GB191018099A - The Manufacture and Production of Monoazo Colouring Matters. - Google Patents

The Manufacture and Production of Monoazo Colouring Matters.

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Publication number
GB191018099A
GB191018099A GB191018099DA GB191018099A GB 191018099 A GB191018099 A GB 191018099A GB 191018099D A GB191018099D A GB 191018099DA GB 191018099 A GB191018099 A GB 191018099A
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GB
United Kingdom
Prior art keywords
acid
monoazo
manufacture
production
combination
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
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.)
Novartis AG
Original Assignee
JR Geigy AG
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 JR Geigy AG filed Critical JR Geigy AG
Application granted granted Critical
Publication of GB191018099A publication Critical patent/GB191018099A/en
Expired legal-status Critical Current

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Abstract

18,099. Anilinfarben- and Extract- Fabriken vorm. J. R. Geigy. Oct. 1, 1909, [Convention date]. Monoazo dyes are obtained by combining the diazo compound of p-nitraniline-o-sulphonic acid with salicylic acid or o- or m-cresotinic acid. In the case of salicylic or o-cresotinic acid the combination is effected under such conditions that the action of alkalies upon the diazo compound is obviated; this is done by adding the theoretical amount of soda or ammonia in drops to a cold mixture of the two components, or by carrying out the process in presence of oxides or hydroxides of magnesium, zinc, or alkaline earths. The combination with m-cresotinic acid is carried out under ordinary conditions.
GB191018099D 1909-10-01 1910-07-29 The Manufacture and Production of Monoazo Colouring Matters. Expired GB191018099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191018099X 1909-10-01

Publications (1)

Publication Number Publication Date
GB191018099A true GB191018099A (en) 1911-02-02

Family

ID=32521761

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191018099D Expired GB191018099A (en) 1909-10-01 1910-07-29 The Manufacture and Production of Monoazo Colouring Matters.

Country Status (1)

Country Link
GB (1) GB191018099A (en)

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