CH190338A - Process for the preparation of a quinophthalone sulfonic acid. - Google Patents

Process for the preparation of a quinophthalone sulfonic acid.

Info

Publication number
CH190338A
CH190338A CH190338DA CH190338A CH 190338 A CH190338 A CH 190338A CH 190338D A CH190338D A CH 190338DA CH 190338 A CH190338 A CH 190338A
Authority
CH
Switzerland
Prior art keywords
quinophthalone
sulfonic acid
preparation
heated
equivalent amount
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 CH190338A publication Critical patent/CH190338A/en

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

Description

  

  Verfahren zur Herstellung einer     Chinophthalonsulfosäure.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung einer     Chinophtha-          lonsulfosäure,    welches dadurch gekennzeich  net ist, dass man     Chinophthalon    mit der     äqui-.          valenten    Menge eines     Sulfierungsmittels    er  hitzt.  



  <I>Beispiel:</I>  27,2 Gewichtsteile     Chinophthalon    werden  mit 15 Gewichtsteilen     ll,lonohydrat    zusammen  verrieben. Dabei bildet sich unter schwacher       spontaner    Erwärmung ,das Sulfat des     Chino-          phthalons,    welches schnell zu einer festen,  roten, kristallinen Masse erstarrt. Diese wird  bei einem Druck von 2 bis 3 mm     Hg    4 Stun  den lang auf<B>190'</B> C erwärmt. Dabei wird  die anfangs ziemlich     diinnflüssige    und bla  sige Schmelze immer zäher. Nach dem Er  kalten wird die erstarrte Masse gepulvert  und mit heissem     )Vasser    aufgekocht und so  in Lösung gebracht.

   Die heisse     Flüssigkeit     wird durch Filtration geklärt. Durch Aus  sahen mit Kochsalz erhält man aus dem Fil  trat die     Chinophthalonsulfosäure    in guter  Ausbeute. Sie bildet ein hellgelbes, in Was-         ser    lösliches Pulver, das Wolle gut egalisie  rend in gelben Tönen aus saurem Bade färbt.



  Process for the preparation of a quinophthalone sulfonic acid. The subject of this additional patent is a process for the preparation of a quinophthalone sulfonic acid, which is characterized in that one quinophthalone with the equi-. equivalent amount of a sulfonating agent he heats.



  <I> Example: </I> 27.2 parts by weight of quinophthalone are triturated together with 15 parts by weight of II ionohydrate. The sulfate of quinophthalone is formed with weak spontaneous heating, which quickly solidifies to a solid, red, crystalline mass. This is heated to <B> 190 '</B> C for 4 hours at a pressure of 2 to 3 mm Hg. The initially rather thin and pale melt becomes increasingly viscous. After it has cooled down, the solidified mass is powdered and boiled with hot water to dissolve it.

   The hot liquid is clarified by filtration. By looking with common salt, the quinophthalone sulfonic acid is obtained from the fil in good yield. It forms a light yellow, water-soluble powder that dyes wool in yellow shades from acidic baths, smoothly and evenly.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Chino- phthalonsulfosäure, dadurch gekennzeichnet, dass man Chinophthalon mit der äquivalenten Menge eines Sulfierungsmittels erhitzt. Die so erhaltene Chinophthalonsulfosäure bildet ein hellgelbes, in Nasser lösliches Pul ver, das Wolle gut egalisierend in gelben Tönen aus saurem Bade färbt. PATENT CLAIM: Process for the preparation of a quinophthalone sulfonic acid, characterized in that quinophthalone is heated with the equivalent amount of a sulfonating agent. The quinophthalone sulfonic acid obtained in this way forms a pale yellow powder which is soluble in water and which dyes wool in yellow shades from acidic baths in a well-leveling manner. TJNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Chinophthalon mit der äquivalenten Menge Schwefelsäuremono- hydrat verreibt und das so gebildete Sulfat des Chinophthalons unter einem Druck von 2 bis 3 mm Quecksilber 4 .Stunden lang auf <B>190'</B> C erwärmt. Claim: Process according to claim, characterized in that quinophthalone is triturated with the equivalent amount of sulfuric acid monohydrate and the quinophthalone sulfate thus formed is kept at <B> 190 '</B> for 4 hours under a pressure of 2 to 3 mm of mercury C heated.
CH190338D 1934-08-09 1935-08-08 Process for the preparation of a quinophthalone sulfonic acid. CH190338A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE185959X 1934-08-09
CH185959T 1935-08-08

Publications (1)

Publication Number Publication Date
CH190338A true CH190338A (en) 1937-04-15

Family

ID=25721327

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190338D CH190338A (en) 1934-08-09 1935-08-08 Process for the preparation of a quinophthalone sulfonic acid.

Country Status (1)

Country Link
CH (1) CH190338A (en)

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