CH235459A - Process for the preparation of a water-soluble monoazo dye. - Google Patents
Process for the preparation of a water-soluble monoazo dye.Info
- Publication number
- CH235459A CH235459A CH235459DA CH235459A CH 235459 A CH235459 A CH 235459A CH 235459D A CH235459D A CH 235459DA CH 235459 A CH235459 A CH 235459A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- preparation
- monoazo dye
- soluble monoazo
- diazotized
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines wasserlöslichen Honoazofarbstofes. Nach dem im Hauptpatent beschriebenen Verfahren. erhält man einen Leder in gelb braunen Tönen einheitlich .durchfärbenden Farbstoff von guter Licht-, Säure- und Wasserechtheit, wenn man 1-Amino=2'-eblor- 4-nitrobenzol=6-sulfosäure diazotiert und die Diazoverbindung mit Phenylaminodi (äthan- sulfonsäure) der Formel
EMI0001.0011
kuppelt.
Wie nun weiter gefunden wurde, erhält man einen Farbstoff von ähnlichen Eigen i schaften, wenn man 1-Amino-2-ch@or=6-.nitro- benzol-4-s.ulfosäure diazotiert und die Di- azoverbindung mit 3-Methylphenylaminodi (äthansulfonsäure) der Formel
EMI0001.0024
kuppelt.
<I>Beispiel:</I> 27,5 Teile 1-amino-2-@chlor-6-nitrGben7,ol- 4-sulfonsaures Natrium werden diazotiert und mit einer wässrigen, essigsauren Lösung des Natriums altes der 3.-Methylphenyl- aminodi (äthansulfoneäure) gekuppelt. Der Farbstoff färbt Leder in braunroten Tönen wasserecht durch.
Process for the preparation of a water-soluble honoazo dye. According to the procedure described in the main patent. you get a leather in yellow-brown shades uniformly. Through-coloring dye of good light, acid and water fastness, if 1-amino = 2'-eblor-4-nitrobenzene = 6-sulfonic acid is diazotized and the diazo compound with phenylamino di (ethane sulfonic acid ) of the formula
EMI0001.0011
clutch.
As has now been found further, a dye with similar properties is obtained if 1-amino-2-ch@or=6-.nitrobenzene-4-s.ulfonic acid is diazotized and the diazotized with 3-methylphenylaminodi (ethanesulfonic acid) of the formula
EMI0001.0024
clutch.
<I> Example: </I> 27.5 parts of 1-amino-2- @ chloro-6-nitrGben7, ol- 4-sulfonic acid sodium are diazotized and mixed with an aqueous, acetic acid solution of the sodium old of the 3rd methylphenyl aminodi (ethanesulfonic acid) coupled. The dye dyes leather in brown-red tones water-fast.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE235459X | 1939-08-24 | ||
CH232888T | 1942-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH235459A true CH235459A (en) | 1944-11-30 |
Family
ID=25727773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH235459D CH235459A (en) | 1939-08-24 | 1942-12-11 | Process for the preparation of a water-soluble monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH235459A (en) |
-
1942
- 1942-12-11 CH CH235459D patent/CH235459A/en unknown
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