| 摘要 |
Polyester fibers comprising a copolyester which simultaneously satisfies the following respective requirements (a) to (c), (a) a terephthalic acid component in an amount of 0 to 100 mol% and a 2,6-naphthalenedicarboxylic acid component in an amount of 100 to 0 mol% respectively based on the whole dicarbxylic acid component, wherein the total amount, of the terephthalic acid component and the 2,6-naphthalenedicarboxylic acid component, accounts for 90 mol% or more based on the whole dicarboxylic acid component, (b) a trimethylene glycol component accounts for 0 to 100 mol% and a 1,4-cyclohexanedimethanol component accounts for 100 to 0 mol% respectively based on the whole glycol component, wherein the total amount, of the trimethylene glycol component and the 1,4-cyclohexanedimethanol component, accounts for 90 mol% or more based on the whole glycol component and (c) the sum total value of mol% of the 2,6-naphthalenedicarboxylic acid component and mol% of the 1,4-cyclohexanedimethanol component is 2 mol% or more. |
