CH183896A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

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Publication number
CH183896A
CH183896A CH183896DA CH183896A CH 183896 A CH183896 A CH 183896A CH 183896D A CH183896D A CH 183896DA CH 183896 A CH183896 A CH 183896A
Authority
CH
Switzerland
Prior art keywords
dye
amino
anthraquinone
cyano
soluble
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 CH183896A publication Critical patent/CH183896A/en

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Description

  

  Verfahren zur Herstellung eines     Farbstores.       Das Hauptpatent betrifft ein Verfahren  zur Herstellung eines wertvollen Farbstoffes,  bei dem     1-Amirro-2-cyarr-(p-toluidirio)-antlrra-          chinon    so lange mit einem     sulfonierend    wir  kenden Mittel behandelt wird, bis das     Reak-          tionsproduktebenvöllig    wasserlöslich geworden  ist, worauf die     Cyangruppe    zur     Carbonamid-          gruppe    verseift wird.  



  Es wurde nun gefunden, dass man einen  ähnlich wertvollen Farbstoff erhält, wenn  man     1-Amino-2-cyari-4-(p-cyclohexylarrilirro)-          anthrachinon    so lange mit einem sulfonierend  wirkenden Mittel behandelt, bis das Reak  tionsprodukt eben völlig wasserlöslich ge  worden ist und sodann die     Cyangruppe    zur       Carbonamidgruppe    verseift.  



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



  <I>Beispiel:</I>  10 Teile     1-Amirro-2-cyarr-4-(p-cyclohexyl-          anilino)-anthrachinon,    erhältlich zum Beispiel    aus     1-Amino-2-cyan-4-bromanthrachinon    und       p-Cyclobegylanilin,    werden in 100 Teilen       Schwefelsäurernonohydrat    gelöst und so lange  mit rauchender Schwefelsäure, enthaltend       23        %        SOs,        versetzt,        bis        eine        entnommene     und aufgearbeitete Probe erkennen lässt, dass  das Reaktionsprodukt eben völlig wasserlös  lich geworden ist.

   Man gibt sodann zu dem  Reaktionsgemisch so viel kristallisierte     Bor-          säure,        dass        das        Sulfierungsgemisch        etwa    5     %     davon enthält, und rührt so lange bei Zim  mertemperatur, bis die     Cyangruppe'vollstän-          dig    in die     Carbonamidgruppe    übergeführt ist.  Darauf giesst man das Reaktionsgemisch in  Eiswasser und salzt den     Farbstoff    in der  üblichen Weise aus.



  Process for the production of a color blind. The main patent relates to a process for the production of a valuable dye in which 1-Amirro-2-cyarr- (p-toluidirio) -antlrraquinone is treated with a sulfonating agent until the reaction product has become completely water-soluble, whereupon the cyano group is saponified to form the carbonamide group.



  It has now been found that a similarly valuable dye is obtained if 1-amino-2-cyari-4- (p-cyclohexylarrilirro) - anthraquinone is treated with a sulfonating agent until the reaction product has just become completely water-soluble and then the cyano group is saponified to form the carbonamide group.



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



  <I> Example: </I> 10 parts of 1-amirro-2-cyarr-4- (p-cyclohexyl-anilino) -anthraquinone, obtainable, for example, from 1-amino-2-cyano-4-bromoanthraquinone and p-cyclobegylaniline , are dissolved in 100 parts of sulfuric acid monohydrate and fuming sulfuric acid containing 23% SO2 is added until a sample taken and processed shows that the reaction product has just become completely water-soluble.

   Sufficient crystallized boric acid is then added to the reaction mixture so that the sulphonation mixture contains about 5% of it, and the mixture is stirred at room temperature until the cyano group has been completely converted into the carbonamide group. The reaction mixture is then poured into ice water and the dye is salted out in the usual way.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes, dadurch gekennzeichnet, dass man 1 Amino-2-cyan-4-(p-cyclohegylanilino)- anthra- chinon so lange mit einem sulfonierend wir kenden Mittel behandelt, bis das Reaktions- produkt eben völlig wasserlöslich geworden ist und sodann die Cyangruppe zur Carbon- amidgruppe verseift. PATENT CLAIM: Process for the production of a dye, characterized in that 1 amino-2-cyano-4- (p-cyclohegylanilino) anthraquinone is treated with a sulfonating agent until the reaction product is completely water-soluble has become and then saponified the cyano group to form the carbonamide group. Der erhaltene Farbstoff, eine Sulfonsäure des 1-Amino-4-(p-cyclohexylanilino)-anthra- chinon-2-carboiiamids, färbt Wolle aus saurem Bade in klaren grünsticbig blauen Tönen. The dye obtained, a sulfonic acid of 1-amino-4- (p-cyclohexylanilino) -anthraquinone-2-carboiamide, dyes wool from an acid bath in clear greenish-blue tones.
CH183896D 1933-01-21 1933-12-20 Process for the preparation of a dye. CH183896A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE183896X 1933-01-21
CH178227T 1933-12-20

Publications (1)

Publication Number Publication Date
CH183896A true CH183896A (en) 1936-04-30

Family

ID=25720103

Family Applications (1)

Application Number Title Priority Date Filing Date
CH183896D CH183896A (en) 1933-01-21 1933-12-20 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH183896A (en)

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