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Priority to RO121428ApriorityCriticalpatent/RO93346B1/en
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Publication of RO93346B1publicationCriticalpatent/RO93346B1/en
Inventia se refera la un colorant brun direct nebenzidinic pentru vopsirea firelor celulozice si de amestec cu rezistente ridicate la tratamente umede si lumina si la un procedeu de obtinere a acestuia prin cuplarea asimetrica a 4,4'-diaminobenzanilidei bis-diazotate cu acidul salicilic, urmata de cuplarea alcalina a diazoazocolorantului format cu complexul de cupru al colorantului obtinut prin cuplarea acidului 2-aminofenol-4-sulfonic diazotat cu rezorcina.The invention relates to a direct nebenzidine brown dye for dyeing cellulose yarns and blending with high resistance to wet and light treatments and to a process for obtaining this by asymmetrical coupling of bis-diazotassium 4,4'-diaminobenzanilide with salicylic acid followed by of the alkaline coupling of the diazoazocolorant formed with the copper complex of the dye obtained by coupling the diazotate-2-aminophenol-4-sulfonic acid with resorcinol.
RO121428A1985-12-271985-12-27Non-benzidinic brown direct colouring agent and process for preparing the same
RO93346B1
(en)