CH148983A - 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
CH148983A
CH148983A CH148983DA CH148983A CH 148983 A CH148983 A CH 148983A CH 148983D A CH148983D A CH 148983DA CH 148983 A CH148983 A CH 148983A
Authority
CH
Switzerland
Prior art keywords
yellow
preparation
methyl
dye
wool dye
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 CH148983A publication Critical patent/CH148983A/en

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Description

  

  Verfahren zur Darstellung eines gelben     Wollfarbstoffes.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines gelben     Woll-          farbstoffes,    welches dadurch gekennzeichnet  ist, dass man     1-Methyl-4-aminobenzol-2-sulfö-          säure-phenylamid        dianotiert    und mit dem Na  triumsalz des     1-(2'-Chlor-5'-sulfophenyl)-3-          methyl-5-pyrazolons    in Gegenwart überschüs  siger Soda kuppelt.  



  <I>Beispiel:</I>  26,2 Gewichtsteile     1-lMethyl-4-aminoben-          zol-2-sulfosäure-phenylamid    werden mit 48  Gewichtsteilen Salzsäure 20'     B@    und 6,9  Gewichtsteilen Nitrit dianotiert und mit     31-          Gewichtsteilen    des     Natriumsalzes    des     1-(2'-          Chlor-5'-sulfophenyl)-3-methyl-5-pyrazolons    in  Gegenwart von überschüssiger Soda gekup  pelt. Es entsteht ein gelber     Farbstoff,    der  mit Kochsalz abgeschieden wird und nach  dem Trocknen ein gelbes, in Wasser     leieht       lösliches Pulver bildet.

   Er färbt Wolle in       grünstichig-gelben    Tönen von guter Licht  echtheit an.



  Process for the preparation of a yellow wool dye. The subject of this patent is a process for the preparation of a yellow wool dye, which is characterized in that 1-methyl-4-aminobenzene-2-sulfoic acid-phenylamide is dianotated and trium salt of 1- (2'- Chlorine-5'-sulfophenyl) -3-methyl-5-pyrazolones coupled in the presence of excess soda.



  <I> Example: </I> 26.2 parts by weight of 1-l-methyl-4-aminobenzene-2-sulfonic acid-phenylamide are dianotized with 48 parts by weight of hydrochloric acid 20 'B @ and 6.9 parts by weight of nitrite and mixed with 31 parts by weight of the Sodium salt of 1- (2'-chloro-5'-sulfophenyl) -3-methyl-5-pyrazolone in the presence of excess soda gekup pelt. A yellow dye is created, which is deposited with common salt and, after drying, forms a yellow powder that is slightly soluble in water.

   It dyes wool in greenish-yellow tones with good lightfastness.

Claims (1)

- PATENTANSPRUCH: Verfahren zur Darstellung eines gelben Wollfarbstoffes, dadurch gekennzeichnet, dass man 1-1Methyl-4-aminobenzol-2-sulfosäure-phe- nylamid dianotiert und mit dem Natriumsalz des 1-(2'-Chlor-5'-sulfophenyl)-3-methyl-5-py- razolons 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 grün stichig-gelben Tönen von guter Lichtechtheit an. - PATENT CLAIM: Process for the preparation of a yellow wool dye, characterized in that 1-1-methyl-4-aminobenzene-2-sulfonic acid-phenylamide is dianotated and with the sodium salt of 1- (2'-chloro-5'-sulfophenyl) - 3-methyl-5-py- razolons in the presence of excess soda couples. The dyestuff obtained in this way is a yellow powder which is readily soluble in water when dry and dyes wool in greenish-yellow shades of good lightfastness.
CH148983D 1928-09-21 1929-09-19 Process for the preparation of a yellow wool dye. CH148983A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE148983X 1928-09-21
CH145154T 1929-09-19

Publications (1)

Publication Number Publication Date
CH148983A true CH148983A (en) 1931-08-15

Family

ID=25714621

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148983D CH148983A (en) 1928-09-21 1929-09-19 Process for the preparation of a yellow wool dye.

Country Status (1)

Country Link
CH (1) CH148983A (en)

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