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Philip Arthur Newton
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8590. Newton, P. A., [Farbenfabriken vorm. F. Bayer & Co.]. April 6. Lakes are obtained. by the usual methods from the monoazo dyes produced by combining diazotized o-nitraniline or its homologues or halogen substitution products with acetoacetic or benzoylacetic ester and converting the products into the amides, alkylamides, or aralkylamides, by treatment with ammonia, monoalkylamines, or monoaralkylamines. According to an example, the monoazo dye m - nitrotoluene - p - azoacetoacetic methylamide is mixed with heavy spar; other parent materials specified are ethylamides, propylamides, benzylamides; o - nitraniline, p-chlor-o-nitraniline. The lakes are of greenishyellow shades.
GB191108590D1911-04-061911-04-06Manufacture and Production of New Pigment Colours.
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