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Hickson and Welch Ltd
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Hickson and Welch Ltd
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Application filed by Hickson and Welch LtdfiledCriticalHickson and Welch Ltd
Publication of ES237635A1publicationCriticalpatent/ES237635A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A process for the preparation of new compounds of the general formula ** (See formula) ** wherein X is a hydrogen group, a non-chromophore or a non-auxochrome group, n is an integer of 1 and 5, R1 is hydrogen or a hydrocarbon radical, and R2 is hydrogen, a hydrocarbon radical, a hydroxyalkyl or a polyethoxy group) and salts thereof, in particular water-soluble, for example, alkali metal, particularly sodium salts, comprising the oxidation of an o-amino azo dye of the general formula ** (See formula) ** (in which X, n, R1 and R2 have the meanings stated above). (Machine-translation by Google Translate, not legally binding)
ES0237635A1956-09-181957-09-17Procedure for the preparation of optical blanking agents (Machine-translation by Google Translate, not legally binding)
ExpiredES237635A1
(en)
Procedure for the manufacture of derivatives of the 1-bencil tetrahidroisoquinolina basically replaced (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of n, n '- (isopropil-malonil) -5,6-dihydro-benzo- (c) -cinoline and its salts (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of n, n - (tetrahydrofurfurilmalonil) -5,6-dihydro-benzo (c) cinoline and of derivatives of the same (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of three phenylometric derivatives containing sulphonic groups (Machine-translation by Google Translate, not legally binding)