CH104930A - Process for the production of a new indigoid dye. - Google Patents
Process for the production of a new indigoid dye.Info
- Publication number
- CH104930A CH104930A CH104930DA CH104930A CH 104930 A CH104930 A CH 104930A CH 104930D A CH104930D A CH 104930DA CH 104930 A CH104930 A CH 104930A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- production
- dye
- new
- indigoid dye
- Prior art date
Links
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- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen indigoiden Farbstoffes.. Es wurde gefunden, dass man einen Kü- penfarbstoff herstellen kann, wenn man das 1.. 2-Thionnaphthis.atin, welches :
durch Kon densieren von 1-Thionaphthol mit Oxalyl- chloarid erhalten werden kann, mit der Oxy- thion.aphthenkarbonsäure kondensiert und das so erhaltene Produkt bromiert. Der so erhal tene Farbstoff stellt ein dunkelrotes Pulver dar, das sich in Schwefelsäure mit intensiv grüner Farbe löst; er gibt mit Hydrosulfit uni < Natronlauge eine goldgelbe Xiipe, ans welcher Baumwolle in schönen Bordeaux Tönen gefärbt wird, die beim Seifen reiner und sehr echt werden.
Beispiel: 21l# Teile 1 . 2-Thionaplitliisatin und 194 \feile Oxythionaphthenk.arbonsäure werden in .t000 Teilen Alkohol suspendiert und nach Zugabe von 5 Teilen Soda zum Sieden er hitzt. Nach kurzem Kochen ist die Konden sation beendet. Der in sehr guter Ausbeute abgeschiedene Farbstoff wird filtriert, ge- waschen und getrocknet. Er stellt ein braun rotes Pulver dar, d:as sich in Schwefelsäure mit hellgrüner Farbe löst.
Der Farbstoff färbt .aus rötlichgoldgelber Küpe Baumwolle in bordeauxroten Tönen an. 346 Teile des obigen Farbstoffes werden zu 8000 Teilen Nitrobenzol ,gegeben und mit 480 Teilen Brom vermischt. Im Verlauf eines Tages wird die Temperatur allmählich bis <B>180'</B> C gesteigert, wobei eine kräftige Ent wicklung von Bromwasserstoff zu beobachten ist. Beim Erkalten scheidet sich das neue Produkt in braunen, glänzenden Kristallen ab.
Process for the production of a new indigoid dye .. It has been found that a vat dye can be produced if the 1 .. 2-thionnaphthis.atin, which:
can be obtained by condensing 1-thionaphthol with oxalyl chloaride, condensed with the oxythionaphthenecarboxylic acid and the product thus obtained is brominated. The dye obtained in this way is a dark red powder that dissolves in sulfuric acid with an intensely green color; With hydrosulphite and sodium hydroxide solution he gives a golden yellow color, on which cotton is dyed in beautiful bordeaux tones which become purer and very real when soapy.
Example: 21l # part 1. 2-Thionaplitliisatin and 194 \ feile Oxythionaphthenk.arbonsäure are suspended in .t000 parts of alcohol and after adding 5 parts of soda it is heated to the boil. After a short boil, condensation is over. The dyestuff deposited in very good yield is filtered, washed and dried. It is a brown-red powder that dissolves in sulfuric acid with a light green color.
The dye stains .from reddish-gold-yellow pot cotton in burgundy shades. 346 parts of the above dye are added to 8000 parts of nitrobenzene and mixed with 480 parts of bromine. Over the course of a day, the temperature is gradually increased to <B> 180 '</B> C, whereby a strong development of hydrogen bromide can be observed. When it cools, the new product separates out in brown, shiny crystals.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH100705T | 1922-11-18 | ||
CH104930T | 1923-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH104930A true CH104930A (en) | 1924-05-16 |
Family
ID=25705827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH104930D CH104930A (en) | 1922-11-18 | 1923-03-29 | Process for the production of a new indigoid dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH104930A (en) |
-
1923
- 1923-03-29 CH CH104930D patent/CH104930A/en unknown
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