CH107132A - Process for the preparation of a substantive azo dye. - Google Patents
Process for the preparation of a substantive azo dye.Info
- Publication number
- CH107132A CH107132A CH107132DA CH107132A CH 107132 A CH107132 A CH 107132A CH 107132D A CH107132D A CH 107132DA CH 107132 A CH107132 A CH 107132A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- preparation
- dye
- naphthylamine
- 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
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/18—Trisazo or higher polyazo dyes
- C09B33/28—Tetrazo dyes of the type A->B->K<-C<-D
-
- 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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
- C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
- C09B43/14—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with phosgene or thiophosgene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 106778. Verfahren zur Herstellung eines substantiven Azofarbstoffes. Es wurde gefunden, dass man einen neuen substantiven Azofarbstoff erhält, wenn man auf 2 Mol. 1,
3'-Aminophenyl-5-pyrazolon-3- karbonsäure Phosgen und hierauf 1 Mol. der aus 4-Amino-3-toluol-azo-2'-toluol-4'- sulfosäure hergestellten Diazoverbindung und 1 Mol. des diazotierten Disazofarbstoffes aus diazotierter 2-Naphthylamin-4,8-disulfo- säure und a-Naphthylamin,
Weiterdiazotie- ren und Kuppeln mit Clevesch2r Säure ein wirken lässt. Der neue Farbstoff bildet ein dunkles Pulver und färbt Baumwolle in sehr lichtechten, braunen Tönen, die sich mit Hydrosulfit rein weiss ätzen lassen.
<I>Beispiel:</I> In die Lösung von 438 Teilen 1,3'-Amino- phenyl-5-pyrazolon-3-karbonsäure und 300 Teilen Soda in 3000 Teilen Wasser wird bei etwa 40 bis<B>50'</B> Phosgen eingeleitet, bis eine Probe sich nicht mehr diazotieren lässt.
In die so erhaltene Lösung lässt man eine Suspen sion der aus 305 Teilen 4-Amino-3-toluol-azo- 2'-toluol-4'-sulfosäure hergestellten Diazover- bindung und, nach erfolgter Bildung des Disazofarbstoffes, die Diazoverbindung, er- halten durch Diazotieren von 691 Teilen des Disazofarbstoffes aus diazotierter 2-Naph- thylamin-4,8-disulfosäure und a-Naphthyl- amin,
Weiterdiazotieren und Kuppeln mit Clevescher Säure zufliessen.
Additional patent to main patent no. 106778. Process for the production of a substantive azo dye. It has been found that a new substantive azo dye is obtained if one uses 2 mol. 1,
3'-aminophenyl-5-pyrazolone-3-carboxylic acid phosgene and then 1 mol. Of the diazo compound prepared from 4-amino-3-toluene-azo-2'-toluene-4'-sulfonic acid and 1 mol. Of the diazotized disazo dye from diazotized 2-naphthylamine-4,8-disulfonic acid and a-naphthylamine,
Further diazotization and doming with Clevesch2r acid can have an effect. The new dye forms a dark powder and dyes cotton in very lightfast, brown tones, which can be etched pure white with hydrosulfite.
<I> Example: </I> In the solution of 438 parts of 1,3'-aminophenyl-5-pyrazolone-3-carboxylic acid and 300 parts of soda in 3000 parts of water is about 40 to <B> 50 '< / B> Phosgene introduced until a sample can no longer be diazotized.
In the solution obtained in this way, a suspension of the diazo compound prepared from 305 parts of 4-amino-3-toluene-azo-2'-toluene-4'-sulfonic acid and, after the disazo dye has formed, the diazo compound, is allowed to hold by diazotizing 691 parts of the disazo dye from diazotized 2-naphthylamine-4,8-disulfonic acid and a-naphthylamine,
Continue diazotizing and adding Clevean acid to the domes.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH106778T | 1923-07-27 | ||
CH107132T | 1923-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH107132A true CH107132A (en) | 1924-10-01 |
Family
ID=31947293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH107132D CH107132A (en) | 1923-07-27 | 1924-06-25 | Process for the preparation of a substantive azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH107132A (en) |
-
1924
- 1924-06-25 CH CH107132D patent/CH107132A/en unknown
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