| 摘要 |
A process for producing a polyester composition comprising polyester and a metal salt of aliphatic carboxylic acid, comprises: providing a vented extruder; and feeding said metal salt together with said polyester as a raw material having a specific resistance of not less than 1 x 10<7> OMEGA .cm upon melting, to said vented extruder, in such an amount that the concentration of metal atom based on said polyester composition is 0.5 to 1,000 ppm. Such a process is industrially useful for producing a polyester composition to which an electrostatic pinning method usually adopted for molding amorphous sheets can be suitably applied. <IMAGE> |
