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Expired
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Carl Mensching
Ernest Francis Ehrhardt
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Individual
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Individual
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Publication of GB191510716ApublicationCriticalpatent/GB191510716A/en
10,716. Mensching, C., and Ehrhardt, E. F. July 23. Monoazo dyes are obtained by combining diazotized picramic acid with such unsulphonated amino derivatives of naphthalene as yield o-aminoazo compounds, for example #- naphthylamine or acet-p-naphthylenediamine; the products give green or olive-green shades on wool &c. with meta-chrome mordant. Specification 8874/00, [Class 15, Bleaching &c.], is referred to.
GB191510716D1915-07-231915-07-23Improvements in the Manufacture and Production of Colouring Matters.
ExpiredGB191510716A
(en)