GB190117356A - The Manufacture and Production of New Azo Colouring Matters and Materials for use therein. - Google Patents

The Manufacture and Production of New Azo Colouring Matters and Materials for use therein.

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Publication number
GB190117356A
GB190117356A GB190117356DA GB190117356A GB 190117356 A GB190117356 A GB 190117356A GB 190117356D A GB190117356D A GB 190117356DA GB 190117356 A GB190117356 A GB 190117356A
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GB
United Kingdom
Prior art keywords
acid
produced
chlor
acting
combining
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
Inventor
James Yate Johnson
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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 GB190117356A publication Critical patent/GB190117356A/en
Expired legal-status Critical Current

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Abstract

17,356. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. Aug. 29. p-Chlor-salicylic acid is produced by acting with chlorine upon salicylic acid suspended in nitrobenzene, and then extracting with soda solution and precipitating by hydrochloric acid. p-Chlor-o-nitrosalicylic acid is produced by acting upon a solution of p-chlorsalicylic acid in sulphuric acid with the calculated quantity of nitric acid at or below 0‹ C., and, after stirring some hours, pouring the mixture on ice. p-Chlor-o-amidosalicylic acid is produced by reducing the foregoing nitro product, preferably by means of sodium bisulphite. Uther reducing- agents, such as iron and acetic acid, may be used. Dyes, artificial.-A disazo dye, which yields violet black shades on silk and wool, and a fast deep black with a superficial blue shade on further treatment of the dyed goods with sodium bichromate, is produced by first combining the diazo compound of the foregoing chloramidosalicylic acid with 1 : 6- or 1 : 7-alpha-naphthylamine sulpbonic acid, and then rediazotizing the monoazo product and combining it with #-naphthol.
GB190117356D 1901-08-29 1901-08-29 The Manufacture and Production of New Azo Colouring Matters and Materials for use therein. Expired GB190117356A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190117356T 1901-08-29

Publications (1)

Publication Number Publication Date
GB190117356A true GB190117356A (en) 1902-06-19

Family

ID=32424713

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190117356D Expired GB190117356A (en) 1901-08-29 1901-08-29 The Manufacture and Production of New Azo Colouring Matters and Materials for use therein.

Country Status (1)

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GB (1) GB190117356A (en)

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