CH145890A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

Info

Publication number
CH145890A
CH145890A CH145890DA CH145890A CH 145890 A CH145890 A CH 145890A CH 145890D A CH145890D A CH 145890DA CH 145890 A CH145890 A CH 145890A
Authority
CH
Switzerland
Prior art keywords
preparation
vat dye
dye
vat
orange
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 CH145890A publication Critical patent/CH145890A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Küpenfarbstofies.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines     Küpenfarbstoffes,     welches dadurch gekennzeichnet ist,. dass man  das Umsetzungsprodukt aus     Monobrornisodi-          berizpyrerichinon    und     Anthranilsäure    mit einem  sauren Kondensationsmittel erhitzt.  



  <I>Beispiel:</I>  Man erwärmt die grüne Lösung des Um  setzungsproduktes aus     1VIonobromisodibenz-          pyrenchinon    und     Anthranilsäure    in konzen  trierter Schwefelsäure kurze Zeit auf 90 bis  100  . Hierbei schlägt die Lösungsfarbe nach  braun um. Beim Eingiessen in Wasser fällt  ein Farbstoff aus, der aus orangefarbener       Küpe    braunorange Färbungen liefert.



  Process for the preparation of a vat dye. The subject of this patent is a process for the preparation of a vat dye, which is characterized. that the reaction product of Monobrornisodiberizpyrerichinon and anthranilic acid is heated with an acidic condensing agent.



  <I> Example: </I> The green solution of the reaction product of 1Vionobromoisodibenzepyrenquinone and anthranilic acid in concentrated sulfuric acid is heated to 90 to 100 for a short time. The color of the solution changes to brown. When pouring into water, a dye precipitates which, from an orange vat, gives brown-orange colorations.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man das Umsetzungsprodukt aus 1llonobromisodi- benzpyrenchirioir und Anthranilsäure mit einem sauren Kondensationsmittel erhitzt. Der so erhaltene Farbstoff liefert aus orangefarbener Küpe braunorange Färbungen. UNTERANSPRüCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man konzentrierte Schwofelsäure als Kondensationsmittel verwendet. 2. PATENT CLAIM: Process for the preparation of a vat dye, characterized in that the reaction product of 1llonobromisodibenzpyrenchirioir and anthranilic acid is heated with an acidic condensing agent. The dye thus obtained gives brown-orange colorations from an orange vat. SUBClaims 1. Process according to patent claim, characterized in that concentrated sulfuric acid is used as the condensing agent. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktion bei <B>90-1000 0</B> ausführt. Process according to patent claim, characterized in that the reaction is carried out at <B> 90-1000 0 </B>.
CH145890D 1928-03-23 1929-03-04 Process for the preparation of a vat dye. CH145890A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE145890X 1928-03-23
CH142159T 1929-03-04

Publications (1)

Publication Number Publication Date
CH145890A true CH145890A (en) 1931-03-15

Family

ID=25714004

Family Applications (1)

Application Number Title Priority Date Filing Date
CH145890D CH145890A (en) 1928-03-23 1929-03-04 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH145890A (en)

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