CH135481A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH135481A CH135481A CH135481DA CH135481A CH 135481 A CH135481 A CH 135481A CH 135481D A CH135481D A CH 135481DA CH 135481 A CH135481 A CH 135481A
- Authority
- CH
- Switzerland
- Prior art keywords
- methyl
- preparation
- chloro
- parts
- dissolves
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title claims description 4
- 239000000984 vat dye Substances 0.000 title description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- ZYECOAILUNWEAL-NUDFZHEQSA-N (4z)-4-[[2-methoxy-5-(phenylcarbamoyl)phenyl]hydrazinylidene]-n-(3-nitrophenyl)-3-oxonaphthalene-2-carboxamide Chemical compound COC1=CC=C(C(=O)NC=2C=CC=CC=2)C=C1N\N=C(C1=CC=CC=C1C=1)/C(=O)C=1C(=O)NC1=CC=CC([N+]([O-])=O)=C1 ZYECOAILUNWEAL-NUDFZHEQSA-N 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 235000000177 Indigofera tinctoria Nutrition 0.000 claims 1
- 229940097275 indigo Drugs 0.000 claims 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000000975 dye Substances 0.000 description 6
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229940040526 anhydrous sodium acetate Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Nüpenfarbstoffes. Es hat sich gezeigt, dass man zu Küpeü- farbstoffen von sehr guten Echtheitseigen schaften gelangt, wenn man die in 4-Stellung durch Methyl, in 5-Stellung durch Halogen substituierten Oxythionaphtene bezw. Oxythio- naphtenkarbonsäuren nach den üblichen Me thoden in die entsprechenden Thioindigofarb- stoffe überführt.
Ferner ist gefunden worden, dass die gleichen Farbstoffe aus dem 4.4'- Dimethylthioindigo durch Behandeln mit Halogenen oder halogenabgebenden Mitteln erhalten werden können. Es hat sich weiter gezeigt, dass auch die Kondensationsprodukte, die nach den üblichen Methoden aus den oben erwähnten neuen Oxythionaphtenen mit be liebig andern Oxythionaphtenen entstehen, ähnliche Echtheitseigenschaften aufweisen, wie die beispielsweise durch .Oxydation der oben erwähnten neuen Oxythionaphtenen er haltenen Farbstoffe.
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung des 4.4'- D imethyl-5 . 5'-dichloi#bi sthionaphteni iidigo, da dureh gekennzeichnet, dass man das 4-Methyl- 5-chlor-3-oxythionaphten durch Oxydation in den Farbstoff überführt. <I>Beispiel 1:</I> 37 Gewichtsteile 3-1Methyl-2-cyan-4-chlor- phenyl-l-thioglykolsäui-e werden in 1250 Teilen Wasser, 20 Teilen Natronlauge und 5 Teilen Schwefelnatrium in Lösung gebracht.
Nach erfolgter Lösung werden weitere 180 CTe- wichtsteile Natronlauge hinzugefügt und 2 Stunden bei 80-85 gerührt. Schon beim Erwärmen beginnt die Ausscheidung des Natriumsalzes der 4-Methyl-5-chlor-3-amino- 1-thionaphten-2-carbonsäure, die nach Zugabe von 100 Gewichtsteilen Kochsalz beim Er kalten fast vollständig ist.
Nach dem Ab saugen und Waschen mit Kochsalzlösung wird die feuchte Paste in der 20-fachen Menge Wasser unter Zugabe von etwas Natronlauge und Bisulfit in Lösung gebracht, filtriert, das .Filtrat mit verdünnter Schwefel säure angesäuert und auf dem Wasserbade solange erwärmt, bis die Oxythionaphten- bildung beendet ist. Das Oxythionaphten wird nach dem Erkalten abgesaugt und ausgewaschen.
Das Oxythionaphten wird mit wenig Sprit angeteigt, 500 Vol umteile 3 % ige Natronlauge hinzugesetzt, die Lösung auf 90-100o erhitzt und nun solange mit fein gemahlenem Schwefel versetzt, bis die Farb- stoffbildung beendet ist. Der 4.4'-Dimethyl- 5.5'-dichlorbisthionaphteriiridigo löst sich in Schwefelsäure mit grüner Farbe.
Er geht beim Verküpen mit gelber Farbe in Lösung und erzeugt auf Baumwolle klare rotviolette Farbtöne von aussergewöhnlich guten Echt heitseigenschaften.
Die 3-Methyl-2-cyan-4-chlorphenyl-l-thio- glykolsäure kann erhalten werden, indem man im 6-Chlor-3-amino-2-cyarr-l-methyl- benzol die Aminogruppe nach bekannten Ver fahren gegen die S . CH2-COOH-Gruppe aus tauscht.
Beispiel <I>2</I> 10 Gewichtsteile 3-Methyl-2-carboxyl-4- chlorphenyl-l-thioglycolsäure werden mit 40 Gewichtsteilen Essigsäureanhydrid und 2 Ge wichtsteilen wasserfreien Natriumacetat lang sam zum Sieden erhitzt. Man erhält kurze Zeit am Sieden, destilliert das Essigsäure- anhydrid-Eisessiggemisch ab; verseift das 4-Methyl-5-chlor-3-acetyloxythionaphten mit Natronlauge zum 4-Methyl-5-chlor-3-oxythio- naphten und oxydiert wie im Beispiel 1 angegeben.
Die 3-Methyl-2-carboxyl-4-chlorphenyl-l- thioglykolsäure kann erhalten werden, indem man die 6-Chlor-2-amino-l-methylberizol-3- sulfosäure über die Diazoverbindung in die 6-Chlor-2-cyan-l-methylbenzol-3-sulfosäure überführt, diese nach üblichen Verfahren unter Verseifung der Cyangruppe in die 3-Methyl-2- carboxyl-4-chlorphenyl-l-thioglykolsäure um wandelt.
Process for the preparation of a pebble dye. It has been shown that vat dyes with very good fastness properties are obtained if the oxythionaphthens which are substituted in the 4-position by methyl and in the 5-position by halogen are used respectively. Oxythionnaphthenecarboxylic acids converted into the corresponding thioindigo dyes using the usual methods.
It has also been found that the same dyes can be obtained from the 4,4'-dimethylthioindigo by treatment with halogens or halogen-donating agents. It has also been shown that the condensation products which are formed by the usual methods from the above-mentioned new oxythionaphthens with any other oxythionaphthens have similar fastness properties as the dyes obtained, for example, by .Oxydation of the above-mentioned new oxythionaphthens.
The present invention relates to a process for the preparation of 4,4′-D imethyl-5. 5'-dichloi # bi sthionaphteni iidigo, characterized by the fact that 4-methyl-5-chloro-3-oxythionaphthene is converted into the dye by oxidation. Example 1: 37 parts by weight of 3-1-methyl-2-cyano-4-chlorophenyl-1-thioglycolic acid are dissolved in 1250 parts of water, 20 parts of sodium hydroxide solution and 5 parts of sodium sulphide.
When the solution is complete, a further 180 parts by weight of sodium hydroxide solution are added and the mixture is stirred at 80-85 for 2 hours. The excretion of the sodium salt of 4-methyl-5-chloro-3-amino-1-thionaphthene-2-carboxylic acid begins as soon as it is heated, which is almost complete after adding 100 parts by weight of table salt when it is cold.
After sucking off and washing with saline solution, the moist paste is dissolved in 20 times the amount of water with the addition of a little sodium hydroxide solution and bisulfite, filtered, the filtrate acidified with dilute sulfuric acid and heated in the water bath until the oxythionaphtha - education is over. After cooling, the oxythionaphthene is sucked off and washed out.
The oxythionaphthene is made into a paste with a little gasoline, 500 parts by volume of 3% sodium hydroxide solution are added, the solution is heated to 90-100 ° and then finely ground sulfur is added until the dye formation has ended. The 4,4'-dimethyl-5,5'-dichlorobisthionaphteriiridigo dissolves in sulfuric acid with a green color.
When vat it dissolves with a yellow color and produces clear red-violet shades of exceptionally good fastness properties on cotton.
The 3-methyl-2-cyano-4-chlorophenyl-l-thioglycolic acid can be obtained by the amino group in the 6-chloro-3-amino-2-cyarr-l-methylbenzene by known methods against the S. CH2-COOH group exchanges.
Example <I> 2 </I> 10 parts by weight of 3-methyl-2-carboxyl-4-chlorophenyl-l-thioglycolic acid are slowly heated to the boil with 40 parts by weight of acetic anhydride and 2 parts by weight of anhydrous sodium acetate. The mixture is kept boiling for a short time and the acetic anhydride-glacial acetic acid mixture is distilled off; saponifies the 4-methyl-5-chloro-3-acetyloxythionaphthene with sodium hydroxide to give 4-methyl-5-chloro-3-oxythio- naphthene and oxidizes it as indicated in Example 1.
3-Methyl-2-carboxyl-4-chlorophenyl-1-thioglycolic acid can be obtained by converting 6-chloro-2-amino-1-methylberizole-3-sulfonic acid into 6-chloro-2-cyano via the diazo compound -l-methylbenzene-3-sulfonic acid, converts this into 3-methyl-2-carboxyl-4-chlorophenyl-l-thioglycolic acid by customary methods with saponification of the cyano group.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE135481X | 1927-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH135481A true CH135481A (en) | 1929-09-30 |
Family
ID=5665983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH135481D CH135481A (en) | 1927-04-04 | 1928-04-02 | Process for the preparation of a vat dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH135481A (en) |
-
1928
- 1928-04-02 CH CH135481D patent/CH135481A/en unknown
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