CH166076A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH166076A
CH166076A CH166076DA CH166076A CH 166076 A CH166076 A CH 166076A CH 166076D A CH166076D A CH 166076DA CH 166076 A CH166076 A CH 166076A
Authority
CH
Switzerland
Prior art keywords
parts
production
azo dye
dimethyl
new azo
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 CH166076A publication Critical patent/CH166076A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00Monoazo dyes prepared by diazotising and coupling
    • C09B29/10Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/18Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
    • C09B29/20Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

      Verfahren    zur Herstellung eines     neuen        Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    der Formel  
EMI0001.0005     
    erhält, wenn man das 2'.     4'-Dimethyl-4-di-          azotriphenylamin    mit dem     4-Chlor-2-toluidid     der 2.     3-OYynaphthoesäure    kuppelt.  



  Der so erhaltene Farbstoff bildet ein  blaues Pulver. Auf geeigneten Substraten,  wie zum Beispiel Baumwolle, Wolle, Kunst  seide, hergestellt, färbt er diese in reinen.  sehr echten blauen Tönen.  



  <I>Beispiel:</I>  28,8 Teile<B>29'.</B>     4'-Dimethyl-4-a,minotriphc-          rivlamin    werden wie üblich     diazotiert    und in    eine Lösung von 31,1 Teilen des     4-Chlor-2-          toluidids    der 2.     3-Ogynaphthoesäure,    60 Tei  len 30 ö     iger        Natriumhydrogydlösung,    15  Teilen Soda und 2000 Teilen Wasser ein  getragen. Der gebildete Farbstoff fällt sofort  aus. Er wird filtriert, gewaschen und ge  trocknet.  



  Das 2' .     4'-Dimethyl    - 4 -     aminotriphenyl-          amin    kann wie     folgt    dargestellt werden:       120,.5    Teile 2'.     4'-Dimethyldiphenylamin-          2-carbonsäure,    F. 186  , 187,5 Teile     p-Nitro-          jodbenzol,    80 Teile     Kaliumkarbonat,    375  Teile Nitrobenzol und 5 Teile Naturkupfer C  werden während einer Stunde bei 195 bis  200   im Ölbad erwärmt. Das Nitrobenzol  und das überschüssige     p-Nitrojodbenzol    wer  den mit Wasserdampf abgetrieben.

   Es bleibt  eine braunrote Lösung, aus der man mit Salz  säure die 2" .     4"-Dimethyl-4'-nitrotriphenyl-          amin-2-carbonsättre    als gelber Niederschlag       abscheidet,    zurück. Durch Kristallisation aus  Eisessig erhält man den Körper in gelben  Blättchen vom F. 197 bis 198  .      100 Teile 2" .     4"-Dimethyl-4'-nitrotriphe-          nylamin-2-carbonsäure,    250 Teile     Nitroben-          zol    und 5 Teile Naturkupfer C werden wäh  rend 4 bis 5     Stunden        unter        Rückfluss    erhitzt.

    Das     Nitrobenzol    wird mit     Wasserdampf    ab  getrieben. Es bleibt ein in der Kälte er  starrendes 01 zurück. Durch Kristallisation  aus Alkohol erhält man das 2'.     4'-Dimethyl-          4-nitrotriphenylamin    in orangegelben Blätt  chen vom F. 101 bis 102'. Durch     Reduktion     mit Eisen und Salzsäure in Alkohol erhält  man das 2' .     4'-Dimethyl-4-aminotriphenyl-          amin    als farblosen Körper, dessen     Acetyl-          derivat    bei 180 bis 1.81       schmilzt.  



      Process for the production of a new azo dye. It has been found that a new azo dye of the formula
EMI0001.0005
    if you get the 2 '. 4'-Dimethyl-4-diazotriphenylamine couples with the 4-chloro-2-toluidide of the 2. 3-OYynaphthoic acid.



  The dye thus obtained forms a blue powder. Produced on suitable substrates such as cotton, wool, artificial silk, he dyes them in pure. very real blue tones.



  <I> Example: </I> 28.8 parts <B> 29 '. </B> 4'-Dimethyl-4-a, minotriphcrivlamin are diazotized as usual and poured into a solution of 31.1 parts of the 4th -Chlor-2-toluidids of 2. 3-ogynaphthoic acid, 60 parts of 30 iger sodium hydrogen solution, 15 parts of soda and 2000 parts of water. The dye formed precipitates immediately. It is filtered, washed and dried.



  The 2 '. 4'-Dimethyl - 4 - aminotriphenylamine can be represented as follows: 120.5 parts of 2 '. 4'-Dimethyldiphenylamine-2-carboxylic acid, mp 186, 187.5 parts of p-nitroiodobenzene, 80 parts of potassium carbonate, 375 parts of nitrobenzene and 5 parts of natural copper C are heated for one hour at 195 to 200 in an oil bath. The nitrobenzene and the excess p-nitroiodobenzene who are driven off with steam.

   A brown-red solution remains, from which the 2 ". 4" -Dimethyl-4'-nitrotriphenylamine-2-carboxylic acid is deposited as a yellow precipitate with hydrochloric acid. Crystallization from glacial acetic acid gives the body in yellow leaves with a melting point of 197 to 198. 100 parts of 2 ". 4" -Dimethyl-4'-nitrotriphenylamine-2-carboxylic acid, 250 parts of nitrobenzene and 5 parts of natural copper C are refluxed for 4 to 5 hours.

    The nitrobenzene is driven off with steam. There remains an 01 staring in the cold. The 2 'is obtained by crystallization from alcohol. 4'-Dimethyl-4-nitrotriphenylamine in orange-yellow leaves from 101 to 102 '. The 2 'is obtained by reduction with iron and hydrochloric acid in alcohol. 4'-Dimethyl-4-aminotriphenylamine as a colorless body, the acetyl derivative of which melts at 180 to 1.81.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azo- farbstoffes der Formel EMI0002.0020 dadurch gekennzeichnet, dass man das '.)'. 4' Dimethyl - 4 - diazotriphenylamin mit dem 4-Chlor-o-toluidid der 2.3-Oxynaphthoesäure kuppelt. Auf geeigneten Substraten, wie zum Beispiel Baumwolle, Wolle, Kunstseide, hergestellt, färbt er diese in reinen, sehr eehten blauen Tönen. PATENT CLAIM: Process for the production of an azo dye of the formula EMI0002.0020 characterized by having the '.)'. 4 'Dimethyl - 4 - diazotriphenylamine couples with the 4-chloro-o-toluidide of 2,3-oxynaphthoic acid. Produced on suitable substrates such as cotton, wool, rayon, he dyes them in pure, very beautiful blue tones.
CH166076D 1932-07-13 1932-07-13 Process for the production of a new azo dye. CH166076A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH163540T 1932-07-13
CH166076T 1932-07-13

Publications (1)

Publication Number Publication Date
CH166076A true CH166076A (en) 1933-12-15

Family

ID=25717793

Family Applications (1)

Application Number Title Priority Date Filing Date
CH166076D CH166076A (en) 1932-07-13 1932-07-13 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH166076A (en)

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