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Mitsubishi Kasei Corp
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Mitsubishi Kasei Corp
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Application filed by Mitsubishi Kasei CorpfiledCriticalMitsubishi Kasei Corp
Priority to JP14195876ApriorityCriticalpatent/JPS5366941A/en
Publication of JPS5366941ApublicationCriticalpatent/JPS5366941A/en
PURPOSE: 1,5-or 1,8-Dimthoxyanthraquinone is subjected to nitration, hydrolysis and reduction successively without isolation of the intermediate in conc. sulfuric acid to produce anthraquinone dyes in high yields.
COPYRIGHT: (C)1978,JPO&Japio
JP14195876A1976-11-261976-11-26Preparation of anthroquinone dispersion dyes
PendingJPS5366941A
(en)
Utilisation of the mixture of minimal 90% sodium dichromate dinaftylmetandisulfo acid,0,1-9,9% sulfuric acid and sodium hydrogen in the optional relation mixture and minimal 5% technical impurities