CH123641A - Process for the production of a diazo salt preparation for dyeing and printing. - Google Patents
Process for the production of a diazo salt preparation for dyeing and printing.Info
- Publication number
- CH123641A CH123641A CH123641DA CH123641A CH 123641 A CH123641 A CH 123641A CH 123641D A CH123641D A CH 123641DA CH 123641 A CH123641 A CH 123641A
- Authority
- CH
- Switzerland
- Prior art keywords
- dyeing
- ended
- added
- reaction
- diazo salt
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Diazosalzpräparates für Färberei und Druckerei. Es wurde gefunden, dass man ein gut haltbares Diazosalzpräparat für Färberei und Druckerei erhält, wenn man die wie üblich hergestellte mineralsaure Diazosalz- lösung von p-Chlor-o-nitroanilin mit einem l.5-naphtalindisulfosauren Metallsalz um setzt.
Das so erhaltene neutrale 1. 5-Naphtalin- disulfonat des diazotierten Chlornitroanilins von z. B. W /o Gehalt an Chlornitroanilinbase bildet ein gelbes, gut haltbares, lösliches, un mittelbar zum Ausfärben grundierter Baum wolle geeignetes Diazosalzpräparat, das zweckmässig mit geeigneten, die Ausfärbun gen, die Löslichkeit und die Haltbarkeit günstig beeinflussenden Zusätzen und Fär- bereihilfsmitteln, wie zum Beispiel Alumi niumsulfat oder Alaun, arylsulfonsauren Me tallsalzen und dergleichen,
noch auf einen handelsüblichen Diazogehalt eingestellt wird. Beispiel Eine aus 173 Teilen 4-Chlor-2-nitro-l- anilin in üblicher Weise hergestellte konzen- trierte Lösung des Diazochlorids wird mit 190 Teilen 1.5-naphtalindisulfosaurem Na trium, Hol.-Gewicht 332, bis zur völligen Umsetzung verrührt; dann wird abfiltriert und das Diazosalz bei mässiger Temperatur getrocknet und unter Umständen durch Ver mischen mit geeigneten Färbereihilfsstoffen in handelsfertige Form gebracht.
Diese Zu sätze können auch dem noch feuchten D.iazo- salz zugemischt werden.
Process for the production of a diazo salt preparation for dyeing and printing. It has been found that a diazo salt preparation with good stability for dyeing and printing is obtained if the conventionally prepared mineral acid diazo salt solution of p-chloro-o-nitroaniline is reacted with a 1.5-naphthalene disulphonic acid metal salt.
The neutral 1. 5-naphthalene disulfonate of the diazotized chloronitroaniline of z. B. W / o content of chloronitroaniline base forms a yellow, long-lasting, soluble, directly suitable for coloring primed cotton diazo salt preparation, which is useful with additives and dyeing auxiliaries that have a beneficial effect on coloring, solubility and shelf life, such as For example aluminum sulfate or alum, aryl sulfonic acid metal salts and the like,
is still set to a commercially available Diazo content. EXAMPLE A concentrated solution of the diazo chloride prepared in the customary manner from 173 parts of 4-chloro-2-nitro-l-aniline is stirred with 190 parts of sodium 1,5-naphthalene-disulphonate, weight 332, until reaction is complete; it is then filtered off and the diazo salt is dried at moderate temperature and, under certain circumstances, brought into commercial form by mixing it with suitable dyeing auxiliaries.
These additives can also be added to the still moist D. azo salt.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE123641X | 1925-01-19 | ||
CH121789T | 1926-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH123641A true CH123641A (en) | 1927-12-01 |
Family
ID=25709758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH123641D CH123641A (en) | 1925-01-19 | 1926-01-18 | Process for the production of a diazo salt preparation for dyeing and printing. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH123641A (en) |
-
1926
- 1926-01-18 CH CH123641D patent/CH123641A/en unknown
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