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Oliver Imray
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
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Abstract
16,957. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³ning]. Aug. 23. o-p-Diamidophenol-o-sulphonic acid is produced by reducing o-p-dinitrophenol-o-sulphonic acid with the usual reducing-agents, for example, tin and hydrochloric acid. Dyes, artificial.-The foregoing diamidophenol sulphonic acid may be used for the manufacture of diazo dyes. For example, it is converted into its tetrazo compound, and this is combined with two molecular proportions of #-naphthol. The product is sparingly soluble, and dyes wool brown shades which become black on subsequent treatment with bichromate.
GB190116957D1901-08-231901-08-23Manufacture of Disazo-dyestuffs for Wool and an Intermediate Product.
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