CH313298A - Process for the production of a brown leather dye - Google Patents
Process for the production of a brown leather dyeInfo
- Publication number
- CH313298A CH313298A CH313298DA CH313298A CH 313298 A CH313298 A CH 313298A CH 313298D A CH313298D A CH 313298DA CH 313298 A CH313298 A CH 313298A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- brown
- parts
- production
- benzene
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 239000000991 leather dye Substances 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000002253 acid Substances 0.000 claims description 8
- 239000000975 dye Substances 0.000 claims description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 3
- 239000010985 leather Substances 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
- 239000000843 powder Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- -1 2-amino diazo compound Chemical class 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 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
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000008049 diazo compounds Chemical class 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- NUIURNJTPRWVAP-UHFFFAOYSA-N 3,3'-Dimethylbenzidine Chemical group C1=C(N)C(C)=CC(C=2C=C(C)C(N)=CC=2)=C1 NUIURNJTPRWVAP-UHFFFAOYSA-N 0.000 description 1
- MTJGVAJYTOXFJH-UHFFFAOYSA-N 3-aminonaphthalene-1,5-disulfonic acid Chemical compound C1=CC=C(S(O)(=O)=O)C2=CC(N)=CC(S(O)(=O)=O)=C21 MTJGVAJYTOXFJH-UHFFFAOYSA-N 0.000 description 1
- 239000001049 brown dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/50—Tetrazo dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 312190 Verfahren zur Herstellung eines braunen Lederfarbstoffes Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines braunen Lederfarbstoffes. Das Verfahren ist dadurch geli:
ennzeichnet, dass man auf den Monoazo- farbstoff aus diazotierter 1-Amino-8-oxy-naph- thalin-3,6-disulfonsäure und 1,3-Dioxy-benzol einerseits ein Mol der Diazoverbindung der 2-Amino-naphthalin-4,8-disulfonsäure und an- derseits ein Mol des halbseitigen Kupplungs produktes des tetrazotierten 4,4'-Diamino-3,
3'- dimethyl-diphenyls und der 2-Oxy-benzol-l- carbonsäure in alkalischem Mittel einwirken lässt.
Der erhaltene neue Tetrakisazofarbstoff stellt ein dunkles Pulver dar und erzeugt auf ehromgegerbtem Leder volle braune Färbun gen von. hervorragender Säurebeständigkeit. Beispiel 31,9 Teile 1-Amino-8-oxy-naphthalin-3,6- clisulfonsäure werden in 100 Teilen Wasser mit 2,8 Teilen Ätznatron gelöst, mit 6,9 Teilen Natriumnitrit vermischt und bei 0-5 auf 30 Teile konz. Salzsäure laufen gelassen.
Die gelbe Diazosuspension wird nun zu einer ljösung von 10 'Teilen 1;3-Dioxy-benzol in 100 Teilen Wasser und 10 Teilen Ä tznatron fliessen gelassen. Die braune Monoa.zofarb- stofflösung wird mit weiteren 10 Teilen Ätz natron versetzt und die Diazoverbindung aus 30,3 Teilen 2-Amino-naphthalin-4,8-disulfon- säure dazugegeben.
Die dunkelbraune Disazo- farbstofflösung wird einige Stunden gerührt, Während dieser Zeit werden 21,2 Teile 4,4'- Diamino-3,3'-dimethyl-diphenyl tetrazotiert und in Gegenwart von 30 Teilen Natrium- carbonat mit 14,
3 Teilen 2-Oxy-benzol-l-car- bonsäure halbseitig gekuppelt. Diese soda- alkalische Suspension fliesst zu der oben be schriebenen Disazofarbstofflösung. Der dabei entstehende Tetrakisazofarbstoff wird mit 250 Teilen Kochsalz ausgesalzen, abfiltriert und getrocknet. Er ist ein dunkles Pulver, welches sich in Wasser mit dunkelbrauner und in konz. Schwefelsäure mit violetter Farbe löst. Er erzeugt auf chromgegerbtem Leder volle braune Färbungen von hervorragender Säure beständigkeit.
<B> Additional patent </B> to main patent No. 312190 Process for the production of a brown leather dye The present patent relates to a process for the production of a brown leather dye. The process is successful:
indicates that on the one hand one mole of the diazo compound of 2-amino-naphthalene-4, on the monoazo dye from diazotized 1-amino-8-oxynaphthalene-3,6-disulfonic acid and 1,3-dioxy-benzene, 8-disulfonic acid and on the other hand one mole of the half-sided coupling product of the tetrazotized 4,4'-diamino-3,
3'-dimethyl-diphenyls and 2-oxy-benzene-1-carboxylic acid can act in an alkaline medium.
The new tetrakisazo dye obtained is a dark powder and produces full brown dyeings of on aged leather. excellent acid resistance. Example 31.9 parts of 1-amino-8-oxy-naphthalene-3,6-clisulfonic acid are dissolved in 100 parts of water with 2.8 parts of caustic soda, mixed with 6.9 parts of sodium nitrite and concentrated at 0-5 to 30 parts. Run hydrochloric acid.
The yellow diazo suspension is then allowed to flow into a solution of 10 parts of 1; 3-dioxy-benzene in 100 parts of water and 10 parts of caustic soda. A further 10 parts of caustic soda are added to the brown monoazo dye solution and the diazo compound from 30.3 parts of 2-aminonaphthalene-4,8-disulphonic acid is added.
The dark brown disazo dye solution is stirred for a few hours. During this time, 21.2 parts of 4,4'-diamino-3,3'-dimethyl-diphenyl are tetrazotized and in the presence of 30 parts of sodium carbonate with 14,
3 parts of 2-oxy-benzene-1-carboxylic acid coupled on one side. This soda-alkaline suspension flows into the disazo dye solution described above. The resulting tetrakisazo dye is salted out with 250 parts of sodium chloride, filtered off and dried. He is a dark powder, which in water with dark brown and in conc. Dissolves sulfuric acid with a purple color. On chrome-tanned leather, it produces full brown dyes with excellent acid resistance.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH312190T | 1953-01-30 | ||
| CH313298T | 1953-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH313298A true CH313298A (en) | 1956-03-31 |
Family
ID=25735901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH313298D CH313298A (en) | 1953-01-30 | 1953-01-30 | Process for the production of a brown leather dye |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH313298A (en) |
-
1953
- 1953-01-30 CH CH313298D patent/CH313298A/en unknown
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