| abstract |
The obtained fibers have a favorable color tone and excellent qualities without showing fluffing Polyester fibers with a deformed section are produced from a polyester polymer which is obtained by polycondensing an aromatic dicarboxylate ester in the presence of a catalyst containing a mixture of a Ti component (A) comprising at least one a titanium alkoxide (a) of the following formula (I) or a reaction product thereof with a specific carboxylic acid of the formula (II) or its anhydride with a P compound component (B) represented by the following general formula (III) and/or a reaction product of a Ti compound component c with a P compound component (D) represented by the following general formula (IV), in which R1~R4=C1-C20 alkyl or phenyl, m=1~4, n=2~4, R5~R7=C1-C4 alkyl, X=-CH2- or -CH(Ph)-, R8=C1-C20 alkyl or C6-C20 aryl, p=1 or 2. The obtained fibers have a favorable color tone and excellent qualities without showing fluffing. |