| 摘要 |
PROBLEM TO BE SOLVED: To provide a normal pressure cationically-dyeable polyester which has excellent polymerization reactivity, is cationically dyeable under normal pressure, and has excellent hue.SOLUTION: In a copolyester composition, a mainly repeated unit is constituted of ethylene terephthalate, a sulfoisophthalic acid salt is copolymerized, and polyalkylene glycol is contained. |
