CH122260A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH122260A
CH122260A CH122260DA CH122260A CH 122260 A CH122260 A CH 122260A CH 122260D A CH122260D A CH 122260DA CH 122260 A CH122260 A CH 122260A
Authority
CH
Switzerland
Prior art keywords
preparation
monoazo dye
sulfonic acid
dye
nitro
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH122260A publication Critical patent/CH122260A/en

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

Description

  

  Verfahren zur Darstellung eines     Honoazofarbstoffes.       Es wurde gefunden, dass .man zu einem  neuen Farbstoff mit sehr wertvollen Echt  heitseigenschaften dadurch gelangt, dass man  die     Diazoverbindung    der     5-Nitro-2-amino-          benzyl-co-sulfosäure    mit     2-Methylamino-          naphtalin-7-sulfosäure    kuppelt.  



  <I>Beispiel:</I>  249 Gewichtsteile     5-nitro-2-aminobenzyl-          co-sulfosaures    Ammonium werden     diazotiert;     man gibt die     Diazoverbindung    zu einer wäs  serigen Lösung von 237 Gewichtsteilen     2-          14Zethylaminonaphtalin-7-sulfosäure.    Der in  üblicher Weise aufgearbeitete, schön in Na  deln kristallisierende Farbstoff zieht auf    Wolle in sehr klaren, egalen und lichtechten,       rotstichig    violetten Tönen.



  Process for the preparation of a honoazo dye. It has been found that a new dye with very valuable authenticity properties can be obtained by coupling the diazo compound of 5-nitro-2-aminobenzyl-co-sulfonic acid with 2-methylamino-naphthalene-7-sulfonic acid.



  <I> Example: </I> 249 parts by weight of 5-nitro-2-aminobenzyl-co-sulfonic acid ammonium are diazotized; the diazo compound is added to an aqueous solution of 237 parts by weight of 2- 14Zethylaminonaphthalene-7-sulfonic acid. The dye, which has been worked up in the usual way and which crystallizes in needles, draws on wool in very clear, level and lightfast, reddish purple tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Mono azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung _ der 5-Nitro-2- a.minobenzyl-co-sulfosäure mit 2-Methyl- aminonaphtalin-7-sulfosäure kuppelt. Der so erhältliche Farbstoff kristallisiert in Nadeln und zieht auf Wolle in sehr klaren, egalen, lichtechten, rotstichig violetten Tönen. Claim: Process for the preparation of a mono azo dye, characterized in that the diazo compound _ of 5-nitro-2- a.minobenzyl-co-sulfonic acid is coupled with 2-methyl aminonaphthalene-7-sulfonic acid. The dye that can be obtained in this way crystallizes in needles and is applied to wool in very clear, level, lightfast, reddish purple tones.
CH122260D 1925-02-19 1926-02-10 Process for the preparation of a monoazo dye. CH122260A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE122260X 1925-02-19
CH121565T 1926-02-10

Publications (1)

Publication Number Publication Date
CH122260A true CH122260A (en) 1927-09-01

Family

ID=25709712

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122260D CH122260A (en) 1925-02-19 1926-02-10 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH122260A (en)

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