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Robert Bolton Ransford
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Publication of GB190604097ApublicationCriticalpatent/GB190604097A/en
4097. Ransford, R. B., [Cassella & Co., L.]. Feb. 19. Dyes, artificial. - Colouring-matters dyeing cotton directly greenish-yellow shades exceptionally fast to washing are produced by heating a mixture of dehydrothiotoluidine, or derivatives thereof containing a higher proportion of sulphur, and benzidine, or thiobenzidine with sulphur, and transforming the products so obtained into soluble colouring-matters by treating with concentrated solutions of caustic alkalies or alkali sulphides.
GB190604097D1906-02-191906-02-19New Sulphur Colours and a Process for Making the Same.
ExpiredGB190604097A
(en)
Improvements in the Manufacture and Production of Colouring Matter of the Anthracene Series, and the Treatment and Employment thereof for Dyeing and Printing.