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Novartis AG
Original Assignee
JR Geigy AG
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Publication date
Application filed by JR Geigy AGfiledCriticalJR Geigy AG
Priority to ES0244843ApriorityCriticalpatent/ES244843A1/en
Publication of ES244843A1publicationCriticalpatent/ES244843A1/en
Process for the preparation of monoazo dyes, characterized in that a diazotized 2-amino-benzene-1-sulfonyl compound is coupled to the sulfonyl substituent -so 2 -r wherein r means a hydrocarbon, aryloxy, or organic amino radical, and wherein all the organic radicals can be optionally substituted even further, with a 1-aryl-5-aminopyrazole, by selecting the components so that the dye contains a group having acid dissociation, which forms alkaline salts of neutral water solubility. (Machine-translation by Google Translate, not legally binding)
ES0244843A1958-10-221958-10-22Procedure for the preparation of monoazocolorants (Machine-translation by Google Translate, not legally binding)
ExpiredES244843A1
(en)
Procedure for the preparation of metalizable monoazocolorants and susu complex heavy matal compounds (Machine-translation by Google Translate, not legally binding)