CH182278A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH182278A CH182278A CH182278DA CH182278A CH 182278 A CH182278 A CH 182278A CH 182278D A CH182278D A CH 182278DA CH 182278 A CH182278 A CH 182278A
- Authority
- CH
- Switzerland
- Prior art keywords
- blue
- dye
- preparation
- red
- parts
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
- C09B29/0805—Amino benzenes free of acid groups
- C09B29/0807—Amino benzenes free of acid groups characterised by the amino group
- C09B29/0809—Amino benzenes free of acid groups characterised by the amino group substituted amino group
- C09B29/0811—Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino
- C09B29/0813—Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino substituted by OH, O-C(=X)-R, O-C(=X)-X-R, O-R (X being O,S,NR; R being hydrocarbonyl)
-
- 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
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr.<B>177581.</B> Verfahren zur Darstellung eines Azofarbstoffes. Das vorliegende Verfahren betrifft die Darstellung eines blauen Acetatseidenfarb- stoffes und ist dadurch gekennzeichnet, dass man diazotiertes 3;6-Dichlor-2,4-dinitranilin mit 1-Methyl-4-methogy-3-(äthyl-ss,y-diogy- propyl)-anilin kuppelt.
<I>Beispiel:</I> Man löst 25,2 Teile 3,6-Dichlor-2,4-di- nitra,nilin in 125 Teilen Schwefelsäuremono- hydrat von<B>50'</B> und versetzt die Lösung langsam mit 6,9 Teilen scharf getrocknetem Nitrit zwischen 50 bis<B>60'.</B> Nach kurzer Zeit wird die Diazolösung auf 30 abgekühlt und unverdünnt allmählich in eine eiskalt gehaltene Lösung von 23,9 Teilen 1-Methyl- 4-methoxy-3-(äthyl-ss,y-dioxypropyl)-anilin in 500 Teilen Wasser und 13 Teilen 30%iger Salzsäure, welche vor der Kupplung mit 80 Teilen Natriumacetat versetzt wurde, ein laufen gelassen;
durch gleichzeitige Zugabe von Natronlauge sorgt man dafür, dass das Kupplungsgut nicht mineralsauer wird. Der von der Mutterlauge befreite Farbstoff wird in Benzol aufgenommen; die filtrierte ben- zolische Lösung wird konzentriert, der Farb stoff mit Petroläther gefällt und von wenig rotfärbenden Beimengungen getrennt; zur vollständigen Reinigung wird er noch aus wenig Benzol oder Alkohol kristallisiert.
Er stellt ein dunkelbraunes Pulver dar, das sich in Alkohol und Aceton -blauviolett, in Benzol rot und in konzentrierter Schwefelsäure braunrot löst; er färbt Acetatseide in blauen Tönen an.
<B> Additional patent </B> to main patent no. <B> 177581. </B> Process for the preparation of an azo dye. The present process relates to the preparation of a blue acetate silk dye and is characterized in that diazotized 3; 6-dichloro-2,4-dinitraniline with 1-methyl-4-methogy-3- (ethyl-ss, y-diogy- propyl) -aniline.
<I> Example: </I> 25.2 parts of 3,6-dichloro-2,4-di-nitra, niline are dissolved in 125 parts of sulfuric acid monohydrate of <B> 50 '</B> and the solution is added slowly with 6.9 parts of sharply dried nitrite between 50 and <B> 60 '. </B> After a short time, the diazo solution is cooled to 30 and gradually poured into an ice-cold solution of 23.9 parts of 1-methyl-4- methoxy-3- (ethyl-ss, γ-dioxypropyl) aniline in 500 parts of water and 13 parts of 30% hydrochloric acid, to which 80 parts of sodium acetate were added before coupling, allowed to run in;
by adding caustic soda at the same time, you ensure that the coupling material does not become minerally acidic. The dye freed from the mother liquor is taken up in benzene; the filtered benzene solution is concentrated, the dye is precipitated with petroleum ether and separated from additions that do not turn red; For complete purification, it is crystallized from a little benzene or alcohol.
It is a dark brown powder that dissolves blue-violet in alcohol and acetone, red in benzene and brown-red in concentrated sulfuric acid; he stains acetate silk in blue tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH177581T | 1934-07-18 | ||
CH182278T | 1934-07-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH182278A true CH182278A (en) | 1936-01-31 |
Family
ID=25719998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH182278D CH182278A (en) | 1934-07-18 | 1934-07-18 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH182278A (en) |
-
1934
- 1934-07-18 CH CH182278D patent/CH182278A/en unknown
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