GB191015646A - The Manufacture of Azo Dyestuffs from Aminophenyl Naphthimidazole Oxysulphonic Acid. - Google Patents

The Manufacture of Azo Dyestuffs from Aminophenyl Naphthimidazole Oxysulphonic Acid.

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Publication number
GB191015646A
GB191015646A GB191015646DA GB191015646A GB 191015646 A GB191015646 A GB 191015646A GB 191015646D A GB191015646D A GB 191015646DA GB 191015646 A GB191015646 A GB 191015646A
Authority
GB
United Kingdom
Prior art keywords
acid
sulphonic acid
naphthiminazole
naphthol
diazotized
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
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Inventor
Robert Bolton Ransford
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191015646A publication Critical patent/GB191015646A/en
Expired legal-status Critical Current

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

15,646. Ransford, R. B., [Cassella & Co., L.]. June 29. m-Aminophenyl-1 : 2-naphthiminazole - 3 - oxy - 6- sulphonic acid is obtained by condensing m-aminobenzaldehyde bisulphite with 1 : 2-diamino-3- naphthol-6-sulphonic acid ; the latter compound is obtained by reducing azo dyes obtained in acid solution from 2-amino-3-naphthol-6-sulphonic acid. Azo dyes are obtained by combining diazo, diazoazo, or tetrazo compounds with the abovedescribed naphthiminazole. These dyes may be diazotized in substance or on the fibre and combined with suitable components. According to examples :-(1) the naphthiminazole is combined with the diazo compounds of aniline, o-, m-, or p-toluidine, m- or p-xylidine, acet-m-phenylenediamine or aminoazobenzene sulphonic acid, or the tetrazo compounds of azoxyaniline, p-p<1>-diaminophecolether-o-sulphonic acid, 2 : 7-naphthylenediamine-3 : 6-disulphonic acid, or m-m'-diaminodiphenylurea ; these dyes may be diazotized on the fibre and developed with #-naphthol ; (2) diazotized sulphanilic acid is combined with the naphthiminazole, the product is rediazotized and combined with the same naphthiminazole or with m-aminophenyl-1 2-naphthiminazole-5-oxy-7-sulphonic acid ; p-xylidine, 2-amino- 5-naphthol-7-sulphonic acid, and aminobenzoyl-2- amino-5-naphthol-7-sulphonic acid are also specified as acid components ; these dyes may be diazotized on the fibre and developed with #-naphthol ; (3) the dye obtained from diazotized aniline and the naphthiminazole is rediazotized and combined with 2-naphthol-6-sulphonic acid, resorcin, or m-aminophenol. Reference has been directed by the Comptroller to Specifications 1675/05, 21,175/05, 12,421/06, and 6814/07.
GB191015646D 1910-06-29 1910-06-29 The Manufacture of Azo Dyestuffs from Aminophenyl Naphthimidazole Oxysulphonic Acid. Expired GB191015646A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191015646T 1910-06-29

Publications (1)

Publication Number Publication Date
GB191015646A true GB191015646A (en) 1911-06-29

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Family Applications (1)

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GB191015646D Expired GB191015646A (en) 1910-06-29 1910-06-29 The Manufacture of Azo Dyestuffs from Aminophenyl Naphthimidazole Oxysulphonic Acid.

Country Status (1)

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GB (1) GB191015646A (en)

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