[go: up one dir, main page]

CH231413A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH231413A
CH231413A CH231413DA CH231413A CH 231413 A CH231413 A CH 231413A CH 231413D A CH231413D A CH 231413DA CH 231413 A CH231413 A CH 231413A
Authority
CH
Switzerland
Prior art keywords
azo dye
production
new azo
yellow
new
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH231413A publication Critical patent/CH231413A/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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr.<B>229185.</B>    Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es     wurde    ,gefunden, dass man     einen    neuen       Azofarbstoff    erhält, wenn man das     2-Oxy-          5'-methyl-4'-aminoazobenzol    mit     Bernstein-          säureanhydrid    in der     Aminogruppe        acyliert.     



  Der neue Farbstoff bildet ein gelbbraunes  Pulver,     das,    sich in, Wasser mit gelber Farbe  löst, und das     Acetatkunstseide    aus wässeri  gem Bade in echten .gelben Tönen färbt.    <I>Beispiel:</I>  22,7 Teile des     2-Oxy-5'-methyl-4'-amino-          azobenzols,    das man durch     Diazotieren    des       p-Toluolsulfonsäureesters    des     1-Oxy-2-amino-          benzols,    Kuppeln :

  dieser     Diazoverbindung    mit  der     co-Methansulfonsäure    des     1-Amino-2-          methylbenzols,    Abspaltung .der     Toluolsulfon-          säure    und der     co-Methansulfon:säure,    erhält,  werden in 150 Teilen Benzol mit 11 Teilen       Bernsteinsäurea,nhydrid    während etwa zwei    Stunden bei 65-70  behandelt.

   Darnach wird  das Benzol     abdestilliert    und der Rückstand  in 500 Teilen Wasser     mit    Ammoniak in Lö  sung     ,gebracht.    Daraus wird der Farbstoff  mit Kochsalz als     Ammoniumsalz    ausgefällt,       abgenutscht    und im Vakuum     getrocknet.  



  <B> Additional patent </B> to main patent no. <B> 229185. </B> Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the 2-oxy-5'-methyl-4'-aminoazobenzene is acylated with succinic anhydride in the amino group.



  The new dye forms a yellow-brown powder, which dissolves in water with a yellow color and dyes the acetate artificial silk from aqueous baths in real yellow tones. <I> Example: </I> 22.7 parts of 2-oxy-5'-methyl-4'-aminazobenzene, which is coupled by diazotizing the p-toluenesulfonic acid ester of 1-oxy-2-aminobenzene :

  This diazo compound with the co-methanesulphonic acid of 1-amino-2-methylbenzene, elimination of the toluenesulphonic acid and the co-methanesulphonic acid, are obtained in 150 parts of benzene with 11 parts of succinic acid anhydride for about two hours at 65- 70 treated.

   The benzene is then distilled off and the residue is dissolved in 500 parts of water with ammonia. The dyestuff is precipitated as the ammonium salt with sodium chloride, filtered off with suction and dried in vacuo.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes,dadurch gekennzeichnet, dass man das 2=Oxy-5'-methyl-4'-aminoazobenzol mit Bernsteinsäureanhydrid in der Amino- Igruppe acyliert. Der neue Farbstoff bildet ein gelbbraunes Pulver, das- sieh in Wasser mit gelber Farbe löst, und :das Acetatkunstseide aus wäs3eri- gern Bade in echten gelben Tönen färbt. Claim: Process for the preparation of a new azo dye, characterized in that the 2 = oxy-5'-methyl-4'-aminoazobenzene is acylated with succinic anhydride in the amino group. The new dye forms a yellow-brown powder, which dissolves in water with a yellow color, and: dyes the acetate artificial silk from a water-based bath in real yellow tones.
CH231413D 1942-07-02 1942-07-02 Process for the production of a new azo dye. CH231413A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH231413T 1942-07-02
CH229185T 1942-07-02

Publications (1)

Publication Number Publication Date
CH231413A true CH231413A (en) 1944-03-15

Family

ID=25727333

Family Applications (1)

Application Number Title Priority Date Filing Date
CH231413D CH231413A (en) 1942-07-02 1942-07-02 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH231413A (en)

Similar Documents

Publication Publication Date Title
CH231413A (en) Process for the production of a new azo dye.
CH231410A (en) Process for the production of a new azo dye.
CH231412A (en) Process for the production of a new azo dye.
CH229185A (en) Process for the production of a new azo dye.
CH231411A (en) Process for the production of a new azo dye.
CH231409A (en) Process for the production of a new azo dye.
CH249791A (en) Process for the preparation of a substantive azo dye.
CH289993A (en) Process for the preparation of an anthraquinone dye.
CH296540A (en) Process for the preparation of a monoazo dye.
CH216321A (en) Process for the production of an acidic wool dye.
CH267876A (en) Process for the production of a new azo dye.
CH237130A (en) Process for the production of a new azo dye.
CH263535A (en) Process for the preparation of a disazo dye.
CH261368A (en) Process for the preparation of a monoazo dye.
CH249784A (en) Process for the preparation of an azo dye.
CH216322A (en) Process for the production of an acidic wool dye.
CH238625A (en) Process for the production of a new azo dye.
CH309416A (en) Process for the preparation of a metal-containing trisazo dye.
CH308427A (en) Process for the preparation of an azo dye of the stilbene series.
CH257030A (en) Process for the production of a metallizable azo dye.
CH311045A (en) Process for the preparation of a yellow monoazo dye.
CH215070A (en) Process for the preparation of an azo dye.
CH233088A (en) Process for the preparation of a chromable monoazo dye.
CH309427A (en) Process for the preparation of a copperable disazo dye.
CH215071A (en) Process for the preparation of an azo dye.