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Expired
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Inventor
Denton Abel Charles
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Agfa Gevaert NV
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Aktiengesellschaft fuer Anilinfabrikation GmbH
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Application filed by Aktiengesellschaft fuer Anilinfabrikation GmbHfiledCriticalAktiengesellschaft fuer Anilinfabrikation GmbH
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Publication of GB190311003ApublicationCriticalpatent/GB190311003A/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
11,003. Abel, C. D., [Akt.-Ges. f³r Anilin Fabrikation]. May 14. Dyes, artificial.-Sulphurized dyes, which dye cotton bright-green tints of great fastness, are produced by boiling an aqueous solution of alkalipolysulphide, or sodium sulphide and sulphur, in the presence of copper sulphate or other salt, with indophenols of which the simplest is that derived from p-amidophenol and #-naphthylamine. The indophenols derived from homologues of p-amidophenol, or o-chlor-p-amidophenol and alpha-naphthylamine or alpha-naphthylamine sulphonic acids having no sulphonic acid group in the para position to the amido group, may be used. The dye obtained from the simplest indophenol is a dark-green powder insoluble in water, easily soluble in alkali sulphides, and slightly soluble in caustic alkalies to greenish solutions and in concentrated sulphuric acid to a bluish solution. The leuco compounds of the indophenols may be used.
GB190311003D1903-05-141903-05-14Manufacture of New Green Sulphurised Colouring Matters.
ExpiredGB190311003A
(en)
Manufacture of Condensation Products from Nitroso-oxy-compounds or Quinone Chlorimides and Aromatic Amines, or Leucoindophenols therefrom, and of Sulphurised Dyestuffs derived from the said Condensation Products and Leucoindophenols.