GB164218A - Manufacture of new azodyes - Google Patents

Manufacture of new azodyes

Info

Publication number
GB164218A
GB164218A GB1263920A GB1263920A GB164218A GB 164218 A GB164218 A GB 164218A GB 1263920 A GB1263920 A GB 1263920A GB 1263920 A GB1263920 A GB 1263920A GB 164218 A GB164218 A GB 164218A
Authority
GB
United Kingdom
Prior art keywords
nitraniline
sulphonic acid
naphthylamine
naphthol
acid
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1263920A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Priority to GB1263920A priority Critical patent/GB164218A/en
Publication of GB164218A publication Critical patent/GB164218A/en
Expired legal-status Critical Current

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

Abstract

Monoazo dyes are obtained by coupling 4 - nitraniline - 2 - sulphonamide, in which one or both hydrogen atoms of the sulphonamide group are replaced by alkyl, aryl, or aralkyl) with a 2 - naphthylamine sulphonic acid or a 2 - amino - 8 - naphthol sulphonic acid, or a derivative thereof, in acid solution. As diazo components are mentioned 4 - nitraniline - 2 - sulphoethylanilide, 4 - nitraniline - 2 - sulphanilide, 4 - nitraniline - 2 - sulphodiphenylamide, 4 - nitraniline - 2 - sulphomethylanilide, 4 - nitraniline - 2 - sulphomethylamide, 4 - nitraniline - 2 - sulphomethyl - o-toluidide, 4 - nitraniline - 2 - sulphopiperidide; as second components, 2 - amino - 8 - naphthol - 6 - sulphonic acid, 2 - methylamino - 8 - naphthol - 6 - sulphonic acid, 2 - naphthylamine - 8 - sulphonic acid, 2 - naphthylamine - 6 : 8 - disulphonic acid, o-anisyl-2-naphthylamine-8-sulphonic acid. The products may be reduced with alkaline reducing agents. According to one example, diazotized 4 - nitraniline - 2 - sulphoethylanilide is coupled with 2 - amino - 8 - naphthol - 6 - sulphonic acid in glacial acetic acid solution yielding a navy-blue wool dye; in a second example the solution obtained by effecting the same combination in weak mineral acid solution is reduced by sodium sulphide giving a bluish wool dye. 4 - Nitraniline - 2 - sulphonamides, substituted in the sulphonamide group, are obtained by treating 4 - nitro - 1 - chlorobenzene - 2 - sulphonic chloride with an amine and replacing the chlorine atom in the 1 - position by -NH2 in the usual manner. o - Anisyl - 2 - naphthylamine - 8 - sulphonic acid is obtained in the manner described in Specifications 7337A/92 and 18726/00 from 2 - naphthylamine - 8 - sulphonic acid or 2 - naphthol - 8 - sulphonic acid and o - anisidine.
GB1263920A 1920-05-06 1920-05-06 Manufacture of new azodyes Expired GB164218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1263920A GB164218A (en) 1920-05-06 1920-05-06 Manufacture of new azodyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1263920A GB164218A (en) 1920-05-06 1920-05-06 Manufacture of new azodyes

Publications (1)

Publication Number Publication Date
GB164218A true GB164218A (en) 1921-06-09

Family

ID=10008400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1263920A Expired GB164218A (en) 1920-05-06 1920-05-06 Manufacture of new azodyes

Country Status (1)

Country Link
GB (1) GB164218A (en)

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