PL8819B1 - A method of obtaining purple vat dyes. - Google Patents
A method of obtaining purple vat dyes. Download PDFInfo
- Publication number
- PL8819B1 PL8819B1 PL8819A PL881927A PL8819B1 PL 8819 B1 PL8819 B1 PL 8819B1 PL 8819 A PL8819 A PL 8819A PL 881927 A PL881927 A PL 881927A PL 8819 B1 PL8819 B1 PL 8819B1
- Authority
- PL
- Poland
- Prior art keywords
- vat dyes
- indigo
- indolthionaphthene
- obtaining purple
- obtaining
- Prior art date
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- 239000000984 vat dye Substances 0.000 title claims 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 125000001246 bromo group Chemical group Br* 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 8
- 229940097275 indigo Drugs 0.000 description 8
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 8
- 239000000975 dye Substances 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical group C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 125000000950 dibromo group Chemical group Br* 0.000 description 1
- -1 dibromomethyl Chemical class 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Bromujac znane z patentu niemieckie¬ go Nr 190292 2.2-indolotionaftenoindygo w kwasie siarkowym, w temperaturze sred¬ niej iloscia bromu, wystarczajaca na pod¬ stawienie 2 atomów bromu, otrzymuje sie dwubromo-2.2-indolotionaftenoindygo bar¬ wiace na kolor fioletowy tylko bardzo sza¬ ry i matowy.Obecnie wykryto, ze w obecnosci gru¬ py alkylowej w pierscieniu benzolowym ukladu indygowego, przy scisle takim sa¬ mym rodzaju bromowania, przy którem równiez nastepuje wlaczenie dwóch ato¬ mów bromu, otrzymuje sie barwniki dajar ce bardzo piekne, jasne i trwale odcienie fioletowe, niedajace sie wogóle porównac z odcieniami otrzymywanemi zapomoca dwubromo-2.2-indolotionaftenoindyga. Jest to nadspodziewane, gdyz niebromowane al- kylo - 2.2-indolotionaftenoindygo daje za¬ barwienie podobnie matowe i brzydkie, jak i niebromowane 2.2-indolotionaftenoin¬ dygo.Przyklad. Do 30 czesci wagowych 7- metylo-2.2-indolotionaftenoindyga, zarobio¬ nego 480 cz. wag. 96%-ego kwasu siarko¬ wego dodaje sie w temp. 10—15° 40 cz. bromu i miesza nastepnie w ciagu mniej wiecej 10 godzin. Poczem, mieszajac w dal¬ szym ciagu, podnosi sie temperature o 5° na godzine dopóty, dopóki temperatura nie osiagnie 40°. Mieszanine reakcyjna u- trzymuje sie w tej temperaturze jeszcze w ciagu godziny poczem wlewa do wody,miesza dokladnie, odsacza, przemywa i su¬ szy. Wydajnosc wynosi okolo 45 cz. wag. barwnika suchego, który wedlug analizy jest dwubromopochodna, W scisle podobny sposób mozna otrzy¬ mac dwubromo-6-metylo-i dwubromo-5- metylo-2.2-indolotionaftenoindygo.Wszystkie te dwubromometylo-2.2-in- dolotionaftenoindyga daja piekne, ja¬ sne odcienie fioletowe w przeciwienstwie do odcieni szarych, matowych dwubromo- 2.2-indolotionaftenoindyga. PL PLBy brominating 2.2-indolthionaphthene indigo in sulfuric acid, known from the German patent No. 190292, at an average amount of bromine, sufficient for the substitution of 2 bromine atoms, dibromo-2.2-indolthionaphthene indigo is obtained, only very gray, At present, it has been found that in the presence of an alkyl group in the benzole ring of the indigo system, with exactly the same type of bromination, which also involves the inclusion of two bromine atoms, dyes are obtained that give very beautiful, bright and permanent shades of violet, impossible to compare at all with the shades obtained with the use of dibromo-2.2-indolthionaftenindigo This is surprising, since unbrominated alkyl-2,2-indolthionaphthene indigo produces dyes similarly dull and ugly as unbrominated 2,2-indolthionaphthene indigo. To 30 parts by weight of the 7-methyl-2.2-indolthionaphthene indigo, prepared with 480 parts of wt. 96% sulfuric acid is added at 10-15 ° 40 parts. bromine and stirred for approximately 10 hours. Then, while stirring, the temperature is raised by 5 ° per hour until the temperature reaches 40 °. The reaction mixture is kept at this temperature for another hour, then poured into water, stirred thoroughly, drained, washed and dried. The yield is about 45 parts. wt. of a dry dye, which according to the analysis is a dibromomethyl derivative. In a strictly similar way, it is possible to obtain dibromomethyl-6-methyl-and dibromo-5-methyl-2.2-indolthionaphthene indigo. violet in contrast to the shades of gray, matte dibromo 2.2-indolthionaphthene indigo. PL PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL8819B1 true PL8819B1 (en) | 1928-05-31 |
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