CH200253A - Process for the production of a water-insoluble azo dye for dyeing and printing cellulose esters and ethers. - Google Patents

Process for the production of a water-insoluble azo dye for dyeing and printing cellulose esters and ethers.

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Publication number
CH200253A
CH200253A CH200253DA CH200253A CH 200253 A CH200253 A CH 200253A CH 200253D A CH200253D A CH 200253DA CH 200253 A CH200253 A CH 200253A
Authority
CH
Switzerland
Prior art keywords
dyeing
ethers
production
water
cellulose esters
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH200253A publication Critical patent/CH200253A/en

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Description

  

  Verfahren zur Herstellung eines wasserunlöslichen     Azofarbstofes    zum Färben  und Drucken von     Zellnloseestern    und     -äthern.       Vorliegendes     Patent    bezieht sich auf ein  Verfahren zur     Herstellung    eines wasserun  löslichen     Azofarbstoffes    zum Färben     und     Drucken von     Zelluloseestern    und     -äthern,    da  durch -gekennzeichnet,

       dass    man     diazotiertes          4-Aminoacetophenon    in     sodaalkalischer    Lö  sung mit 1-     Phenyl    - 3 -     methyl    - 5 -     pyrazolon     kuppelt.  



  Der so erhaltene Farbstoff färbt Acetat  seide nach Zusatz eines geeigneten     Disper-          giermittels    in     grüns@tichig    gelben     Farbtönen     von sehr     guter    Lichtechtheit.  



  <I>Beispiel:</I>  135 Teile     4-Aminoacetophenon    werden in  der üblichen Weise     diazotiert    und     in        soda-          alkalischer    Lösung mit 175 Teilen     1-Phenyl-          3-methyl-5-pyrazolon    gekuppelt. Der gebil-         dete    Farbstoff     wird    dann     abgesaugt,    ge  waschen und     getrocknet.  



  Process for the production of a water-insoluble azo dye for dyeing and printing cellulose esters and ethers. The present patent relates to a process for the production of a water-insoluble azo dye for dyeing and printing cellulose esters and ethers, as indicated by

       that one couples diazotized 4-aminoacetophenone in soda-alkaline solution with 1-phenyl - 3 - methyl - 5 - pyrazolone.



  The dye obtained in this way dyes the acetate silk after the addition of a suitable dispersing agent in greenish yellow shades of very good lightfastness.



  <I> Example: </I> 135 parts of 4-aminoacetophenone are diazotized in the usual way and coupled with 175 parts of 1-phenyl-3-methyl-5-pyrazolone in a soda-alkaline solution. The dyestuff formed is then filtered off with suction, washed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines waeser- unlöslichen Azofarbstoffes zum Färben und Drucken von Zelluloseestern und -äthern,,da- durch gekennzeichnet, dass man .diazotiertes 4-Aminoacetophenon in solaalkalischer Lö sung mit 1- Phenyl - 3 - methyl - 5 - pyrazolon kuppelt. PATENT CLAIM: Process for the production of a water-insoluble azo dye for dyeing and printing cellulose esters and ethers, characterized in that diazotized 4-aminoacetophenone is coupled with 1-phenyl-3-methyl-5-pyrazolone in a sola-alkaline solution . Der so erhaltene Farbstoff färbt Acetat seide nach Zusatz eines :geeigneten Disper- giermittels in grünsti:chig gelben Farbtönen von sehr guter Lichtechtheit. The dyestuff obtained in this way dyes the acetate silk after the addition of a suitable dispersant in greenish yellow shades of very good lightfastness.
CH200253D 1936-05-15 1937-05-03 Process for the production of a water-insoluble azo dye for dyeing and printing cellulose esters and ethers. CH200253A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200253X 1936-05-15
CH197283T 1937-05-03

Publications (1)

Publication Number Publication Date
CH200253A true CH200253A (en) 1938-09-30

Family

ID=25722966

Family Applications (1)

Application Number Title Priority Date Filing Date
CH200253D CH200253A (en) 1936-05-15 1937-05-03 Process for the production of a water-insoluble azo dye for dyeing and printing cellulose esters and ethers.

Country Status (1)

Country Link
CH (1) CH200253A (en)

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