CH122936A - Process for the preparation of a vat dye of the thioindigo series. - Google Patents
Process for the preparation of a vat dye of the thioindigo series.Info
- Publication number
- CH122936A CH122936A CH122936DA CH122936A CH 122936 A CH122936 A CH 122936A CH 122936D A CH122936D A CH 122936DA CH 122936 A CH122936 A CH 122936A
- Authority
- CH
- Switzerland
- Prior art keywords
- vat dye
- preparation
- thioindigo series
- tetramethylthioindigo
- vat
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 239000000984 vat dye Substances 0.000 title claims description 4
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical class S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 title claims 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 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
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims 1
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 claims 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Coloring (AREA)
- Indole Compounds (AREA)
Description
Verfahren zur Herstellung eines Küpenfarbstoffes der Thloindigoreihe. Es wurde gefunden, dass man einen neuen Küpenfarbstoff erhält, wenn man den 4.4'-6. 6'-Tetramethylthioindigobromiert. Die Bromie- rung kann nach den üblichen Methoden durch geführt werden. Der so erhaltene 5. 5'-Dibrom- 4.4'-6. 6'-Tetramethylthioindigo stellt ein dun kelrot gefärbtes Pulver dar, das sich in konzentrierter Schwefelsäure mit grüner Farbe löst.
Mit Natronlauge und Hydrosulfit bildet er eine gelbe Küpe, aus der Baumwolle in licht-, koch- und chlorechten rotvioletten Tönen angefärbt wird.
Beispiel: 35 Gewichtsteile 4.4'-6.6'-Tetramethyl- thioindigo werden in 500 Gewichtsteilen Nitro- benzol suspendiert und nach Zusatz von 35 Gewichtsteilen Brom allmählich zum gelinden Sieden erhitzt. Nach beendigter Bromwasser- stoffentwicklung lässt man erkalten, filtriert und wäscht mit Alkohol.
Process for the production of a vat dye of the Thloindigo series. It has been found that a new vat dye is obtained if the 4.4'-6. 6'-tetramethylthioindigobrominated. The bromination can be carried out by the customary methods. The thus obtained 5. 5'-dibromo-4.4'-6. 6'-Tetramethylthioindigo is a dark red colored powder that dissolves in concentrated sulfuric acid with a green color.
With caustic soda and hydrosulfite, it forms a yellow vat from which cotton is dyed in light-, boil- and chlorine-proof red-violet tones.
Example: 35 parts by weight of 4,4'-6,6'-tetramethylthioindigo are suspended in 500 parts by weight of nitrobenzene and, after 35 parts by weight of bromine have been added, gradually heated to a gentle boil. When the evolution of hydrogen bromide has ended, the mixture is allowed to cool, filtered and washed with alcohol.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE122936X | 1925-07-02 | ||
| CH120808T | 1926-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH122936A true CH122936A (en) | 1927-10-17 |
Family
ID=25709584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH122936D CH122936A (en) | 1925-07-02 | 1926-06-25 | Process for the preparation of a vat dye of the thioindigo series. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH122936A (en) |
-
1926
- 1926-06-25 CH CH122936D patent/CH122936A/en unknown
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