| 摘要 |
PROBLEM TO BE SOLVED: To provide a polymerization catalyst for giving aromatic polyesters having a slight amount of foreign substances and a good color tone and a process for producing an aromatic polyester using the same. SOLUTION: The aromatic polyester polymerization catalyst contains a compound (C) obtained by reacting a metallic compound containing at least one metal M selected from alkaline earth metals with a compound L having at least one imino group in which one nitrogen atom has one carbon atom and a double bond and at least one phenolic hydroxyl group. COPYRIGHT: (C)2008,JPO&INPIT
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