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Application filed by Everlight Chem Ind CorpfiledCriticalEverlight Chem Ind Corp
Priority to TW83107833ApriorityCriticalpatent/TW267183B/en
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Publication of TW267183BpublicationCriticalpatent/TW267183B/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
A tri-azo black dye with the following formula (I) (see claim 1) where R1 represents hydrogen, amino group or hydroxyl group; R2 represents hydroxyl group or amino group.
TW83107833A1994-08-261994-08-26Tri-azo black dyes
TW267183B
(en)