CH121012A - Process for the preparation of a developer dye. - Google Patents
Process for the preparation of a developer dye.Info
- Publication number
- CH121012A CH121012A CH121012DA CH121012A CH 121012 A CH121012 A CH 121012A CH 121012D A CH121012D A CH 121012DA CH 121012 A CH121012 A CH 121012A
- Authority
- CH
- Switzerland
- Prior art keywords
- red
- pyrazolone
- phenyl
- preparation
- methyl
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Entwielderfarbstoffes. Es wurde gefunden, dass ein wertvoller Entwicklerfarbstoff erhalten wird, wenn man tetrazotiertes o-Tolidin in molekularem Ver hältnis mit 2'-1'Ilethyl-S'-amino-5-sulfo-l- phenyl <B>- 5 -</B> pyrazolon <B>- 3 -</B> karbonsäure zu einem Zwischenprodukt vereinigt und dasselbe in alkalischer Lösung mit 1-Phei)y1-3-rnethyl-5- pyrazolon weiterkuppelt. Der neue Farbstoff bildet ein rotbraunes Pulver,
das sich in Wasser mit roter, in konzentrierter Schwefel säure mit rotvioletter Farbe löst. Er färbt ungebeizte Baumwolle in blauroten Tönen, welche durch Diazotieren auf der Faser und nachfolgende Entwieklung mit Betanaphtol ohne wesentliche Nuancenänderung wasch echt fixiert werden.
<I>Beispiel:</I> Zu der Tetrazoditolyllösung aus 9,1,2 Tei len o-Tolidin lässt man bei<B>0-5 0 C</B> die Lö sung des Trinatriumsalzes von<B>31,3</B> Teilen 2'-Alethyl <B>-</B> 3'-amino <B>-</B> 5'- stilfo <B>- 1 -</B> phenyl <B>-</B> D' - pyrazolon <B>- 3 -</B> karbonsäure zufliessen.
Sobald unveränderte Tetrazoverbindung nicht mehr nachgewiesen werden kann, gibt man die Lösung von 20 Teilen kalzinierter Soda und hierauf die schwach natronalkalische Lösung von 17,4 Teilen 1-Phenyl-3-methyl-5-pyrazolon zu. Nach wenigen Stunden ist die Kombina tion beendigt; man wärmt auf<B>50 0</B> C an, neutralisiert die überschüssige Soda mit Salz säure und salzt den Farbstoff aus.
Process for the preparation of a developer dye. It has been found that a valuable developer dye is obtained when tetrazotized o-tolidine is used in a molecular ratio with 2'-1'ilethyl-S'-amino-5-sulfo-1-phenyl <B> -5- </ B > Pyrazolon <B> - 3 - </B> carboxylic acid combined to form an intermediate product and the same coupled further in alkaline solution with 1-Phei) y1-3-methyl-5-pyrazolone. The new dye forms a red-brown powder,
which dissolves in water with red, in concentrated sulfuric acid with red-violet color. It dyes unstained cotton in blue-red tones, which are fixed by diazotizing on the fiber and subsequent development with betanaphtol without any significant change in shade.
<I> Example: </I> The solution of the trisodium salt of <B> 31.3 is added to the tetrazoditolyl solution of 9.1.2 parts of o-tolidine at <B> 0-5 ° C. </B> </B> Share 2'-Alethyl <B> - </B> 3'-amino <B> - </B> 5'- stilfo <B> - 1 - </B> phenyl <B> - </ B> D '- pyrazolone <B> - 3 - </B> carbonic acid flow in.
As soon as unchanged tetrazo compound can no longer be detected, the solution of 20 parts of calcined soda and then the weakly alkaline sodium solution of 17.4 parts of 1-phenyl-3-methyl-5-pyrazolone are added. The combination is over after a few hours; it is warmed up to <B> 50 0 </B> C, the excess soda is neutralized with hydrochloric acid and the dye is salted out.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE121012X | 1925-03-28 | ||
CH119229T | 1925-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH121012A true CH121012A (en) | 1927-06-16 |
Family
ID=25709196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH121012D CH121012A (en) | 1925-03-28 | 1925-11-02 | Process for the preparation of a developer dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH121012A (en) |
-
1925
- 1925-11-02 CH CH121012D patent/CH121012A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH121012A (en) | Process for the preparation of a developer dye. | |
CH121013A (en) | Process for the preparation of a developer dye. | |
CH121010A (en) | Process for the preparation of a developer dye. | |
CH121011A (en) | Process for the preparation of a developer dye. | |
CH121972A (en) | Process for the preparation of a developer dye. | |
CH122910A (en) | Process for the preparation of a developer dye. | |
CH121973A (en) | Process for the preparation of a developer dye. | |
CH122909A (en) | Process for the preparation of a developer dye. | |
CH122906A (en) | Process for the preparation of a developer dye. | |
CH121005A (en) | Process for the preparation of a developer dye. | |
CH144483A (en) | Process for the preparation of a disazo dye. | |
CH229358A (en) | Process for the preparation of a trisazo dye. | |
CH121006A (en) | Process for the preparation of a developer dye. | |
CH229359A (en) | Process for the preparation of a trisazo dye. | |
CH122907A (en) | Process for the preparation of a developer dye. | |
CH121014A (en) | Process for the preparation of a developer dye. | |
CH122911A (en) | Process for the preparation of a developer dye. | |
CH160948A (en) | Process for the preparation of an azo dye. | |
CH120999A (en) | Process for the preparation of a developer dye. | |
CH122908A (en) | Process for the preparation of a developer dye. | |
CH212995A (en) | Process for the preparation of a hexakisazo dye. | |
CH144489A (en) | Process for the preparation of a disazo dye. | |
CH121009A (en) | Process for the preparation of a developer dye. | |
CH122916A (en) | Process for the preparation of a developer dye. | |
CH135390A (en) | Process for the production of a new azo dye. |