abstract |
Polyester fiber consisting of an aliphatic polyester having a melt viscosity of 1.0 × 10²-1.0 × 10⁴ poises at a temperature of 190°C at a shear rate of 1000 sec⁻¹ and a melting point of 70-190°C. The polyester fiber of the present invention exhibits biodegradability when buried in the ground. The amount of combustion heat generated on incineration is smaller than that of polyethylene and polypropylene. The polyester fiber of the present invention has excellent physical properties. |