POLYESTER RESIN AND ITS MANUFACTURING PROCESS

摘要

PROBLEM TO BE SOLVED: To provide a polyester resin which is less prone to cause mold smudging or die fouling at the time of molding processing. SOLUTION: The polyester resin is one which is composed mainly of terephthalic acid and ethylene glycol and whose total amount of acetone-soluble oligomer components contained therein, with melting points of 200°C or lower, is 0.05 wt.% or less. COPYRIGHT: (C)2004,JPO&NCIPI