REACTIVE DARK-BLUE DYE COMPOSITION AND METHOD FOR DYEING NATURAL PROTEIN FIBER OR BLENDED YARN FABRIC OF THE SAME FIBER BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a reactive dark-blue dye composition having excellent fastness to light in dyeing of wool or the like, particularly in medium-light color dyeing and being by no means inferior to a conventional dye composition also in fastness to various moistures. SOLUTION: This reactive dark blue dye composition comprises C. I. Reactive Blue-222 used as a disazo-based blue component, C. I. Reactive Blue-69 or/and C.I. Reactive Blue-50 used as an anthraguinone-based blue component and C.I. Reactive red 55 used as a red component.