| 摘要 |
PROBLEM TO BE SOLVED: To provide a material having a soft and pliable touch feeling and excellent same color properties and color fastness by modifying polyethylene terephthalate and using the resultant modified polyethylene terephthalate together with cellulose fibers. SOLUTION: The mixed dyed product of readily dyeable polyester fibers and the cellulose fibers is characterized as follows. The mixed dyed product is composed of the readily dyeable polyester fibers composed of a polyester composed of the polyethylene terephthalate copolymerized with 3-8 wt.% of a polyethylene glycol having 300-2,000 molecular weight in which≥90 wt.% is composed of an ethylene terephthalate repeating unit, having a W-shaped cross-sectional form of single filaments, satisfying the following conditions (1) and having the temperature (Tmax) at which the dynamic loss tangent (tanδ) exhibits the maximum at 110 Hz measuring frequency within the range represented by (2) and the cellulose fibers. (1) 2.0≤flatness≤4.0 and (2) 85≤(Tmax)≤105°C. COPYRIGHT: (C)2006,JPO&NCIPI
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