CH180297A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH180297A
CH180297A CH180297DA CH180297A CH 180297 A CH180297 A CH 180297A CH 180297D A CH180297D A CH 180297DA CH 180297 A CH180297 A CH 180297A
Authority
CH
Switzerland
Prior art keywords
new dye
production
blue
amino
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH180297A publication Critical patent/CH180297A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 178224.    Verfahren zur Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass man einen neuen  Farbstoff erhält, wenn man     diazotiertes          2-Amino-5-nitrophenyläthylsulfon-    in saurem  Medium mit der     2-Amino-@8-oxynaphthalin-6-          sulfonsäure    vereinigt. Der neue Farbstoff  bildet ein blaues Pulver, das sich in Wasser  mit blauvioletter Farbe löst. Es färbt Wolle  aus saurem Bade in echten blaustichig violet  ten Farbtönen an.  



  <I>Beispiel:</I>  230 Teile     2-Amino-5-nitrophenyläthylsul-          fon    werden in konzentrierter Schwefelsäure  mit 69 Teilen     Natriumnitrit        diazotiert    und  die Lösung in Eiswasser gegossen. In diese       Diazolösung    trägt man eine neutrale Lösung  von 239 Teilen 2-Amino-8-oxynaphthalin-6-         sulfonsäure    ein und beschleunigt die Reak  tion gegebenenfalls durch Zugabe von Na  triumacetat. Der Farbstoff wird nun ab  filtriert, ausgewaschen und getrocknet.



  <B> Additional patent </B> to main patent no. 178224. Process for the production of a new dye. It has been found that a new dye is obtained if diazotized 2-amino-5-nitrophenylethylsulfonic acid is combined with 2-amino- @ 8-oxynaphthalene-6-sulfonic acid in an acidic medium. The new dye forms a blue powder that dissolves in water with a blue-purple color. It stains wool from an acid bath in real blue-tinged violet shades.



  <I> Example: </I> 230 parts of 2-amino-5-nitrophenylethylsulfon are diazotized in concentrated sulfuric acid with 69 parts of sodium nitrite and the solution is poured into ice water. A neutral solution of 239 parts of 2-amino-8-oxynaphthalene-6-sulfonic acid is introduced into this diazo solution and the reaction is accelerated, if necessary by adding sodium acetate. The dye is then filtered off, washed out and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man diazotiertes 2-Amino-5-nitrophenyläthyl- sulfon in saurem Medium mit der 2-Amino- 8-oxynaphthalin-6-sulfonsäure vereinigt. Der neue Farbstoff bildet ein blaues Pulver, das sich in Wasser mit blauvioletter Farbe löst. Es färbt Wolle aus saurem Bade in echten blaustichig violetten Farbtönen an. PATENT CLAIM: Process for the production of a new dye, characterized in that diazotized 2-amino-5-nitrophenylethyl sulfone is combined with 2-amino-8-oxynaphthalene-6-sulfonic acid in an acid medium. The new dye forms a blue powder that dissolves in water with a blue-purple color. It stains wool from an acid bath in real blue-tinged violet shades.
CH180297D 1934-03-24 1934-03-24 Process for the production of a new dye. CH180297A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH178224T 1934-03-24
CH180297T 1934-03-24

Publications (1)

Publication Number Publication Date
CH180297A true CH180297A (en) 1935-10-15

Family

ID=25720091

Family Applications (1)

Application Number Title Priority Date Filing Date
CH180297D CH180297A (en) 1934-03-24 1934-03-24 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH180297A (en)

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