DYEING TECHNIQUE FOR POLYTRIMETHYLENE TEREPHTHALATE FIBER

摘要

PROBLEM TO BE SOLVED: To provide a dyeing technique for PTT fibers excellent in clarity of blue dye and reproducibility of the dyeing. SOLUTION: The method uses a blue dispersed dye comprising following dye (A) and (B) with a compounding ratio of (A)/(B)=30-40%/60-70% in dyeing the polytrimethylene terephthalate fiber. (A) C.I. Disperse Blue 60 (B) C.I. Disperse Blue 183.