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Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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Filing date
Publication date
Application filed by Imperial Chemical Industries LtdfiledCriticalImperial Chemical Industries Ltd
Priority to ES228623ApriorityCriticalpatent/ES228623A1/en
Publication of ES228623A1publicationCriticalpatent/ES228623A1/en
Procedure for obtaining new diazo dyes, characterized in that these in the form of their free acids, have the formula ** (See formula) ** wherein the benzene nucleus A optionally carries substituents other than the hydroxyl and amino groups; X represents a hydrogen atom or a substituent other than halogen; and Y1 and Y2 are such that one of them represents a hydrogen atom, and the other, a hydrogen atom or the -SO3-H group. (Machine-translation by Google Translate, not legally binding)
ES228623A1956-05-211956-05-21Procedure for obtaining new diazoic dyes. (Machine-translation by Google Translate, not legally binding)
ExpiredES228623A1
(en)
Procedimine for the obtaining of derivatives of the acid p- [cumarinyl- (3)] - phenyl carbamine (Machine-translation by Google Translate, not legally binding)