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 IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB190804141ApublicationCriticalpatent/GB190804141A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
4141. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. Feb. 24. [Patent of Addition to No. 16,775, A.D. 1907.] Dyes, artificial. - Anthrapyridone dyes are obtained by condensing together 4-halogen-2- methyl-1-acetylaminoanthraquinone and 2-amino- or 2 : 6- or 2 : :7-diamino-anthraquinone. According to examples, the 4-chlor-derivative is used. Specification No. 16,775, A.D. 1907, is referred to.
GB190804141D1907-07-221908-02-24Improvements in the Manufacture of Colouring Matters of the Anthracene Series.
ExpiredGB190804141A
(en)