CH178432A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH178432A
CH178432A CH178432DA CH178432A CH 178432 A CH178432 A CH 178432A CH 178432D A CH178432D A CH 178432DA CH 178432 A CH178432 A CH 178432A
Authority
CH
Switzerland
Prior art keywords
dye
carbonamide
amino
cyclohexylanilino
preparation
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 CH178432A publication Critical patent/CH178432A/en

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  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines Farbstoffes.    Das Hauptpatent     betrifft    ein Verfahren  zur Herstellung eines Farbstoffes, bei dem       1-Amino-4-    (p -     tolrridi        rio)-        anthrachir)on-2-car-          bonamid    so lange mit einem sulfonierend  wirkenden Mittel behandelt wird, bis das  Reaktionsprodukt eben völlig wasserlöslich  geworden ist.  



  Es wurde nun gefunden, dass man einen  ähnlich wertvoller)     Farbstoff    erhält, wenn  man     1-Amino-4-(p-cyclohexylanilino)-anthra-          chinon-2-carbonarnid    so lange mit einem     sul-          fonierend    wirkenden Mittel behandelt, bis  das Reaktionsprodukt eben völlig wasserlös  lich geworden ist.  



  Der erhaltene Farbstoff, eine     Sulfonsäure     des     1-Amino-4-(p-cyclohexylanilino)-anthra-          chinon-2-carbonamids,    färbt Wolle aus saurem  Bade in klaren     grünstichig    blauen Tönen.  



  <I>Beispiel</I>  10 Teile     1-Amirro-4-(p-cyclohegylanilino)-          anthrachinon-2-carbonarnid    werden in 100  Teilen     Schwefelsäuremonobydrat    gelöst, wor  auf bei Zimmertemperatur so lange rauchende         Schwefelsäure;        enthaltend        23%        SOs,        zuge-          geben    wird, bis eine entnommene und auf  gearbeitete Probe erkennen lässt, dass das  Reaktionsprodukt eben völlig wasserlöslich  geworden ist. Darauf giesst man das Reak  tionsgemisch in Eiswasser und salzt den  entstandenen Farbstoff in der üblichen Weise  aus.



  Process for the preparation of a dye. The main patent relates to a process for the preparation of a dye in which 1-amino-4- (p - tolrridi rio) - anthrachir) one-2-carbonamide is treated with a sulfonating agent until the reaction product is completely water-soluble has become.



  It has now been found that a similarly valuable dye is obtained if 1-amino-4- (p-cyclohexylanilino) anthraquinone-2-carbonamide is treated with a sulphonizing agent until the reaction product is just has become completely soluble in water.



  The dye obtained, a sulfonic acid of 1-amino-4- (p-cyclohexylanilino) -anthraquinone-2-carbonamide, dyes wool from an acid bath in clear greenish blue tones.



  <I> Example </I> 10 parts of 1-Amirro-4- (p-cyclohegylanilino) -anthraquinone-2-carbonamide are dissolved in 100 parts of sulfuric acid monobydrate, whereupon sulfuric acid fuming for so long at room temperature; containing 23% SO2, is added until a sample taken and processed shows that the reaction product has just become completely water-soluble. The reaction mixture is then poured into ice water and the resulting dye is salted out in the usual way.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes, dadurch gekennzeichnet, dass man 1-Amino - 4 - (p - cyclohexylanilino) - anthrachi- non-2-carbonamid so lange mit einem sulfo- nierend wirkenden Mittel behandelt, bis das Reaktionsprodukt eben völlig wasserlöslich geworden ist. Der erhaltene Farbstoff, eine Sulfonsäure des 1-Amiuo-4-(p-cyclohexylanilino)-antbra- chinon-2-carbonamids, färbt Wolle aus saurem Bade in klaren grünatichig blauen Tönen. PATENT CLAIM: Process for the production of a dye, characterized in that 1-amino-4- (p-cyclohexylanilino) -anthraquinone-2-carbonamide is treated with a sulfonating agent until the reaction product is completely water-soluble has become. The dye obtained, a sulfonic acid of 1-amino-4- (p-cyclohexylanilino) -antbraquinone-2-carbonamide, dyes wool from an acid bath in clear greenish blue tones.
CH178432D 1933-01-21 1933-12-20 Process for the preparation of a dye. CH178432A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE178432X 1933-01-21
CH174083T 1933-12-20

Publications (1)

Publication Number Publication Date
CH178432A true CH178432A (en) 1935-07-15

Family

ID=25719470

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178432D CH178432A (en) 1933-01-21 1933-12-20 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH178432A (en)

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