CH192038A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH192038A CH192038A CH192038DA CH192038A CH 192038 A CH192038 A CH 192038A CH 192038D A CH192038D A CH 192038DA CH 192038 A CH192038 A CH 192038A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- production
- new azo
- new
- dye
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000000975 dye Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- WFZFMHDDZRBTFH-CZEFNJPISA-N 2-[(e)-2-(5-carbamimidoyl-1-benzofuran-2-yl)ethenyl]-1-benzofuran-5-carboximidamide;dihydrochloride Chemical compound Cl.Cl.NC(=N)C1=CC=C2OC(/C=C/C=3OC4=CC=C(C=C4C=3)C(=N)N)=CC2=C1 WFZFMHDDZRBTFH-CZEFNJPISA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 150000008049 diazo compounds Chemical class 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000000664 diazo group Chemical class [N-]=[N+]=[*] 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 235000010288 sodium nitrite Nutrition 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
- C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
- C09B29/28—Amino naphthols
- C09B29/30—Amino naphtholsulfonic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 190423. Verfahren zur Herstellung eines neuen Azofarbstoffes. Es wurde gefunden, dass man einen neuen Azofarbstoff erhält, wenn man die Diazover- bindung des 1-Aminobenzol-2-benzyl-4-äthyl- disulfons in saurer Lösung mit 1-Amino-5- oxynaphthalin-2-sulfonsäure vereinigt. Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit blauer Farbe löst und Wolle aus saurem Bade in echten blauen Tönen färbt.
Beispiel: 339 Teile 1-Aminobenzol-2-benzyl-4-äthyl- disulfon werden in verdünnter Essigsäure mit 250 Teilen Salzsäure vom spezifischen Ge wicht<B>1,16</B> verrührt und langsam mit einer konzentrierten Lösung von 69 Teilen Natrium nitrit versetzt. In diese durch Zusatz von Eis gekühlte Diazolösung lässt man eine neutra lisierte Lösung von 239 Teilen 1-Amino-5- oxynaphthalin-2-sulfonsäure zutropfen. Die Farbstoffbildung kann durch Zusatz neutra- lisierender Mittel, wie z.
B. Natriumacetat oder Natriumformiat, beschleunigt werden. Man kann die Umsetzung auch bei mässig erhöhter Temperatur durchführen. Der ent standene Farbstoff wird abfiltriert, durch Lösen in heissem Wasser und Zugabe eines Alkalis,Aussalzen undFiltrieren und Trocknen isoliert.
Additional patent to main patent No. 190423. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the diazo compound of 1-aminobenzene-2-benzyl-4-ethyl-disulfone is combined in acidic solution with 1-amino-5-oxynaphthalene-2-sulfonic acid. The new dye forms a dark powder that dissolves in water with a blue color and dyes wool from an acid bath in true blue tones.
Example: 339 parts of 1-aminobenzene-2-benzyl-4-ethyl-disulfone are stirred in dilute acetic acid with 250 parts of hydrochloric acid with a specific weight of 1.16 and slowly mixed with a concentrated solution of 69 parts of sodium nitrite added. A neutralized solution of 239 parts of 1-amino-5-oxynaphthalene-2-sulfonic acid is added dropwise to this diazo solution, cooled by the addition of ice. The dye formation can be achieved by adding neutralizing agents, such as
B. sodium acetate or sodium formate, are accelerated. The reaction can also be carried out at a moderately elevated temperature. The resulting dye is filtered off, isolated by dissolving in hot water and adding an alkali, salting out and filtering and drying.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH192038T | 1935-09-07 | ||
| CH190423T | 1935-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH192038A true CH192038A (en) | 1937-07-15 |
Family
ID=25721978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH192038D CH192038A (en) | 1935-09-07 | 1935-09-07 | Process for the production of a new azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH192038A (en) |
-
1935
- 1935-09-07 CH CH192038D patent/CH192038A/en unknown
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