CH140101A - Process for the preparation of a cotton dye. - Google Patents

Process for the preparation of a cotton dye.

Info

Publication number
CH140101A
CH140101A CH140101DA CH140101A CH 140101 A CH140101 A CH 140101A CH 140101D A CH140101D A CH 140101DA CH 140101 A CH140101 A CH 140101A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
cotton
mol
amino compound
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 CH140101A publication Critical patent/CH140101A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

      \'erfahren    zur Darstellung eines     Baamwollfarbstofes.       Gegenstand der vorliegenden     Frfindung     ist ein Verfahren zur Darstellung eines Baum-         wollfarbstoffes    der folgenden Konstitutions  formel  
EMI0001.0005     
    dadurch     gekennzeichnet,    dass man den Mono  azofarbstoff aus 1     Mol        4-Nitraciilin-2-sulfo-          säure    und 1     Mol        Acetessig-o-cliloranilid        sul-          furiert,

      die Nitroverbindung zur entsprechen  den     Aminoverbindung    durch     Behandlung    mit    reduzierenden Mitteln reduziert und die     Amino-          verbindung    mit     Phosgen    behandelt bis zur  Bildung des     Harnstoffderivates.     



  <I>Beispiel:</I>  440 Gewichtsteile des     Norioazofarbstoffes         aus     4-Nitranilin-2-sulfosäure    und     Aeetessig-          o-chloranilid    werden in 4000 Gewichtsteilen       Schwefelsäuremorrohydrat    unter Eiskühlung  gelöst. Darauf gibt man 400 Gewichtsteile       Oleum    von<B>65</B> o%     Anhydridgehalt    hinzu und  rührt bei     30-40Ö,    bis die     Sulfierung    be  endet ist. Das     Sulfierungsgemisch    wird dann  auf Eis gegossen, abgesaugt und mit Wasser  gewaschen.

   Dann löst man den     Farbstoff    in  Soda und reduziert die Nitrogruppe in be  kannter Weise mit Schwefelnatrium zur         Aminogruppe    und stellt aus dem     Aminoazo-          farbstoff    durch Behandlung mit     Phosgen    den  Harnstoff dar. Der fertige     Farbstoff    wird  dann abgesaugt und getrocknet; er stellt ein  gelbes Pulver dar, das Baumwolle und Kunst  seide gelb anfärbt mit guten Echtheitseigen  schaften.



      \ 'Learn about the representation of a cotton wool dye. The subject matter of the present invention is a process for the preparation of a cotton dye of the following constitutional formula
EMI0001.0005
    characterized in that the mono azo dye is sulphurated from 1 mol of 4-nitrilin-2-sulphonic acid and 1 mol of acetoacetic-o-cliloranilide,

      the nitro compound is reduced to the corresponding amino compound by treatment with reducing agents and the amino compound is treated with phosgene until the urea derivative is formed.



  <I> Example: </I> 440 parts by weight of the norioazo dye from 4-nitroaniline-2-sulfonic acid and ethylacetate-o-chloroanilide are dissolved in 4000 parts by weight of sulfuric acid morphohydrate with ice cooling. 400 parts by weight of oleum with 65% anhydride content are then added and the mixture is stirred at 30-40 ° until the sulfonation has ended. The sulphonation mixture is then poured onto ice, filtered off with suction and washed with water.

   The dye is then dissolved in soda and the nitro group is reduced to the amino group in a known manner with sodium sulphide and the urea is produced from the aminoazo dye by treatment with phosgene. The finished dye is then filtered off with suction and dried; it is a yellow powder that dyes cotton and artificial silk yellow with good fastness properties.

Claims (1)

<B>PATENTANSPRUCH</B> Verfahren zur Darstellung eines Baum- wollfarbstoffes der folgenden Konstitutions formel EMI0002.0018 dadurch gekennzeichnet, dass man den Mo ö azofarbstoff aus 1 Mol 4-Nitranilin-2-sulfo- säure und 1 Mol Acetessig-o-chlorarrilid sul- furiert, <B> PATENT CLAIM </B> Process for the preparation of a cotton dye with the following constitutional formula EMI0002.0018 characterized in that the mozzo dye is sulphurated from 1 mol of 4-nitroaniline-2-sulphonic acid and 1 mol of acetoacetic-o-chlorarrilide, die Nitroverbindung zur entsprechen den Aminoverbindung durch Behandlung mit reduzierenden Mitteln reduziert und die Amino- verbindung mit Phosgen behandelt bis zur Bildung des Harnstoffderivates. Der Farbstoff stellt als Natriumsalz ein gelbes Pulver dar, das Baumwolle und Kunst seide gelb anfärbt mit guten Echtheitseigen schaften. the nitro compound is reduced to the corresponding amino compound by treatment with reducing agents and the amino compound is treated with phosgene until the urea derivative is formed. The sodium salt of the dye is a yellow powder that dyes cotton and artificial silk yellow with good fastness properties.
CH140101D 1927-02-28 1928-02-23 Process for the preparation of a cotton dye. CH140101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE140101X 1927-02-28

Publications (1)

Publication Number Publication Date
CH140101A true CH140101A (en) 1930-05-31

Family

ID=5668067

Family Applications (1)

Application Number Title Priority Date Filing Date
CH140101D CH140101A (en) 1927-02-28 1928-02-23 Process for the preparation of a cotton dye.

Country Status (1)

Country Link
CH (1) CH140101A (en)

Similar Documents

Publication Publication Date Title
CH140101A (en) Process for the preparation of a cotton dye.
DE445390C (en) Process for the production of dinaphthyldicarboxylic acids
CH131503A (en) Process for the production of a new chromium-containing azo dye.
CH175881A (en) Process for the preparation of a substantive copper-containing azo dye.
CH249795A (en) Process for the preparation of a substantive azo dye.
CH146752A (en) Process for the production of a new azo dye.
CH115112A (en) Process for the preparation of a bis (2,3-oxynaphtoyl) diamino body.
CH175882A (en) Process for the preparation of a substantive copper-containing azo dye.
CH267859A (en) Process for the production of a new azo dye.
CH137651A (en) Process for the preparation of an azo dye.
CH146767A (en) Process for the production of a new azo dye.
CH306544A (en) Process for the preparation of a metal-containing azo dye.
CH175885A (en) Process for the preparation of a substantive copper-containing azo dye.
CH293620A (en) Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye.
CH146754A (en) Process for the production of a new azo dye.
CH131261A (en) Process for the production of a new dye.
CH309182A (en) Process for the preparation of a cobalt-containing monoazo dye.
CH137951A (en) Process for the preparation of a basic azo dye.
CH138227A (en) Process for the production of a new azo dye.
CH217963A (en) Process for the preparation of a polyazo dye.
CH138206A (en) Process for the production of a new azo dye.
CH394439A (en) Process for the preparation of dyes containing reactive groups
CH257405A (en) Process for the production of a new vat dye.
CH293617A (en) Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye.
CH146760A (en) Process for the production of a new azo dye.