BLUE DYE COMPOUNDS, METHODS FOR PREPARING THE SAME, AND BLUE DISPERSE DYE COMPOSITES COMPRISING BLUE THE SAME

摘要

PURPOSE: A blue dye compound is provided to be useful for dyeing polyester mixed fiber is provided to have excellent dyeing rate and high fastness, thereby capable of being used for dyeing polyester. CONSTITUTION: A blue dye compound is represented by chemical formula 1. In chemical formula 1, X is CN or NO2. R is a hydrogen or C1-4 alkoxy group, R1 and R2 is independently a C1-5 alkyl group. A manufacturing method of the blue dye compound comprises: a step of diazotization of a compound indicated in chemical formula 3, and coupling with a compound indicated in chemical formula 2; and a step of manufacturing the compound indicated in chemical formula 1 by reacting with metal cyanide compound after the coupling reaction.