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
Denton Abel Charles
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Agfa Gevaert NV
Original Assignee
Aktiengesellschaft fuer Anilinfabrikation GmbH
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Application filed by Aktiengesellschaft fuer Anilinfabrikation GmbHfiledCriticalAktiengesellschaft fuer Anilinfabrikation GmbH
Application grantedgrantedCritical
Publication of GB189724527ApublicationCriticalpatent/GB189724527A/en
24,527. Abel, C. D., [Actiengesellschaft f³r Anilin Fabrikation]. Oct. 22. Dyes, artificial.-Black disazo colouring-matters for wool are produced by combining the diazo compounds of p-amidodiphenylamine mono- or di-sulphonic acids, or homologues thereof, with a-naphthylamine, and then rediazotizing the amido-azo compounds thus produced, and combining them with a- or #-naphthol sulphonic acids, or with #-naphthol itself when a disulpbonic acid has been used in the first step. Examples are given in which the following constituents are used :-p-amidodiphenylamine sulphonic acid, a-naphthylamine, and a,-naphthola2 - monosulphonic acid; p-amido - phenyltolylamine sulphonic acid, a-naphthylamine, and #1- naphthol-#2#3-disulphonic acid-R ; and p-amidodiphenylamine disulphonic acid, a-naphthylamine, and #-naphthol.
GB189724527D1897-10-221897-10-22Manufacture of Black Disazo-colouring Matters.
ExpiredGB189724527A
(en)