CH190033A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH190033A
CH190033A CH190033DA CH190033A CH 190033 A CH190033 A CH 190033A CH 190033D A CH190033D A CH 190033DA CH 190033 A CH190033 A CH 190033A
Authority
CH
Switzerland
Prior art keywords
good
azo dye
reddish yellow
dye
methyl
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 CH190033A publication Critical patent/CH190033A/en

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Description

  

  Verfahren zur Herstellung eines     Azofarustoffes.            Gegenstand    des vorliegenden Zusatz  patentes ist     ein    Verfahren zur     Herstellung     eines     Azofarbstoffes,        welches    dadurch ge  kennzeichnet     ist,

          dass    man .die     Diazoverbin-          dung    von     1-Aminobenzol-    2     -carbonsäure-          methylester-5-sulfonsäurediäthylamid    mit     1-          (2'-        Oxy-    3'-     carboxy-        5'-isulf    o)     -phenyl    -3     -ime-          thyl-5-pyrazolon    kuppelt.  



  <I>Beispiel:</I>  In eine     Mischung    von 25     Volumteilen    30  prozentiger Salzsäure und     .2,5        Gewichtsteilen          Wasser    trägt man allmählich 14,3 Gewichts  teile 1-     Aminobenzol-    2, -     carbonsäuremethyl-          ester-5-sulfonsäurediäthylamid        ein    und lässt  gleichzeitig bei etwa 10 bis 20' C etwa 8;6  Gewichtsteile einer 40prozentigen Lösung  von     Natriumnitrit    zulaufen.

   Die klare     Diazo-          lösung    lässt man bei etwa 0     ,bis    5   C in eine  Lösung von 16,5     Gewichtsteilen    1-(2'-Oxy  3'-carboxy-,5'-sulfo)-phenyl-,3-methyl-5-pyra-         zolon    in überschüssiger Soda einlaufen und       isoliert    den     Farbstoff        in    üblicher     Weise     durch Zusatz von Kochsalz.  



  Er stellt ein     orangefarbenes    Pulver dar,       ,dasi    Wolle     aus    saurem     -Bade    in     einem    lebhaf  ten     rotstichigen    Gelb von sehr     guter    Licht  echtheit     undguter    Schweiss- und     Seewasser-          echtheit    färbt und beim     Nachchromieren        ein          rotstichiges    Gelb von sehr guter Schweiss-,  Seewasser-,     Potting-    und     Walkechtheit    lie  fert.



  Process for the production of an azo-fragrant substance. The subject of the present additional patent is a process for the production of an azo dye, which is characterized by

          that .the diazo compound of 1-aminobenzene-2-carboxylic acid methyl ester-5-sulfonic acid diethylamide with 1- (2'-oxy-3'-carboxy-5'-isulfo) -phenyl -3-methyl 5-pyrazolone couples.



  <I> Example: </I> In a mixture of 25 parts by volume of 30 percent hydrochloric acid and .2.5 parts by weight of water, 14.3 parts by weight of 1- aminobenzene-2-carboxylic acid methyl ester-5-sulfonic acid diethylamide are gradually added and left at the same time at about 10 to 20 ° C about 8; 6 parts by weight of a 40 percent solution of sodium nitrite run.

   The clear diazo solution is left at about 0 to 5 ° C. in a solution of 16.5 parts by weight of 1- (2'-oxy, 3'-carboxy-, 5'-sulfo) -phenyl-, 3-methyl-5- Pyrazolon run in excess soda and isolate the dye in the usual way by adding sodium chloride.



  It represents an orange powder, which colors wool from acid baths in a vivid reddish yellow of very good lightfastness and good sweat and seawater fastness and when re-chromed a reddish yellow of very good sweat, seawater, potting and mill fastness.

Claims (1)

PATNNTAINTSPRUCH Verfahren zur Herstellung eines Azo- fa-rbstoffes, dadurch gekennzeichnet, dass mau die Diazoverbindung von 1-Amino- benzol- 2 -carbonsäuremethylmter- 5 -sulfon- säurediäthylamid mit 1-(2'-Oxy-3'-carboxy- 5'-sulfo)-phenyl- 3 -methyl- 5 -pyrazolon kup pelt. PATNNTAIN CLAIM A process for the production of an azo dye, characterized in that the diazo compound of 1-amino-benzene-2-carboxylic acid methyl-5-sulfonic acid diethylamide with 1- (2'-oxy-3'-carboxy-5 ' -sulfo) -phenyl-3-methyl-5-pyrazolone kup pelt. Der so erhaltene Farbstoff stellt ein orangefarbenes Pulver dar, das Wolle aus saurem Bade in einem lebhaften rotstichigen Gelb von sehr guter Lichtechtheit und guter Schweiss- und. Seewasserechtheit färbt und beim Nachchromieren ein rotstichiges Gelb von sehr guter Schweiss-, Seewasser-, Fotting- und Walhechtheit liefert. The dye thus obtained is an orange powder, the wool from an acid bath in a vivid reddish yellow of very good lightfastness and good perspiration and resistance. Color fastness to sea water and when chromium plating provides a reddish yellow of very good fastness to sweat, sea water, Fotting and whale.
CH190033D 1934-08-04 1935-07-30 Process for the preparation of an azo dye. CH190033A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE190033X 1934-08-04
DE100834X 1934-08-10
CH185949T 1935-07-30

Publications (1)

Publication Number Publication Date
CH190033A true CH190033A (en) 1937-03-31

Family

ID=27177730

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190033D CH190033A (en) 1934-08-04 1935-07-30 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH190033A (en)

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