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.)
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Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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Publication date
Application filed by Imperial Chemical Industries LtdfiledCriticalImperial Chemical Industries Ltd
Priority to ES0241268ApriorityCriticalpatent/ES241268A1/en
Publication of ES241268A1publicationCriticalpatent/ES241268A1/en
Method of manufacturing new monoazo dyes, characterized in that these in their free acid form, are represented by the formula ** (See formula) ** wherein A represents a radical of the benzene series, free of hydroxyl, amino or monoalkylamino groups, X represents a halogen atom, represents a hydrogen atom or an alkyl or free aryl radical of metallizable systems, R2 and R3 may be the same or different, and each of them represents a hydrogen atom or an alkyl radical, A and R1 are different, chosen in such a way that one or both contain at least one sulfonic acid group, one Y represents a sulphonic acid group, while the other Y represents a hydrogen atom. (Machine-translation by Google Translate, not legally binding)
ES0241268A1958-04-111958-04-11Procedure for manufacturing new monoazoic dyes (Machine-translation by Google Translate, not legally binding)
ExpiredES241268A1
(en)