CH233349A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH233349A
CH233349A CH233349DA CH233349A CH 233349 A CH233349 A CH 233349A CH 233349D A CH233349D A CH 233349DA CH 233349 A CH233349 A CH 233349A
Authority
CH
Switzerland
Prior art keywords
new
orange
preparation
dye
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ici Ltd filed Critical Ici Ltd
Publication of CH233349A publication Critical patent/CH233349A/en

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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/16—Naphthol-sulfonic acids
    • 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
    • C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
    • C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
    • C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
    • C09B29/3647—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms
    • C09B29/3652—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles
    • C09B29/366—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles containing hydroxy-1,2-diazoles, e.g. pyrazolone

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     )ionoazofarbstoffes.       Die vorliegende Erfindung betrifft ein  Verfahren zur Herstellung eines neuen sauren       3lonoazofarbstoffes,    der sich zum     Färben,    von  tierischen     Fasern        eignet.     



  Erfindungsgemäss erhält man den neuen       Monoazofarbstoff,    indem man     4-Amino-2-N-          äthyl-uo-.chloracettoluidi.d        diazotiert    und die       erhaltene        Diazoverbindung    . mit     2-Naphthol-          6,8-disulfosäure    kuppelt.  



  Der neue Farbstoff stellt ein orangenes  Pulver dar, welches sich in Wasser unter       B=ildung    einer orangenen Lösung und in       konz.    Schwefelsäure unter Bildung einer       gelblich-orangenen    Lösung löst. Er färbt       Wolle    aus     einem    Schwefelsäure und Glauber  salz enthaltenden Färbebad in hellen gelblich  orangenen Farbtönen von sehr guter Echtheit  gegen     starkes    Waschen, Walken und gegen  Licht.  



  Die Erfindung wird, ohne -darauf be  schränkt zu sein, durch das nachstehende       Beispiel,    worin die Teile Gewichtsteile bedeu  ten, erläutert.    <I>Beispiel:</I>  22,65 Teile     4-Amino    - 2 -     N-äthyl    -     co-    chlor  acettoluidid werden. in einem aus 300 Teilen  Wasser und 25 Teilen 36 %     iger    Salzsäure be  stehenden Gemisch aufgelöst und hierauf mit  6,9 Teilen     Natriumnitrit        versetzt.     



  Die Lösung der so     erhaltenen        Diazover-          bindung        wird    unter Rühren und Kühlen in  eine Lösung von 31 Teilen     2-Naphthol-6,8-          disulfosäure    in 320 Teilen Wasser, enthal  tend 80 Teile     Natriumchlorid    und 31,5 Teile       Natriumcarbonat        (ber.    auf wasserfreies     Na-          triumcarbonat)    eingetragen.

   Nach vollendeter  Kupplung wird der neue Farbstoff durch Zu  satz von weiterem     Natriumchlorid        ausgesal-          zen:,        abfiltliert        und    getrocknet.



  Process for the preparation of a new) ionoazo dye. The present invention relates to a process for the production of a new acidic 3lonoazo dye which is suitable for dyeing animal fibers.



  According to the invention, the new monoazo dye is obtained by diazotizing 4-amino-2-N-ethyl-uo-chloracettoluidi.d and the resulting diazo compound. with 2-naphthol-6,8-disulfonic acid.



  The new dye is an orange powder which dissolves in water to form an orange solution and in conc. Sulfuric acid dissolves to form a yellowish-orange solution. It dyes wool from a dyebath containing sulfuric acid and Glauber's salt in light yellowish orange shades of very good fastness to heavy washing, tumbling and light.



  The invention is illustrated, without being restricted thereto, by the following example, in which the parts mean parts by weight. <I> Example: </I> 22.65 parts of 4-amino-2-N-ethyl-co-chloroacettoluidid are used. dissolved in a mixture consisting of 300 parts of water and 25 parts of 36% strength hydrochloric acid and then treated with 6.9 parts of sodium nitrite.



  The solution of the diazo compound obtained in this way is converted into a solution of 31 parts of 2-naphthol-6,8-disulfonic acid in 320 parts of water, 80 parts of sodium chloride and 31.5 parts of sodium carbonate (calculated on anhydrous Na - trium carbonate).

   After coupling is complete, the new dye is salted out by adding more sodium chloride :, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Monoazofarbstoffes,dadurch .gekennzeichnet, dass man 4-Amin.o-2-N-äthyl-co-chloracettolui- did diazotiert und die erhaltene Diazoverbin- ,dung mit 2-Naphthol-6,8-idisulfasäure kuppelt. PATENT CLAIM: Process for the preparation of a new monoazo dye, characterized in that 4-amin.o-2-N-ethyl-co-chloroacettoluid is diazotized and the diazo compound obtained is diazotized with 2-naphthol-6,8-idisulfic acid clutch. Der neue Farbstoff stellt ein orangenes Pulver dar, welches sieh in Wasser unter Eildun- einer orangenen Lösung und in konz. Schwefelsäure unter Bildun- einer gelblich-orangenen Lösung löst. The new dye is an orange powder, which you can see in water under an orange solution and in conc. Sulfuric acid dissolves to form a yellowish-orange solution. Er färbt Wolle aus einem Schwefelsäure und Glauber- salz enthaltenden Färbebad in hellen gelblich- oran-eiien Farbtönen von sehr guter Echtheit -e-en starkes Wasehtn, Walken und -egen Licht.. It dyes wool from a dyebath containing sulfuric acid and Glauber's salt in light yellowish-orange-egg shades of very good fastness -en strong washing, fulling and -against light.
CH233349D 1940-08-05 1941-09-10 Process for the preparation of a new monoazo dye. CH233349A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB233349X 1940-08-05
CH231066T 1943-12-08

Publications (1)

Publication Number Publication Date
CH233349A true CH233349A (en) 1944-07-15

Family

ID=25727538

Family Applications (1)

Application Number Title Priority Date Filing Date
CH233349D CH233349A (en) 1940-08-05 1941-09-10 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH233349A (en)

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