CH232043A - Process for the preparation of a chromium-containing disazo dye. - Google Patents
Process for the preparation of a chromium-containing disazo dye.Info
- Publication number
- CH232043A CH232043A CH232043DA CH232043A CH 232043 A CH232043 A CH 232043A CH 232043D A CH232043D A CH 232043DA CH 232043 A CH232043 A CH 232043A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- dye
- disazo dye
- amino
- containing disazo
- Prior art date
Links
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims description 10
- 229910052804 chromium Inorganic materials 0.000 title claims description 10
- 239000011651 chromium Substances 0.000 title claims description 10
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 4
- 239000000975 dye Substances 0.000 claims description 15
- 150000008049 diazo compounds Chemical class 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000010985 leather Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000000987 azo dye Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 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
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/02—Disazo dyes
- C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 230073. Verfahren zur Herstellung eines chromhaltigen Bisazofarbstoifes. Vorliegende Erfindung betrifft ein Ver fahren zur Herstellung eines chromhaltigen Disazofarbstoffes. Das Verfahren ist dadurch gekennzeichnet;
d.ass man 1 Mol diazotierter 1-Amino-2-oxynaphthalin-4-sulfonsäure mit 1 Mol 1,3-Dioxybenzo:l vereinigt, den so er- haIternen Monoazofarbstoff mit 1 Mol der Di- azoverbindung ges 1-Amino-2-oxy-5-methyl- benzols kuppelt und:
schliesslich den Disazo- farbstoff durch Behandeln mit chromabge benden Mitteln in den entsprechenden chrom haltigen Disa.zofarbstoff überführt.
Der neue Farbstoff stellt ein dunkles Pul ver ,dar, das sich in. Wasser mit rotstichig dunkelblauer Farbe löst und Leder in tief dunkelblauen bis blauschwarzen Tönen färbt.
<I>Beispiel:</I> Die Diazoverbindung aus 23,9 Gewichts teilen 1-Amino-2-oxynaphthalin-4-sulfon- säure wird mit 11 Gewichtsteilen 1,3-Dioxy- benzol kalt natronalkalisch zum Mono,azo- farbstoff vereinigt.
Dieser wird nach Isolie rung und Anrühren in Wasser wieder in Ge genwart von Natronlauge mit der Diazover- bindung aus 12,3 Gewichtsteilen 1'-Amino,2, oxy-5-methylbenzol .gekuppelt.
Zur Über führung in, die,doppelte Chromkomplexver- bindung wird -der abgeschiedene Disazofarb- stoff mit einer Chromsalzlösung, entspre- chend 16 Gewichtsteilen Cr203, so lange am Rückflusskühler schwach sauer gekocht, bis die Überführung in die doppelte Chromkom- plexverbindung vollendet ist.
Diese wird al kalisch heiss geklärt, sauer abgeschieden und annähernd neutral getrocknet.
Die Überführung in die Chromkomp#lex- verbindung kann in. bekannter Weise neutral, sauer oder aalkalisch, offen oder unter Druck vorgenommen werden.
Der Farbstoff färbt die verschiedenen Ledersorten in tief dunkelblauen bis blau- schwarzen Tönen an.
<B> Additional patent </B> to main patent no. 230073. Process for the production of a chromium-containing bisazo dye. The present invention relates to a method for producing a chromium-containing disazo dye. The method is characterized by;
d. that 1 mol of diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid is combined with 1 mol of 1,3-dioxybenzo: 1, the monoazo dye thus obtained is combined with 1 mol of the diazo compound total 1-amino-2- oxy-5-methylbenzenes couple and:
finally, the disazo dye is converted into the corresponding chromium-containing disazo dye by treatment with chromium-releasing agents.
The new dye is a dark powder that dissolves in water with a reddish, dark blue color and dyes leather in deep dark blue to blue-black tones.
<I> Example: </I> The diazo compound composed of 23.9 parts by weight of 1-amino-2-oxynaphthalene-4-sulfonic acid is combined with 11 parts by weight of 1,3-dioxybenzene in cold sodium-alkaline form to form the mono-azo dye .
After isolation and stirring in water, this is again coupled with the diazo compound of 12.3 parts by weight of 1'-amino, 2, oxy-5-methylbenzene in the presence of sodium hydroxide solution.
To convert into the double chromium complex compound, the separated disazo dye is boiled slightly acidic in a reflux condenser with a chromium salt solution, corresponding to 16 parts by weight of Cr203, until the conversion into the double chromium complex compound is complete.
This is clarified with alkaline hot water, separated in acidic form and dried to an almost neutral state.
The conversion into the chromium complex can be carried out in a known manner, neutral, acidic or alkaline, open or under pressure.
The dye stains the different types of leather in deep dark blue to blue-black tones.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE232043X | 1941-08-28 | ||
| CH230073T | 1942-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH232043A true CH232043A (en) | 1944-04-30 |
Family
ID=25727435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH232043D CH232043A (en) | 1941-08-28 | 1942-07-22 | Process for the preparation of a chromium-containing disazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH232043A (en) |
-
1942
- 1942-07-22 CH CH232043D patent/CH232043A/en unknown
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