GB191123924A - Improvements in and relating to the Manufacture and Production of Leucoquinizarine. - Google Patents

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

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Publication number
GB191123924A
GB191123924A GB191123924DA GB191123924A GB 191123924 A GB191123924 A GB 191123924A GB 191123924D A GB191123924D A GB 191123924DA GB 191123924 A GB191123924 A GB 191123924A
Authority
GB
United Kingdom
Prior art keywords
acid
leucoquinizarine
relating
manufacture
production
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 GB191123924A publication Critical patent/GB191123924A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compounds Of Unknown Constitution (AREA)

Abstract

23,924. Newton, P. A., [Farbenfabriken vorm. F. Bayer & Co.]. Oct. 28. Leucoquinizarin is obtained by reducing purpurin with acid reducing-agents in the presence of boric acid; according to an example, purpurin is reduced by aluminium and sulphuric acid in the presence of boric acid; the boric ester of leucoquinizarin is formed and is sapomfied by heating with dilute acid.
GB191123924D 1911-10-28 1911-10-28 Improvements in and relating to the Manufacture and Production of Leucoquinizarine. Expired GB191123924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191123924T 1911-10-28

Publications (1)

Publication Number Publication Date
GB191123924A true GB191123924A (en) 1912-05-23

Family

ID=34357885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191123924D Expired GB191123924A (en) 1911-10-28 1911-10-28 Improvements in and relating to the Manufacture and Production of Leucoquinizarine.

Country Status (1)

Country Link
GB (1) GB191123924A (en)

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