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Novartis AG
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Ciba Geigy AG
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Publication date
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Publication of ES237446A1publicationCriticalpatent/ES237446A1/en
Procedure for the manufacture of new azo dyes, characterized by condensing with trihalogenotriazines amionoazo dyes of the formula R1- N = N-R2-Y in which R1 signifies an aromatic radical, which in certain cases contains azo groups, of a diazo component. it has as many sulfonic groups, at least, as aromatic hexagonal rings; Y, u acylamino group, and R2 a benzene radical attached in position 4 to Y and position 1 to the azo group and containing in position 2 an acylamino group. The condensation is carried out in such a way that there are two halogen atoms in the triazine nucleus of the primary condensation product obtained. (Machine-translation by Google Translate, not legally binding)
ES0237446A1956-09-061957-09-05Procedure for the manufacture of new azoic dyes (Machine-translation by Google Translate, not legally binding)
ExpiredES237446A1
(en)
A procedure for the preparation of 1,2-diphenyl-3,5-dioxo-pirazolidinas, bicyclically substitute (Machine-translation by Google Translate, not legally binding)