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CH145154A - Process for the preparation of a yellow wool dye. - Google Patents

Process for the preparation of a yellow wool dye.

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Publication number
CH145154A
CH145154A CH145154DA CH145154A CH 145154 A CH145154 A CH 145154A CH 145154D A CH145154D A CH 145154DA CH 145154 A CH145154 A CH 145154A
Authority
CH
Switzerland
Prior art keywords
yellow
preparation
dye
wool dye
wool
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 CH145154A publication Critical patent/CH145154A/en

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Description

  

  Verfahren zur Darstellung eines gelben     Wollfarbstoffes.       Es wurde gefunden, dass man zu gelben       Wollfarbstoffen    gelangt, die eine grosse Licht  echtheit besitzen, wenn man     Diazoverbindun-          gen    von Basen der allgemeinen Formel:

    
EMI0001.0005     
    worin die     Arylkerne    beliebig substituiert sein  können, und R Wasserstoff oder     Alkyl    be  deutet, mit solchen     Arylpyrazolonen    oder  ihren     Substitutionsprodukten    vereinigt, die  im     Arylkern    durch Halogen substituiert sind,  und gegebenenfalls die so erhältlichen Farb  stoffe     sulfiert.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines gelben Woll  farbstoffes, welches dadurch gekennzeichnet  ist, dass man     meta-Aminobenzolsulfosäure-          phenylamid    dianotiert und mit dem Natrium  salz des 1-(2'-Chlor-5'-sulfophenyl)

  -3-methyl-         5-pyrazolons    in Gegenwart überschüssiger  Soda kuppelt.  



       Beispiel:     24,5 Gewichtsteile     meta-Aminobenzolsulfo-          säure-phenylamid    werden mit 48 Gewichts  teilen Salzsäure 20       B6    und 6,9 Gewichts  teilen Nitrit dianotiert und mit 31     ()'(ewichts-          teilen    des     Natriumsalzes    des     1-(2'-Chlor-5'-          sulfophenyl)-3-methyl-5-pyrazolons    in Gegen  wart überschüssiger Soda gekuppelt. Es ent  steht ein gelber     Farbstoff,    der mit Kochsalz  abgeschieden wird und nach dem Trocknen  ein gelbes, in Wasser leicht lösliches Pulver  bildet.

   Er färbt Wolle in     grünstichig-gelben     Tönen von sehr guter Lichtechtheit.



  Process for the preparation of a yellow wool dye. It has been found that yellow wool dyes are obtained, which have a high lightfastness, if one uses diazo compounds of bases of the general formula:

    
EMI0001.0005
    wherein the aryl nuclei can be substituted as desired, and R is hydrogen or alkyl be, combined with those arylpyrazolones or their substitution products which are substituted in the aryl nucleus by halogen, and optionally sulfated the dyes thus obtainable. The subject of this patent is a process for the preparation of a yellow wool dye, which is characterized in that meta-aminobenzenesulfonic acid phenylamide is dianotated and the sodium salt of 1- (2'-chloro-5'-sulfophenyl)

  -3-methyl-5-pyrazolones in the presence of excess soda couples.



       Example: 24.5 parts by weight of meta-aminobenzenesulfonic acid phenylamide are dianotized with 48 parts by weight of hydrochloric acid 20 B6 and 6.9 parts by weight of nitrite and mixed with 31 () '(parts by weight of the sodium salt of 1- (2'-chlorine) 5'-sulfophenyl) -3-methyl-5-pyrazolones are coupled in the presence of excess soda, resulting in a yellow dye which is deposited with common salt and, after drying, forms a yellow powder that is easily soluble in water.

   It dyes wool in greenish-yellow shades of very good lightfastness.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines gelben Wollfarbstoffes, dadurch gekennzeichnet, dah man meta-Aminobenzolsulfosäure-phenylamid dianotiert und mit dem Natriumsalz des 1- (2'-Chlor-5'-sulfophenyl)-3-iriethyl-5-pyrazolons in Gegenwart überschüssiger Soda kuppelt. Der so erhaltene Farbstoff stellt in trocke nem Zustande ein gelbes, in Wasser leicht lösliches Pulver dar und färbt Wolle in grünstichig-gelben Tönen von sehr guter Lichtechtheit an. PATENT CLAIM: Process for the preparation of a yellow wool dye, characterized in that meta-aminobenzenesulfonic acid-phenylamide is dianotized and treated with the sodium salt of 1- (2'-chloro-5'-sulfophenyl) -3-iriethyl-5-pyrazolone in the presence of excess soda clutch. When dry, the dyestuff thus obtained is a yellow powder which is readily soluble in water and dyes wool in greenish-yellow shades of very good lightfastness.
CH145154D 1928-09-21 1929-09-19 Process for the preparation of a yellow wool dye. CH145154A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE145154X 1928-09-21

Publications (1)

Publication Number Publication Date
CH145154A true CH145154A (en) 1931-02-15

Family

ID=5670614

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145154D CH145154A (en) 1928-09-21 1929-09-19 Process for the preparation of a yellow wool dye.

Country Status (1)

Country Link
CH (1) CH145154A (en)

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