GB190824601A - Improvements in and relating to the Manufacture and Production of Flavopurpurine. - Google Patents

Improvements in and relating to the Manufacture and Production of Flavopurpurine.

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Publication number
GB190824601A
GB190824601A GB190824601DA GB190824601A GB 190824601 A GB190824601 A GB 190824601A GB 190824601D A GB190824601D A GB 190824601DA GB 190824601 A GB190824601 A GB 190824601A
Authority
GB
United Kingdom
Prior art keywords
flavopurpurine
relating
manufacture
production
per cent
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
Philip Arthur Newton
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 GB190824601A publication Critical patent/GB190824601A/en
Expired legal-status Critical Current

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Abstract

24,601. Newton, P. A., [Farbenfabriken vorm. F. Bayer & Co.]. Nov. 16. Dyes, artificial.-Flavopurpurin is obtained by heating anthraflavic acid or anthraquinone-2 : 6- disulphonic acid with excess of caustic alkali solutions of thirty to fifty per cent strength, or with less than twenty parts of caustic alkali solutions of twenty to fifty per cent strength. Oxidizing-agents, such as sodium nitrate or potassium chlorate, may be added.
GB190824601D 1908-11-16 1908-11-16 Improvements in and relating to the Manufacture and Production of Flavopurpurine. Expired GB190824601A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190824601T 1908-11-16

Publications (1)

Publication Number Publication Date
GB190824601A true GB190824601A (en) 1909-07-08

Family

ID=32440105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190824601D Expired GB190824601A (en) 1908-11-16 1908-11-16 Improvements in and relating to the Manufacture and Production of Flavopurpurine.

Country Status (1)

Country Link
GB (1) GB190824601A (en)

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