CH278474A - Process for the preparation of a cobalt-containing disazo dye. - Google Patents
Process for the preparation of a cobalt-containing disazo dye.Info
- Publication number
- CH278474A CH278474A CH278474DA CH278474A CH 278474 A CH278474 A CH 278474A CH 278474D A CH278474D A CH 278474DA CH 278474 A CH278474 A CH 278474A
- Authority
- CH
- Switzerland
- Prior art keywords
- cobalt
- dye
- disazo dye
- oxynaphthalene
- amino
- Prior art date
Links
- 229910017052 cobalt Inorganic materials 0.000 title claims description 6
- 239000010941 cobalt Substances 0.000 title claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims description 6
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 239000000975 dye Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- -1 aminoazo Chemical group 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000008049 diazo compounds Chemical class 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/24—Disazo or polyazo compounds
- C09B45/30—Disazo or polyazo compounds containing cobalt
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 274242. Verfahren zur Herstellung eines kobalthaltigen Disazofarbstoffes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Farb stoffes, das dadureh gekennzeiehnet ist, dass man die Diazoverbindung aus 1 Mol 2-Amino- 1-oxybenzol-4-sulfonsäure mit 1 Mo1 1-Amino- 8-oxynaphthalin-3,6-disulfonsäure kuppelt, den erhaltenen Aminoazofarbstoff diazotiert,
mit 1 Mol. 2-Oxynaphthalin-6-sulfon.säure zum Disazofarbstoff der Zusammensetzung
EMI0001.0017
vereinigt und diesen mit Kobalt abgebenden Mitteln behandelt.
lm naelifolgenden Beispiel sind die Teile G ewiehtsteile.
Beispiel: 18,9 Teile 2-Amino-l-oxybenzol-4-sulfon- säure werden mit verdünnter Salzsäure und 6,9 Teilen Natriumnitrit diazotiert und mit.
einer eiskalten, stark sodaalkalisehen Lösung von 31,9 Teilen 1-Amino-8-oxynaphthalin-3,6- disulfonsäure vereinigt. Naeh beendeter Kupp lung wird der entstandene Aminoazofarbstoff isoliert, zur Weiterdiazotierung in Wasser ge löst, finit 6,9 Teilen Natrittmnitrit versetzt und dieses Gemiseh langsam zu einer Misehung aus verdünnter Salzsäure Lind Eis gegossen.
Hier auf wird mit. 22,4 Teilen 2-Oxy-naphthalin-6- sulfonsäure in Gegenwart von Soda gekup- pelt. Der auf übliehe Weise isolierte Disazo- farbstoff wird mehrere Stunden in Gegen wart von Natriuinaeetat in einer wässrigen Lösung von 30 Teilen Kobaltsulfat auf 90 bis 95 C ei-wärmt. Der neue Farbstoff enthält komplexgebundenes Kobalt und färbt Leder in grauen Tönen von ausgezeiehneter Lieht- eehtheit.
<B> Additional patent </B> to main patent no. 274242. Process for the production of a cobalt-containing disazo dye. The subject of the present patent is a process for the production of a dye which is marked dadureh that the diazo compound from 1 mol of 2-amino-1-oxybenzene-4-sulfonic acid with 1 mol of 1-amino-8-oxynaphthalene-3,6 -disulfonic acid couples, diazotizes the aminoazo dye obtained,
with 1 mole of 2-oxynaphthalene-6-sulfonic acid to form the disazo dye of the composition
EMI0001.0017
united and treated this with cobalt releasing agents.
In the example below, the parts are weight parts.
Example: 18.9 parts of 2-amino-1-oxybenzene-4-sulfonic acid are diazotized with dilute hydrochloric acid and 6.9 parts of sodium nitrite and mixed with.
an ice-cold, strongly alkaline soda solution of 31.9 parts of 1-amino-8-oxynaphthalene-3,6-disulfonic acid combined. After coupling is complete, the aminoazo dye formed is isolated, dissolved in water for further diazotization, 6.9 parts of sodium mnitrite are added and this mixture is slowly poured into a mixture of dilute hydrochloric acid and ice.
Here on is with. 22.4 parts of 2-oxynaphthalene-6-sulfonic acid coupled in the presence of soda. The disazo dye isolated in the customary manner is heated to 90 to 95 ° C. in an aqueous solution of 30 parts of cobalt sulfate for several hours in the presence of sodium acetate. The new dye contains complex-bound cobalt and dyes leather in gray tones with excellent lightness.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH274242T | 1949-04-14 | ||
| CH278474T | 1949-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH278474A true CH278474A (en) | 1951-10-15 |
Family
ID=25731538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH278474D CH278474A (en) | 1949-04-14 | 1949-04-14 | Process for the preparation of a cobalt-containing disazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH278474A (en) |
-
1949
- 1949-04-14 CH CH278474D patent/CH278474A/en unknown
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