CH259309A - Process for the preparation of a new monoazo dye. - Google Patents
Process for the preparation of a new monoazo dye.Info
- Publication number
- CH259309A CH259309A CH259309DA CH259309A CH 259309 A CH259309 A CH 259309A CH 259309D A CH259309D A CH 259309DA CH 259309 A CH259309 A CH 259309A
- Authority
- CH
- Switzerland
- Prior art keywords
- butyl
- diazotized
- new
- sulfurizing agent
- sulfuric acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
- C09B62/44—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring
- C09B62/62—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring the reactive group being an ethylenimino or N—acylated ethylenimino group or a —CO—NH—CH2—CH2—X group, wherein X is a halogen atom, a quaternary ammonium group or O—acyl and acyl is derived from an organic or inorganic acid, or a beta—substituted ethylamine group
- C09B62/66—Azo dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur HersteIlung eines neuen Monoazofarbstoffes. Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung eines neuen Monoazofarbstoffes:, welches darin besteht, dass diazotiertes p-Nitranilin, N-n-Butyl-ss- oxy-äthylanilin und ein Sulfurierungsmittel miteinander zur Urnw#etzung gebracht werden.
wobei man so verfahren. kann, dass diazotier- tes 1)-Nitraniliii mit N#ii-Butyl-N-fl-oxyäthyl- anilin gekuppelt und die Oxyäthylgruppe hierauf in die entsprechende Schwefelsäure- ester.gruppe übergeführt wird, oder dass N-n- Butyl-Ni-ss-oxväthylanilin zur Überführung der Oxyäthyl--ruppe in die entsprechende Sch,#vef-elsäuree-.-t,-r,(,rupl),
- mit einem Sul- furierungsmittel behandelt und das Reak tionsprodukt mit diazotiertem p-Nitranilin (rekuppelt wird.
ZD Die Umwandlung der Oxyäthylgruppe in die entsprechende Sehwefelsäureestergruppe kann beispielsweise durch Behandeln der Verbindung mit Sehwefelsäure oder mit Chlorsulfonsäure in einem inerten Lösungs mittel, z. B. Tetrachloräthan oder Ähtylen- dichlorid, erfolgen.
Der neue Farbstoff eignet sich besonders fru <B>,</B> t zum Färben von Zelluloseaee:tat-Kunst- seide aus verdünnten oder laii-flüssi,-en, el Färbebädern, wie sie beim Färben mit, der Haspel Verwendung finden.
Der so erhaltene neue Farbstoff stellt. ein rötlichbraunes Pulver dar, welches sich in Wasser unter Bildunc einer roten Lösuna tD LI und in konz. Schwefelsäure unter Bildung einer rötliehbraunen Lösun-- löst. Der Farb- n stoff färbt Zelluloseacetat-Kunstseide in roten Tönen von o-Uter Lichtechtheit.
<I>Beispiel:</I> <B>19,3</B> Teile N-n-Butyl-N-fl-oxyäthylanilin werden mit 12 Teilen Chlorsulfensäure in einer Athylendiehloridlösung behandelt. Das Äthylendiehlorid wird hierauf durch<B>Ab-</B> dampfen entfernt und der Rückstand in einer Lösung von 8.4 Teilen Natriumbiearbonat in 400 Teilen Wasser gelöst.<B>9-6</B> Teile Natrium- hicarbonat werden zugesetzt und die Lösung auf<B>5</B> bis<B>70 C</B> a-bgekühlt. Eine auf ähnliche W-eise gekühlte, Lösung von Diazoniumehlo- rid,
erhalten -,ins <B>13,8</B> Teilen p-Nitranilin, in ungefähr<B>700</B> Teilen Wasser, werden dann langsam. zugefügt. Sobald, die Kupplung be endet ist, wird der Niederschlag des neuen Farbstoff-es abfiltriert, mit. 5%igem wäss- ri,gem. Natriumehlorid gewaschen und bei<B>60</B> bis<B>650 C</B> getrocknet,
Process for the production of a new monoazo dye. The present invention relates to a process for the preparation of a new monoazo dye: which consists in bringing diazotized p-nitroaniline, N-n-butyl-ss-oxy-ethylaniline and a sulfurizing agent to wetting together.
whereby you proceed like this. can that diazotized 1) -nitraniliii coupled with N # ii-butyl-N-fl-oxyethyl aniline and the oxyethyl group is then converted into the corresponding sulfuric acid ester group, or that Nn-butyl-Ni-ss- oxväthylaniline to convert the oxyethyl group into the corresponding Sch, # vef-eläuree -.- t, -r, (, rupl),
- Treated with a sulphurating agent and the reaction product is recoupled with diazotized p-nitroaniline (.
ZD The conversion of the oxyethyl group into the corresponding sulfuric acid ester group can, for example, by treating the compound with sulfuric acid or with chlorosulfonic acid in an inert solvent, e.g. B. tetrachloroethane or ethylene dichloride.
The new dye is particularly suitable for dyeing cellulose: tat artificial silk from diluted or laii-liquid dye baths such as those used when dyeing with the reel.
The new dye thus obtained represents. a reddish-brown powder, which in water forms a red solution tD LI and in conc. Sulfuric acid dissolves with the formation of a reddish brown solution. The dye dyes cellulose acetate rayon in red shades of lightfastness.
<I> Example: </I> <B> 19.3 </B> parts of N-n-butyl-N-fl-oxyethylaniline are treated with 12 parts of chlorosulfenic acid in an ethylene dichloride solution. The ethylene dichloride is then removed by evaporation and the residue is dissolved in a solution of 8.4 parts of sodium bicarbonate in 400 parts of water. 9-6 parts of sodium bicarbonate are added and the Solution cooled to <B> 5 </B> to <B> 70 C </B> a-b. A similarly cooled solution of diazonium chloride,
get -, in <B> 13.8 </B> parts of p-nitroaniline, in about <B> 700 </B> parts of water, are then slowly. added. As soon as the coupling has ended, the precipitate of the new dye-it is filtered off with. 5% aqueous, acc. Sodium chloride washed and dried at <B> 60 </B> to <B> 650 C </B>,
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH259309T | 1945-04-16 | ||
CH249636T | 1945-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH259309A true CH259309A (en) | 1949-01-15 |
Family
ID=25729371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259309D CH259309A (en) | 1945-04-16 | 1945-04-16 | Process for the preparation of a new monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH259309A (en) |
-
1945
- 1945-04-16 CH CH259309D patent/CH259309A/en unknown
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