CH134946A - Process for the preparation of 4,6-dimethyl-5-chloro-4'-methyl-5'.6'-dichlorothioindigo. - Google Patents
Process for the preparation of 4,6-dimethyl-5-chloro-4'-methyl-5'.6'-dichlorothioindigo.Info
- Publication number
- CH134946A CH134946A CH134946DA CH134946A CH 134946 A CH134946 A CH 134946A CH 134946D A CH134946D A CH 134946DA CH 134946 A CH134946 A CH 134946A
- Authority
- CH
- Switzerland
- Prior art keywords
- chloro
- dimethyl
- methyl
- preparation
- dichlorothioindigo
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung des 4. 6-Dimethyl-5-chlor-4'-methyl-5'. 6'-dichlorthioindigos. Es wurde gefunden, dass durch Konden sation von Oxythionaphtenen folgender all gemeiner Formel
EMI0001.0004
worin X ein Alkyl, das andere X ein Halogen bedeutet, mit Komponenten der allgemeinen Formel
EMI0001.0006
worin Y eine auswechselbare Gruppe, zum Beispiel Sauerstoff,- 2 Halogene, einen Anil- rest bedeutet und V, Z, W Atome oder Reste bedeuten, von denen zwei benachbarte Glieder o-ständige Kohlenstoffatome eines aromatischen Restes sind,
während das dritte C, S oder NH bedeuten kann, Farbstoffe ent stehen, die sich durch sehr gute Licht- und Bäuchechtheit auszeichnen.
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung des 4. 6- Dimethyl-5-chlor-4'-methyl-5' . 6'- dichlorthio- indigos, welches dadurch gekennzeichnet ist, dass man 4,6-Dimethyl-5-chlor-3-oxythio- naphten mit einem 4-Methyl-5.6-dichlor-3- oaythionaphten, das in 2-Stellung einen reak tionsfähigen Substituenten aufweist, kon densiert.
Beispiel: 36 Gewichtsteile 2.3-Diketodihydro-4- methyl-5 . 6-dichlor-2-(p - dimethylamino) - anil von der Formel
EMI0002.0001
werden mit 21 Gewichtsteilen 4,6-Dimethyl- 5-chlor-3-oxythionaphten in 600 Gewichts teilen Eisessig so lange zum Sieden erhitzt, bis die Farbstoffbildung beendet ist. Nach dem Erkalten saugt man ab und wäscht neutral. Der Farbstoff bildet ein rotviolettes Pulver, das sich in heisser konzentrierter Schwefelsäure mit grüner Farbe löst.
Er geht beim Verküpen mit goldgelber Farbe in Lösung und erzeugt auf Baumwolle rotviolette Töne von besonders guten Echtheitseigen- scbaften.
Process for the preparation of the 4th 6-dimethyl-5-chloro-4'-methyl-5 '. 6'-dichlorthioindigos. It was found that by condensation of Oxythionaphtenen the following general formula
EMI0001.0004
wherein X is an alkyl, the other X is a halogen, with components of the general formula
EMI0001.0006
where Y is an exchangeable group, for example oxygen, - 2 halogens, an anil radical and V, Z, W mean atoms or radicals, of which two adjacent members are o-carbon atoms of an aromatic radical,
while the third can mean C, S or NH, dyes are created that are characterized by very good lightfastness and tummy fastness.
The present invention relates to a process for the preparation of the 4th 6- dimethyl-5-chloro-4'-methyl-5 '. 6'-dichlorothio indigos, which is characterized in that 4,6-dimethyl-5-chloro-3-oxythio- naphthene is used with a 4-methyl-5,6-dichloro-3-oaythionaphten which reacts in the 2-position has capable substituents condenses.
Example: 36 parts by weight of 2,3-diketodihydro-4-methyl-5. 6-dichloro-2- (p - dimethylamino) - anil of the formula
EMI0002.0001
are heated to boiling with 21 parts by weight of 4,6-dimethyl-5-chloro-3-oxythionaphten in 600 parts by weight of glacial acetic acid until the dye formation has ended. After cooling, it is suctioned off and washed neutral. The dye forms a red-violet powder that dissolves in hot concentrated sulfuric acid with a green color.
When vat it goes into solution with a golden yellow color and produces red-violet tones with particularly good fastness properties on cotton.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE134946X | 1926-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH134946A true CH134946A (en) | 1929-08-31 |
Family
ID=5665744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH134946D CH134946A (en) | 1926-05-29 | 1927-05-23 | Process for the preparation of 4,6-dimethyl-5-chloro-4'-methyl-5'.6'-dichlorothioindigo. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH134946A (en) |
-
1927
- 1927-05-23 CH CH134946D patent/CH134946A/en unknown
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