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ROVIRA BACHS Y MACIA
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ROVIRA BACHS Y MACIA
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Priority to ES0190842ApriorityCriticalpatent/ES190842A3/en
Publication of ES190842A3publicationCriticalpatent/ES190842A3/en
Procedimiento para fabricación de colorantes para algodón azules que contienen azufre consistente en que los productos obtenidos por condensación de p-nitrosofenoles y n-alkilcarbazoles respectivamente n-arilcarbazoles en presencia de ácido sulfúrico o respectivamente sus leucoderivados se calientan con polisulfuros alcalinos.Procedure for the manufacture of blue cotton dyes containing sulfur consisting in that the products obtained by condensation of p-nitrosophenols and n-alkylcarbazoles respectively n-arylcarbazoles in the presence of sulfuric acid or their leuco derivatives are heated with alkali polysulfides.
ES0190842A1949-12-101949-12-10
A PROCEDURE FOR THE MANUFACTURE OF BLUE COTTON DYES CONTAINING SULFUR
ExpiredES190842A3
(en)
PROCEDURE FOR THE MANUFACTURE OF CUBA AZULES COLORANTS OF THE SULFINICA SERIES, FROM THE PRODUCTS OBTAINED BY CONDENSATION OF NITROSOPHENOLS AND CARBAZOLE, IN THE PRESENCE OF CONCENTRATED SULFURIC ACID, OR ITS LEATHER-COMPOSED