CH123736A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH123736A CH123736A CH123736DA CH123736A CH 123736 A CH123736 A CH 123736A CH 123736D A CH123736D A CH 123736DA CH 123736 A CH123736 A CH 123736A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- preparation
- dye
- cresidine
- nitroaniline
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title description 2
- DPJCXCZTLWNFOH-UHFFFAOYSA-N 2-nitroaniline Chemical compound NC1=CC=CC=C1[N+]([O-])=O DPJCXCZTLWNFOH-UHFFFAOYSA-N 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- WXWCDTXEKCVRRO-UHFFFAOYSA-N para-Cresidine Chemical compound COC1=CC=C(C)C=C1N WXWCDTXEKCVRRO-UHFFFAOYSA-N 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- -1 acetate silk Chemical class 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
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
-
- 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
- C09B29/0805—Amino benzenes free of acid groups
- C09B29/0807—Amino benzenes free of acid groups characterised by the amino group
- C09B29/0809—Amino benzenes free of acid groups characterised by the amino group substituted amino group
- C09B29/081—Amino benzenes free of acid groups characterised by the amino group substituted amino group unsubstituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino, aralkylamino or arylamino
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Es wurde gefunden, dass man einen neuen Azofarbstoff erhält, wenn man diazotiertes o-Nitranilin mit Kresidin (CHa : OCHa : NH2 1 :4: 3) kuppelt. Der Farbstoff bildet ein gelbes Pulver; er färbt Gebilde aus Zellu- loseestern und -äthern, wie zum Beispiel die Acetatseide, in echten, gelben Tönen, welche den überraschenden Vorzug haben, nicht phototrop zu sein.
<I>Beispiel</I> In die durch Diazotieren von 138 Teilen o-Nitranilin erhaltene Diazolösung wird unter Rühren eine wässerige Lösung des Chlor- hydrates aus 137 Teilen Kresidin (C13s OCHs : NHs :1: 4 : 3) eingetragen. Dieses Ge misch wird unter Kühlung tropfenweise mit einer wässerigen Lösung von 365 Teilen Na- triumacetat versetzt. Der gebildete Farbstoff fällt sofort aus.
Wenn keine Diazoverbindung mehr nachweisbar ist, wird mit Sodalösung neutral gestellt und filtriert.
Process for the preparation of an azo dye. It has been found that a new azo dye is obtained when diazotized o-nitroaniline is coupled with cresidine (CHa: OCHa: NH2 1: 4: 3). The dye forms a yellow powder; he colors structures made from cellulose esters and ethers, such as acetate silk, in genuine yellow tones, which have the surprising advantage of not being phototropic.
<I> Example </I> An aqueous solution of the chlorohydrate of 137 parts of cresidine (C13s OCHs: NHs: 1: 4: 3) is introduced into the diazo solution obtained by diazotizing 138 parts of o-nitroaniline. An aqueous solution of 365 parts of sodium acetate is added dropwise to this mixture while cooling. The dye formed precipitates immediately.
If no more diazo compound can be detected, it is made neutral with soda solution and filtered.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH123736T | 1926-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH123736A true CH123736A (en) | 1927-12-16 |
Family
ID=4382390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH123736D CH123736A (en) | 1926-10-02 | 1926-10-02 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH123736A (en) |
-
1926
- 1926-10-02 CH CH123736D patent/CH123736A/en unknown
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