| 摘要 |
PROBLEM TO BE SOLVED: To provide a wholly aromatic polyester whose quality can effectively be controlled and which has high fluidity, high heat resistance and high tin-welding heat resistance, and to provide its manufacturing method. SOLUTION: In the first step, the pre-polymerization reaction is carried out to prepare a pre-polymer having a specific particle size distribution. Then, in the second step, the resultant pre-polymer is subjected to solid-phase polymerization reaction. COPYRIGHT: (C)2008,JPO&INPIT
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