ES233228A1 - Procedure for the preparation of asymmetric indigoid tint dye colorants (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of asymmetric indigoid tint dye colorants (Machine-translation by Google Translate, not legally binding)
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Novartis AG
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Ciba Geigy AG
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Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Process for the preparation of asymmetric indigoid tina dyes characterized in that a 5-halogeno-3-oxy-tionallytene of formula (2) or a derivative thereof capable of reacting in position 2 is condensed with a 6-alkoxy-3-oxothioatene formula ** in which the alkyl radical has at least 2 carbon atoms with a derivative of the same to react in position 2. (Machine-translation by Google Translate, not legally binding)
ES0233228A1956-01-251957-01-24Procedure for the preparation of asymmetric indigoid tint dye colorants (Machine-translation by Google Translate, not legally binding)
ExpiredES233228A1
(en)