| 摘要 |
PROBLEM TO BE SOLVED: To obtain a recycled polyester fiber that has slight variation of physical values and excellent hydrolytic resistance, is favorably used even under high-temperature and high-humidity conditions, hardly causes uneven dyeing in dyeing and has an excellent color tone as a fabric even by the use of recycled polyester. SOLUTION: The recycled polyester fiber comprises≥30 mass% of recycled polyester based on the total of fibers and has≤25 equivalent/ton terminal carboxy group concentration in the fibers. COPYRIGHT: (C)2005,JPO&NCIPI
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