DE692976C - Process for the preparation of an azo dye - Google Patents

Process for the preparation of an azo dye

Info

Publication number
DE692976C
DE692976C DE1936I0056305 DEI0056305D DE692976C DE 692976 C DE692976 C DE 692976C DE 1936I0056305 DE1936I0056305 DE 1936I0056305 DE I0056305 D DEI0056305 D DE I0056305D DE 692976 C DE692976 C DE 692976C
Authority
DE
Germany
Prior art keywords
azo dye
preparation
dye
nitrobenzene
diamino
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE1936I0056305
Other languages
German (de)
Inventor
Dr Hans Krzikalla
Dr Walter Limbacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DE1936I0056305 priority Critical patent/DE692976C/en
Application granted granted Critical
Publication of DE692976C publication Critical patent/DE692976C/en
Expired legal-status Critical Current

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

.Verfahren zur Herstellung eines Azofarbstoffs Es wurde gefunden, daß, man einen wertvollen Azofarbstoff erhält, wenn man die Diazoverbindung- der i-Amino-2-anethoxyq.-nitrobenzol-5-sülfons.äure mit i, 3-Diamino-¢-nitrobenzol vereinigt. Der so -hergestellte Azofarbstoff zeichnet sich durch große Ausgiebigkeit und gutes Egalisiervermögen aus. Er färbt Wolle und Seide in lebhaft orangegelben Tönen von guten Echtheitseigenschaften. Vor dem bekannten Azofarbstoff ' aus diazotierter i-Amina-2-phenoxybenzol-5-stdfonsäure und i, 3-Diamino-q.-nitrobenzol zeichnet sich der neue Farbstoff durch bessere Löslichkeit in Wasser und durch bessere Lichtechtheit aus. Dem bekannten Farbstoff aus diazotiertem i-Amino-2-methoxy-5-nitrobenzgl und i, 3-Diamino-2-chlorbenzol-5-sulfonsäureistder neue Farbstoff in der Waschechtheit der Wollfärbung überlegen. Beispiel Man läßt eine aus 24,8 Teilen i-Amino-2-methOxy-q.-nitrobenzol-5-sulfonsäur.e hergestellte Diazolösung zu einer salzsauren Lösung von i6,8' Teilen i, 3-Diamino-q.-nitro-Benzol fließen und 'führt die Kupplung dumch Zusatz von Natriumacetat zu Ende. Der Farbstoff wird .mit Natritimchlorid ausgefällt, dann abgesaugt und 'getrocknet. Er färbt Wolle in orangegelben Tönen..Process for the preparation of an azo dye It has been found that, one obtains a valuable azo dye if one uses the diazo compound i-Amino-2-anethoxyq-nitrobenzene-5-sulphonic acid combined with i, 3-diamino- [nitrobenzene]. The azo dye produced in this way is characterized by its high yield and goodness Equalizing power. He dyes wool and silk in vivid orange-yellow tones of good fastness properties. Before the well-known azo dye 'from diazotized i-Amina-2-phenoxybenzene-5-stdfonic acid and i, 3-diamino-q.-nitrobenzene stand out the new dye through better solubility in water and better lightfastness the end. The known dye from diazotized i-amino-2-methoxy-5-nitrobenzo and i, 3-Diamino-2-chlorobenzene-5-sulfonic acid is the new dye in wash fastness superior to wool dye. Example One leaves a from 24.8 parts of i-amino-2-methOxy-q.-nitrobenzene-5-sulfonsäur.e produced diazo solution to a hydrochloric acid solution of i6.8 'parts of i, 3-diamino-q.-nitro-benzene flow and 'completes the coupling by adding sodium acetate. The dye is precipitated with sodium chloride, then suctioned off and dried. He dyes wool in orange-yellow tones.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Azofarbstofes, dadurch gekennzeichnet, daß man die Diazoverbindung der i-Amino-2-methoxy-¢-nitrobenzol-5-sulfonsäure mit q.-Nitro-i, 3-diaminobenzol kuppelt. PATENT CLAIM Process for the preparation of an azo dye, characterized in that the diazo compound of i-amino-2-methoxy- [-nitrobenzene-5-sulfonic acid] is coupled with q-nitro-1,3-diaminobenzene.
DE1936I0056305 1936-11-07 1936-11-07 Process for the preparation of an azo dye Expired DE692976C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1936I0056305 DE692976C (en) 1936-11-07 1936-11-07 Process for the preparation of an azo dye

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1936I0056305 DE692976C (en) 1936-11-07 1936-11-07 Process for the preparation of an azo dye

Publications (1)

Publication Number Publication Date
DE692976C true DE692976C (en) 1940-06-29

Family

ID=7194328

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1936I0056305 Expired DE692976C (en) 1936-11-07 1936-11-07 Process for the preparation of an azo dye

Country Status (1)

Country Link
DE (1) DE692976C (en)

Similar Documents

Publication Publication Date Title
DE692976C (en) Process for the preparation of an azo dye
DE728886C (en) Process for the preparation of copper complex compounds of substantive azo dyes
AT107575B (en) Process for the preparation of monoazo dyes.
CH189049A (en) Process for the preparation of a monoazo dye.
CH163545A (en) Process for the preparation of an azo dye.
CH209082A (en) Process for the preparation of an o-oxyazo dye.
CH194354A (en) Process for the preparation of a water-insoluble azo dye.
CH189041A (en) Process for the preparation of a monoazo dye.
CH251799A (en) Process for the preparation of an azo dye.
CH212569A (en) Process for the preparation of a water-insoluble azo dye.
CH215831A (en) Process for the preparation of an azo dye.
CH189048A (en) Process for the preparation of a monoazo dye.
CH174519A (en) Process for the production of a new azo dye.
CH188518A (en) Process for the preparation of an azo dye.
CH179678A (en) Process for the preparation of a monoazo dye.
CH212647A (en) Process for the preparation of an azo dye.
CH200999A (en) Process for the preparation of an azo dye.
CH210500A (en) Process for the preparation of a monoazo dye.
CH205803A (en) Process for the preparation of a monoazo dye.
CH175032A (en) Process for the preparation of an azo dye.
CH168623A (en) Process for the preparation of a new disazo dye.
CH194356A (en) Process for the preparation of a water-insoluble azo dye.
CH171233A (en) Process for the production of a new azo dye.
CH177829A (en) Process for the preparation of an o-oxyazo dye.
CH165410A (en) Process for the production of a new azo dye.