GB190116811A - Improvements in the Manufacture of Azo Colouring Matters and the Production of New Matter for Use therein. - Google Patents

Improvements in the Manufacture of Azo Colouring Matters and the Production of New Matter for Use therein.

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Publication number
GB190116811A
GB190116811A GB190116811DA GB190116811A GB 190116811 A GB190116811 A GB 190116811A GB 190116811D A GB190116811D A GB 190116811DA GB 190116811 A GB190116811 A GB 190116811A
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GB
United Kingdom
Prior art keywords
dyes
sulphonic
sulphonic acid
diamidochlorobenzene
naphthol
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
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190116811A publication Critical patent/GB190116811A/en
Expired legal-status Critical Current

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Abstract

16,811. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. Aug. 21. Diamidochlorobenzene sulphonic acid [Cl : NH2 : SO3H : NH2 = 1 : 2 : 4 : 6] is produced by reducing the corresponding dinitro compound with, for example, tin and hydrochloric acid. Dyes, artificial.-Disazo dyes are produced by diazotizing the foregoing diamidochlorobenzene sulphonic acid, making the tetrazo product alkaline, and combining it with two molecular proportions of the same dye-stuff component, or with one molecular proportion of each of two different components. In this process the chlorine atom becomes replaced by the hydroxyl group, so that the dyes have the properties of the known dyes derived from m-diamidophenol sulphonic acid. #-Naphthol, dihydroxynaphthalenes, naphthol sulphonic and carboxylic acids, and amidonaphthol sulphonic acids are mentioned as suitable components.
GB190116811D 1901-08-21 1901-08-21 Improvements in the Manufacture of Azo Colouring Matters and the Production of New Matter for Use therein. Expired GB190116811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190116811T 1901-08-21

Publications (1)

Publication Number Publication Date
GB190116811A true GB190116811A (en) 1902-06-19

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ID=32424416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190116811D Expired GB190116811A (en) 1901-08-21 1901-08-21 Improvements in the Manufacture of Azo Colouring Matters and the Production of New Matter for Use therein.

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GB (1) GB190116811A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729630A (en) * 1950-11-02 1956-01-03 Basf Ag Acid disazo dyestuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729630A (en) * 1950-11-02 1956-01-03 Basf Ag Acid disazo dyestuffs

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