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Novartis AG
BASF Schweiz AG
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Ciba Geigy AG
Ciba AG
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Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES233228A1publicationCriticalpatent/ES233228A1/es
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Procedimiento para la preparación de colorantes tina indigoides asimétricoscaracterizado porque se condensa un 5-halogeno-3-oxitionafteno de fórmula **(Ver fórmula)** o un derivado del mismo apto para reaccionar en posición 2con un 6-alcoxi-3-oxitionafteno de fórmula **(Ver fórmula)** en la que el radical alkilo presenta a lo menos 2 átomos de carbonoo con un derivado del mismoapto para reaccionar en posición 2.
ES0233228A1956-01-251957-01-24PROCEDIMIENTO PARA LA PREPARACIoN DE COLORANTES TINA INDIGOIDES ASIMÉTRICOS
ExpiredES233228A1
(es)