CH241159A - Process for the preparation of a new monoazo dye. - Google Patents
Process for the preparation of a new monoazo dye.Info
- Publication number
- CH241159A CH241159A CH241159DA CH241159A CH 241159 A CH241159 A CH 241159A CH 241159D A CH241159D A CH 241159DA CH 241159 A CH241159 A CH 241159A
- Authority
- CH
- Switzerland
- Prior art keywords
- new
- solution
- yellow
- dye
- soluble
- 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
-
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/12—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the benzene series
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C1/00—Winding mechanical clocks electrically
- G04C1/02—Winding mechanical clocks electrically by electromagnets
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Description
Terfalir en zur Herstellung eines neuen Honoazofar bstoffes. Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines neuen was serlöslichen Monoazofarbstoffes, der sich zum Färben und Drucken von künstlicher Acetat seide, Wolle, Seide,
zinnbeschwerter Seide sowie Nylon eignet und durch Kuppeln von diazotiertem p-Aminopheny@-ss-oxyäthyläther mit p-Benzylphenol und Behandeln der so er haltenen Monoazoverbindung mit einem Sul- fierungsmittel erhalten wird.
Beispiel: 15,3, Teile p-Aminophenyl-ss-oxyäthyl- äther werden diazotiert und die Diazolösung einer Lösung von 18a4 Teilen p-Benzylphenol, gelöst in 4001 Teilen Wasser, enthaltend 4 Teile Natriumhydroxyd und 20 Teile was serfreies Natriumcarbonat, zugesetzt.
Hier- auf versetzt ,man während der Kupplung mit lün-wässrigem Natriumhydro- xyd, um das p-Benzylphenol weitgehend in Lösung zu halten. Nach beendeter Kupplung versetzt man mit 1-0n-Salzsäure" um die Honoazoverbindung auszufällen, worauf die selbe @abfiltriert, gründlich mit Wasser ge waschen und getrocknet wird.
Die getrocknete Monoazoverbindung wird gepulvert und Almähli.ch unter Rühren zu 200 Teilen 80- bis 90%iger Schwefelsäure zugesetzt. Es wird während 10-15 Stunden bei 15-30 C weitergerührt. Die erzielte Lö sung wird nun in ein gerührtes Gemisch von 200 Teilen Eis und 200 Teilen Wasser ge stürzt, worauf man so lange langsam 1,0n-Na- tronlauge, zugibt, bis das wässrige Medium schwach lackmusalkaliseh isst,
wobei man die erforderliche Menge Eis einträgt, um die Temperatur auf weniger als, 210 C zu halten. Der neue Farbstoff wird sehliesslich abfil- triert und getrocknet.
Der neue Farbstoff bildet ein gelbes Pul ver, welches in warmem Wasser unter Bildung einer gelben Lösung und in konzentrierter Schwefelsäure unter Bildung einer matt scharlachroten Lösung löslich ist. Er färbt Celluloseacetatseide und Nylonfasern in hell- gelben Tönen von guter Licht- und Nass- echtheit.
Terfalir en for the production of a new honoazo dye. The present invention relates to a process for the preparation of a new monoazo dye which is soluble in water, which is suitable for dyeing and printing artificial acetate, wool, silk,
Tin-weighted silk and nylon is suitable and is obtained by coupling diazotized p-aminopheny @ -ss-oxyethyl ether with p-benzylphenol and treating the monoazo compound thus obtained with a sulphonating agent.
Example: 15.3 parts of p-aminophenyl-ss-oxyäthyl ether are diazotized and the diazo solution of a solution of 18a4 parts of p-benzylphenol dissolved in 4001 parts of water containing 4 parts of sodium hydroxide and 20 parts of sodium carbonate, which is free from water, is added.
Then, during the coupling, aqueous sodium hydroxide is added to keep the p-benzylphenol largely in solution. After the coupling is complete, 1-0N hydrochloric acid is added to precipitate the honoazo compound, whereupon the same is filtered off, washed thoroughly with water and dried.
The dried monoazo compound is powdered and Almähli.ch is added to 200 parts of 80 to 90% sulfuric acid with stirring. Stirring is continued at 15-30 ° C. for 10-15 hours. The solution obtained is then plunged into a stirred mixture of 200 parts of ice and 200 parts of water, whereupon 1.0N sodium hydroxide solution is slowly added until the aqueous medium eats weakly litmus alkali,
adding enough ice to keep the temperature below 210C. The new dye is finally filtered off and dried.
The new dye forms a yellow powder which is soluble in warm water to form a yellow solution and in concentrated sulfuric acid to form a dull, scarlet solution. It dyes cellulose acetate silk and nylon fibers in light yellow tones with good light and wet fastness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB241159X | 1942-06-29 | ||
CH239212T | 1943-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH241159A true CH241159A (en) | 1946-02-15 |
Family
ID=25728383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH241159D CH241159A (en) | 1942-06-29 | 1943-06-25 | Process for the preparation of a new monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH241159A (en) |
-
1943
- 1943-06-25 CH CH241159D patent/CH241159A/en unknown
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