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Priority to RO120188ApriorityCriticalpatent/RO92846B1/en
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Publication of RO92846B1publicationCriticalpatent/RO92846B1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Inventia se refera la un procedeu de obtinere a 8-amino-2-naftolului, utilizat la fabricarea intermediarului N-(7-hidroxi-1-naftil) acetamica, aceasta din urma stand la baza a numerosi coloranti acizi complecsi prin adaugarea 8-amino-2-naftalinsulfonatului de sodiu, sub forma de pasta, într-o topitura de hidroxid de potasiu dupa ce aceasta s-a încalzit la peste 230 grade C.The invention relates to a process for obtaining 8-amino-2-naphthol used in the manufacture of the N- (7-hydroxy-1-naphthyl) acetamide intermediate, which latter is the basis of many complex acid dyes by the addition of 8-amino -2-naphthalenesulfonate as a slurry in a potassium hydroxide melt after it has warmed to above 230 DEG C.
RO120188A1985-09-241985-09-24Process for obtaining 8-amino-2-naphthol
RO92846B1
(en)