH138208D A CH 138208DA CH 138208 A CH138208 A CH 138208A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- dye
- mol
- amino
- ester
- 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
- 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
- C09B43/16—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents linking amino-azo or cyanuric acid residues
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 13"0220. Verfahren zur Herstellung eines neuen Azofarbstoffes. Fwurde gefunden, dass man einen neuen Azofarbstoff erhält, wenn man 1 Mol. ('y anurchlorid, 1 Mol. 1,8-Amino- naplithol-4,6-disulfosäure,
1 Mol. Dehyclro- tliiotoluidinsulfnsäure und 1 Mol. des diazo- tierten Azofarbstoffes,. der selbst.
durch Ver einigen eines dia.zotierten Esters der 1,8- Aminonaphthal-3,6-disulfosäure mit 1-A2e- thyl-3-amino-4-methoxybenzol erhalten wird, derart aufeinander einwirken lässt,
dass die Amino@naphtholdisulfosäure und die De- hydrotliiotoluidinsulfosä.ure durch den Cya- nurkern verbunden werden und der diazo- tierte Azofa.rbstoff in der 7-Stellung des aminonaphtholrestes kuppelt, und den ge bildeten Disa.zofarbstoff zwecks Abspaltung des estera.rtig gebundenen Säurerestes mit verseifend wirkenden Mitteln behandelt.
Der neue Farbstoff bildet ein dunkles Pulver. Er löst sich in Wasser mit blauer Farbe auf und erzeugt auf Baumwolle klare giiinblaue Töne von guter Licbtechtheit. <I>Beispiel:</I> 62,1 Gewichtsteile des Monoazofarb- stoffes aus dia.zotiertem 4-ToluoIsulfosäiire- ester der 1,8-Aminonaphthol-3,6-disulfosäur( und 1-Methyl-3-amino-4-methoxybenzol wer den bei 0 mit 1000 Gewichtsteilen Wasser und 13 Gewichtsteilen Natronlauge (30 % ) gelöst, mit einer Lösung von 6,
9 Gewichts teilen Natriumnitrit: ,gemisleh@ und mit 43 Gewichtsteilen Salzsäure (ä0 %) versetzt. Die Diazoverbindung wird hierauf zu einer sodaalkalischen Lösung von 75 Gewichts teilen des sekundär2n Kondensationsproduk tes aus 1 Mol. Cyanurchlorid, 1 Mol. 1,8- Aminonaphthol-4,6-disulfnsäure und 1 Mol. D.ehydrothiotoluidinsulfosäure laufen gelas sen.
Der gebildete Farbstoff wird mit Koch salz gefällt, filtriert. in 1000 Gewichtsteilen Wasser gelöst, mit 70 Gewichtsteilen Na tronlauge versetzt und eine Stunde auf 75 erhitzt. Durch Neutralisieren mit Salzsäure und Versetzen mit Kochsalz kann der Farb stoff abgeschieden werden.
Additional patent to main patent no. 13 "0220. Process for the preparation of a new azo dye. It has been found that a new azo dye is obtained if 1 mol. ('Y anuric chloride, 1 mol. 1,8-amino-naplithol-4,6 -disulfonic acid,
1 mol. Dehyclrotliiotoluidinsulfnäure and 1 mol. Of the diazotized azo dye ,. the self.
is obtained by combining a dia.zotierten ester of 1,8-aminonaphthal-3,6-disulfonic acid with 1-A2ethyl-3-amino-4-methoxybenzene, so that they act on one another,
that the amino @ naphtholdisulfonic acid and the dehydrotliiotoluidinsulfosä.ure are connected by the cyano nucleus and the diazo-tated azo-dye couples in the 7-position of the aminonaphthol residue, and the formed disa.zo dye for the purpose of splitting off the estera-tightly bound Acid residues treated with saponifying agents.
The new dye forms a dark powder. It dissolves in water with a blue color and produces clear, gold-blue tones of good lightfastness on cotton. <I> Example: </I> 62.1 parts by weight of the monoazo dye from doped 4-toluene-sulfonic acid ester of 1,8-aminonaphthol-3,6-disulfonic acid (and 1-methyl-3-amino-4- methoxybenzene who dissolved the at 0 with 1000 parts by weight of water and 13 parts by weight of sodium hydroxide solution (30%), with a solution of 6,
9 parts by weight of sodium nitrite:, gemisleh @ and admixed with 43 parts by weight of hydrochloric acid (0%). The diazo compound is then allowed to run into a soda-alkaline solution of 75 parts by weight of the secondary condensation product of 1 mole of cyanuric chloride, 1 mole of 1,8-aminonaphthol-4,6-disulfonic acid and 1 mole of dehydrothiotoluidinsulfonic acid.
The dye formed is precipitated with sodium chloride and filtered. dissolved in 1000 parts by weight of water, treated with 70 parts by weight of sodium hydroxide solution and heated to 75 for one hour. The dye can be separated out by neutralizing with hydrochloric acid and adding sodium chloride.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH135220T | 1927-10-22 | ||
CH138208T | 1927-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH138208A true CH138208A (en) | 1930-02-15 |
Family
ID=25712473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH138208D CH138208A (en) | 1927-10-22 | 1927-10-22 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH138208A (en) |
-
1927
- 1927-10-22 CH CH138208D patent/CH138208A/en unknown
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