CH259314A - Process for the preparation of a new monoazo dye. - Google Patents
Process for the preparation of a new monoazo dye.Info
- Publication number
- CH259314A CH259314A CH259314DA CH259314A CH 259314 A CH259314 A CH 259314A CH 259314D A CH259314D A CH 259314DA CH 259314 A CH259314 A CH 259314A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- oxyethyl
- sulfuric acid
- toluidine
- new
- 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 Herstellung eines neuen Monoazofarbstoffes. Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung eines neuen Monoazofarbstoffes, welches darin besteht, dass diazotiertes p-'2\itranilin, N-n-Butz-1-N-ss- oxyäthyl-m-toluidin und ein Sulfurierungs- mittel miteinander zur Umsetzung gebracht -erden, wobei man so verfahren kann,
dass diazotiertes p-Nitranilin mit N-n-Butyl-N-ss- oxyäthyl-m-tol'uidin gekuppelt und die Oxy- äthylgruppe hierauf in die entsprechende Schwefelsäureestergruppe übergeführt wird,
oder dass N-n-Butyl-N-ss-oxyäthyl-m-toluidin zur Überführung der Oxyäthylgruppe in die entsprechende Sehwefelsäureestergruppe mit einem Sulfurierungsmittel behandelt und das Reaktionsprodukt mit dia.zot.iertem p-Ni- tra.nilin gekuppelt wird.
Die Umwandlung der Oxyäthylgruppe in die entsprechende Schwefelsäureestergruppe kann beispielsweise durch Behandeln der Verbindung mit Schwefelsäure oder mit Chlorssulfonsäure in einem inerten Lösungs mittel, z. B. Tetrachlorätha.n oder Äthylen dichlorid, erfolgen.
Der neue Farbstoff eignet sich besonders gut zum Färben von Zel.luloseacetat--Kunst- seide aus verdünnten oder langflüssigen>; Färbebädern, wie sie beim Färben mit. der Haspel Verwendung finden.
Der so erhaltene neue Farbstoff stellt ein dunkelrotes Pulver dar, welches sich in N@Tas- ser unter Bildung einer bläuliehroten Lösung und in konz. Schwefelsäure unter Bildung einer gelblichbraunen Lösung löst. Der Parb- Stoff färbt 7,elluloseacetat-Kunsts,eid,e in bläu lichroten Tönen von guten Echtheitseigen schaften.
<I>Beispiel:</I> <B>20,7</B> Teile N -n-Butyl-N-ss-oxyä-thy l-m-to- luidin werden mit 12 Teilen Chlorsulfonsäure in einer Ähtylendichloridlösung bei 50 C behandelt. Hierauf wird das Lösungsmittel durch Abdampfen. entfernt und. der Rück stand in einer Lösung von 8,4 Teilen Na triumbicarbonat in 400 Teilen Wasser gelöst.
Anschliessend werden 26 Teile Natriumbicar- bonat zugesetzt und die Lösung auf 5 bis 7 C abgekühlt. Eine in ähnlicher Weise ge kühlte Lösung von Diazoniumchlorid, erhal ten aus 18,8 Teilen p-Nitranilin, inetwa. 700 Teilen Wa@.er, wird dann langsam zugesetzt. Sobald die Kupplung beendet ist, wird der Niederschlag des neuen Farbstoffes abfil- triert, mit einer 5 % igen,
wässrigen Natrium- chlorid,lösung gewaschen und bei 40 bis 50 C getrocknet.
Process for the preparation of a new monoazo dye. The present invention relates to a process for the preparation of a new monoazo dye which consists in reacting diazotized p-2 itraniline, Nn-Butz-1-N-s-oxyethyl-m-toluidine and a sulfurizing agent with one another -ground, whereby one can proceed in this way
that diazotized p-nitroaniline is coupled with N-n-butyl-N-ss- oxyethyl-m-tol'uidine and the oxyethyl group is then converted into the corresponding sulfuric acid ester group,
or that N-n-butyl-N-ss-oxyäthyl-m-toluidine is treated with a sulfurizing agent to convert the oxyethyl group into the corresponding sulfuric acid ester group and the reaction product is coupled with dia.zot.ierter p-nitra.niline.
The conversion of the oxyethyl group into the corresponding sulfuric acid ester group can medium, for example, by treating the compound with sulfuric acid or with chlorosulfonic acid in an inert solvent, eg. B. Tetrachlorätha.n or ethylene dichloride.
The new dye is particularly suitable for dyeing cellulose acetate - artificial silk made from diluted or long-flowing>; Dye baths, like those used when dyeing. the reel can be used.
The new dye thus obtained is a dark red powder, which is dissolved in N @ Tas- ser to form a bluish red solution and in conc. Sulfuric acid dissolves to form a yellowish brown solution. The Parb fabric dyes 7, ellulose acetate art, eid, e in bluish-red tones with good fastness properties.
<I> Example: </I> <B> 20.7 </B> parts of N -n-butyl-N-ss-oxyä-thy im-toluidine are treated with 12 parts of chlorosulfonic acid in an ethylene dichloride solution at 50.degree . The solvent is then removed by evaporation. removed and. the residue was dissolved in a solution of 8.4 parts of sodium bicarbonate in 400 parts of water.
Then 26 parts of sodium bicarbonate are added and the solution is cooled to 5 to 7 ° C. A similarly cooled solution of diazonium chloride obtained from 18.8 parts of p-nitroaniline in about. 700 parts of Wa @ .er is then slowly added. As soon as the coupling is complete, the precipitate of the new dye is filtered off, with a 5%,
aqueous sodium chloride, solution washed and dried at 40 to 50C.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH249636T | 1945-04-16 | ||
CH259314T | 1945-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH259314A true CH259314A (en) | 1949-01-15 |
Family
ID=25729376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259314D CH259314A (en) | 1945-04-16 | 1945-04-16 | Process for the preparation of a new monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH259314A (en) |
-
1945
- 1945-04-16 CH CH259314D patent/CH259314A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH259314A (en) | Process for the preparation of a new monoazo dye. | |
CH497512A (en) | Process for the preparation of water-soluble monoazo dyes | |
DE921767C (en) | Process for the production of new cobalt-containing azo dyes | |
CH259310A (en) | Process for the preparation of a new monoazo dye. | |
CH259315A (en) | Process for the preparation of a new monoazo dye. | |
CH259311A (en) | Process for the preparation of a new monoazo dye. | |
CH259309A (en) | Process for the preparation of a new monoazo dye. | |
CH259313A (en) | Process for the preparation of a new monoazo dye. | |
CH259312A (en) | Process for the preparation of a new monoazo dye. | |
AT212469B (en) | Process for the production of new, water-soluble dyes of the phthalocyanine series | |
CH303913A (en) | Process for the preparation of a vinyl sulfone dye. | |
AT278195B (en) | Process for the preparation of a new, water-soluble disazo dye | |
CH249636A (en) | Process for the preparation of a new monoazo dye. | |
CH259308A (en) | Process for the preparation of a new monoazo dye. | |
DE866075C (en) | Process for the preparation of dyes of the phthalocyanine series | |
AT220267B (en) | Process for the preparation of new monoazo dyes | |
DE860388C (en) | Process for the preparation of acidic disazo dyes | |
DE1793428A1 (en) | New thiosulfate compounds and processes for their preparation | |
DE2305616C3 (en) | Trisazo dyes, process for their preparation and their use | |
DE732303C (en) | Process for the preparation of water-soluble monoazo dyes | |
CH261271A (en) | Process for the preparation of a new monoazo dye. | |
DE1045575B (en) | Process for the preparation of monoazo dyes | |
CH226630A (en) | Process for the preparation of the leuco-sulfuric acid ester of a vat dye of the anthraquinone series. | |
CH261269A (en) | Process for the preparation of a new monoazo dye. | |
CH215831A (en) | Process for the preparation of an azo dye. |