Disperse dye for polylactic acid fibers and black dye composition comprising thereof

摘要

PURPOSE: A disperse dye is provided to have remarkably excellent initial dyeability when dyeing polylactic acid fibers, and to have excellent color shade and fastness. CONSTITUTION: A blue disperse dye compound has a structure represented by chemical formula 1, a red disperse dye compound has a structure represented by chemical formula 2, and a yellow disperse dye compound has a structure represented by chemical formula 3. In chemical formula 1, R1 is -NO2 or -COOCH2H3; R2 is -H, -CH3, or -NH-CO-CH3; R3 is -H or -OCH3; R4 is -CH2CH2-O-COCH3 or -CH2CH2-O-CH2CH2OH; and R5 is -CH2CH3, -CH2CH2-O-COCH3, or -CH2CH2-O-CH2CH2OH. In chemical formula 2, R1 is -CH3 or -NH-CO-CH3; R2 is -H or -OCH3; each of R3 and R4 is -CH2CH=CH2, -CH2CH3, or -CH2CH2-O-COCH3.