CH217236A - Process for the preparation of a new disazo dye. - Google Patents

Process for the preparation of a new disazo dye.

Info

Publication number
CH217236A
CH217236A CH217236DA CH217236A CH 217236 A CH217236 A CH 217236A CH 217236D A CH217236D A CH 217236DA CH 217236 A CH217236 A CH 217236A
Authority
CH
Switzerland
Prior art keywords
reddish
preparation
disazo dye
yellow
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 CH217236A publication Critical patent/CH217236A/en

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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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/021—Disazo dyes characterised by two coupling components of the same type
    • C09B35/03—Disazo dyes characterised by two coupling components of the same type in which the coupling component is a heterocyclic compound

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

Description

  

  Verfahren zur Herstellung eines neuen     Disazofarbstoffes.       Die vorliegende Erfindung betrifft. ein  Verfahren zur Herstellung eines neuen       Disazofarbstoffes.    Erfindungsgemäss wird         tetrazotiertes        Adipin-,di-(4-amino-2-N-benzyl.          to.luidid)    der     Formel:            [NHz(5)    .     CH3(2)    .     CEH4    .

   N     CH2        C,H,    .     C0]?        C4H$       mit zwei     Molekularmengen        1-(4'-Sulfo-          phenyl)-3-methyl-5-pyrazolon    gekuppelt.    <I>Beispiel:</I>  53 Teile     Adipin-di-(4-amino-2-N-benzyl-          to#luidid)    der     Formel:            [NH2(5)    .     CH3(2)    .     CIH4    .

   N     CHZ        CIHI    .     C0]        z        CIH$       werden in einem Gemisch von 480     Teilen     Wasser und 50 Teilen 36%iger Salzsäure  gelöst, und die Lösung wird auf 5   bis 10   C  abgekühlt. Hierauf wird eine Lösung von  13,8 Teilen     Natriumnitrit    in 100 Teilen  Wasser hinzugesetzt. Die     Tetrazot.ierung     geht rasch von statten, wobei die     Tetrazo-          verbindung    in Lösung ist.

   Nachdem diese  Lösung, wenn nötig,     filtriert    wurde, wird  sie unter gutem Rühren zu einer gekühlten  Lösung (0     bis    5   C) von 55,2 Teilen des         Natriumsalzes    von 1- (4'-     Sulf        ophenyl)    - 3     -          methy'1-5-pyrazolon    in 800 Teilen Wasser,       welche    mit 42 Teilen wasserfreiem     Natrium-          carbonat    und 160 Teilen     Chlornatrium    ver  setzt wurde, hinzugegeben.

   Der neue Farb  stoff wird durch Erhitzen seiner     Suspension     auf 40<B>'</B>bis . 45   C und     nachheriges        Filtrieren          isoliert.        Hieraus    wird er getrocknet. Er bildet  ein     rötlich-gelbes    Pulver,     welehes    sich in  Wasser mit     rötlieh-gelber    Farbe und     in    kon  zentrierter Schwefelsäume mit     grünlieh-gelber         Farbe löst. Er färbt Wolle aus saurem Bad in       rötlich-gelben    Tönen.

   Die Färbungen zeich  nen sich durch     hervorragende    Wasch-, Walk-,  Schwefelkammer-,     Schweiss-    und Lichtecht  heit aus.



  Process for the preparation of a new disazo dye. The present invention relates to. a process for the preparation of a new disazo dye. According to the invention, tetrazotized adipine-, di- (4-amino-2-N-benzyl. To.luidid) of the formula: [NHz (5). CH3 (2). CEH4.

   N, CH2 C, H,. C0]? C4H $ coupled with two molecular amounts of 1- (4'-sulfophenyl) -3-methyl-5-pyrazolone. <I> Example: </I> 53 parts of adipine-di- (4-amino-2-N-benzyl- to # luidide) of the formula: [NH2 (5). CH3 (2). CIH4.

   N CHZ CIHI. C0] z CIH $ are dissolved in a mixture of 480 parts of water and 50 parts of 36% strength hydrochloric acid, and the solution is cooled to 5-10.degree. A solution of 13.8 parts of sodium nitrite in 100 parts of water is then added. The tetrazotization takes place quickly, the tetrazo compound being in solution.

   After this solution has been filtered, if necessary, it becomes a cooled solution (0 to 5 ° C.) of 55.2 parts of the sodium salt of 1- (4'-sulfophenyl) -3-methy'1-5 with thorough stirring pyrazolone in 800 parts of water, which was set ver with 42 parts of anhydrous sodium carbonate and 160 parts of sodium chloride, added.

   The new dye is produced by heating its suspension to 40 <B> '</B> to. 45 C and subsequent filtration isolated. From this it is dried. It forms a reddish-yellow powder, which dissolves in water with a reddish-yellow color and in concentrated sulfur fringes with a greenish-yellow color. He dyes wool from an acid bath in reddish-yellow tones.

   The dyeings are characterized by their excellent wash, fulling, sulfur chamber, perspiration and lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Disazofarbstoffes, dadurch gekennzeichnet, dass tetrazotiertes Adipin-di-(4-amino-2-N- benzyltoluidid) der Formel: [NH2(5) . CH3(2) . CBH4 . PATENT CLAIM: Process for the preparation of a new disazo dye, characterized in that tetrazotized adipine di (4-amino-2-N-benzyltoluidide) of the formula: [NH2 (5). CH3 (2). CBH4. N CH2 C6H5 . C0]._ C°HII mit zwei Molekula.rmengen 1-(4'-Sulfo- phenyl) - 3 - methyl - 5 - pyrazolon gekuppelt wird. Der erhaltene Farbstoff bildet ein rötlich gelbes Pulver, welches sich in Wasser mit rötlich-gelber Farbe und in konzentrierter Schwefelsäure mit grünlich-gelber Farbe löst. Er färbt \Volle aus saurem Bad in rötlieh- gelben Tönen. N CH2 C6H5. C0] ._ C ° HII is coupled with two molecular amounts of 1- (4'-sulfophenyl) - 3 - methyl - 5 - pyrazolone. The dye obtained forms a reddish-yellow powder which dissolves in water with a reddish-yellow color and in concentrated sulfuric acid with a greenish-yellow color. He dyes full from an acid bath in reddish-yellow shades. Die Färbungen zeichnen sieh durch hervorragende Wasch-, Walk-, Schwe felkammer-, Schweiss- und Lichtechtheit aus. The dyeings are characterized by excellent wash, fulling, sulfur chamber, perspiration and lightfastness.
CH217236D 1938-12-22 1939-12-18 Process for the preparation of a new disazo dye. CH217236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB217236X 1938-12-22

Publications (1)

Publication Number Publication Date
CH217236A true CH217236A (en) 1941-10-15

Family

ID=10167762

Family Applications (1)

Application Number Title Priority Date Filing Date
CH217236D CH217236A (en) 1938-12-22 1939-12-18 Process for the preparation of a new disazo dye.

Country Status (1)

Country Link
CH (1) CH217236A (en)

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