CH308754A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH308754A
CH308754A CH308754DA CH308754A CH 308754 A CH308754 A CH 308754A CH 308754D A CH308754D A CH 308754DA CH 308754 A CH308754 A CH 308754A
Authority
CH
Switzerland
Prior art keywords
dye
amino
preparation
disazo dye
disazo
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Farbe Bayer
Original Assignee
Bayer 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 Bayer Ag filed Critical Bayer Ag
Publication of CH308754A publication Critical patent/CH308754A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
    • C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
    • C09B43/14—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with phosgene or thiophosgene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 302.156.    Verfahren zur Herstellung eines     Disazofarbstoffes.            Gegenstand    des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Disazo-          farbstoffes,    das darin besteht, dass man     diazo-          tierte        1-Amino-4-methvlbenzol-3-sulfonsäure          mit        1-Amino-3-glyli:olaminobenzol    kuppelt     und     den so erhaltenen     Aminomonoazofarbstoff     mittels     Phosgen    in den entsprechenden Harn  stoff überführt.  



  Der neue Farbstoff ist ein gelbes Pulver,  das sich in Wasser gut löst und Baumwolle  sowie Fasern aus regenerierter     Cellulose    in  klaren gelben Tönen von sehr guter neutraler  und .alkalischer     Ätzbarkeit    färbt.  



       Beispiel:     <B>187</B> Gewichtsteile     1-Amino-4-methylbenzol-          3-sulfonsäure    werden in bekannter Weise di  anotiert und die     Diazoverbindung    wird mit  <B>166</B> Gewichtsteilen     1-Amino-3-glykolylamino-          benzol    sauer gekuppelt. Der Aminoa7ofarb-    Stoff wird mit     Phosgen    in den     Harnstoff     übergeführt.

   Der     Disazofarbstoff    ist ein     gut     wasserlösliches gelbes Pulver; er färbt Baum  wolle und Fasern aus regenerierter     Cellulose     in klaren gelben Tönen von sehr guter neu  traler und alkalischer     Ätzbarkeit.  



  <B> Additional patent </B> to main patent no. 302.156. Process for the preparation of a disazo dye. The present patent relates to a process for the preparation of a disazo dye which consists in coupling diazotized 1-amino-4-methylbenzene-3-sulfonic acid with 1-amino-3-glyli: olaminobenzene and the aminomonoazo dye thus obtained converted into the corresponding urea by means of phosgene.



  The new dye is a yellow powder that dissolves well in water and dyes cotton and regenerated cellulose fibers in clear yellow tones with very good neutral and alkaline etchability.



       Example: <B> 187 </B> parts by weight of 1-amino-4-methylbenzene-3-sulfonic acid are di-anotated in a known manner and the diazo compound is mixed with <B> 166 </B> parts by weight of 1-amino-3-glycolylamino- benzene acid coupled. The amino acid is converted into urea with phosgene.

   The disazo dye is a readily water-soluble yellow powder; it dyes cotton and fibers from regenerated cellulose in clear yellow tones with very good neutral and alkaline etchability.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, da.ss man diazotierte 1-Amino-4-methylbenzol-3-sulfon- säure mit 1-Amino-3-glykolaminobenzol kup pelt und den so erhaltenen Aminomonoazo- farbsto.ff mittels Phosgen in .den entsprechen den Harnstoff überführt. Der neue Farbstoff ist ein gelbes Pulver, PATENT CLAIM: Process for the production of a disazo dye, characterized in that diazotized 1-amino-4-methylbenzene-3-sulfonic acid is coupled with 1-amino-3-glycolaminobenzene and the aminomonoazo-dye thus obtained using phosgene in .den corresponding to the urea transferred. The new dye is a yellow powder, das sich in Wasser gut löst und Baumwolle sowie Fasern aus regenerierter Cellulose in klaren gelben Tönen von sehr guter neutraler und alkalischer Ätzbarkeit färbt. which dissolves well in water and dyes cotton and fibers made of regenerated cellulose in clear yellow tones with very good neutral and alkaline etchability.
CH308754D 1951-04-09 1952-03-18 Process for the preparation of a disazo dye. CH308754A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE308754X 1951-04-09
CH302156T 1952-03-18

Publications (1)

Publication Number Publication Date
CH308754A true CH308754A (en) 1955-07-31

Family

ID=25734471

Family Applications (1)

Application Number Title Priority Date Filing Date
CH308754D CH308754A (en) 1951-04-09 1952-03-18 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH308754A (en)

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