POLYMERIZATION CATALYST FOR POLYESTER, POLYESTER, AND PROCESS FOR PRODUCING THE SAME

摘要

A polyester which is produced with a polymerization catalyst containing metals other than antimony and germanium as major metallic ingredients and which is reduced in filter clogging during molding, etc. The polyester contains at least one member selected from the group consisting of alkali metals, alkali metal compounds, alkaline earth metals, and alkaline earth metal compounds and at least one member selected from the group consisting of aluminum and compounds thereof, the contents of these satisfying the following relationships (1) and (2). [M] < 0.05 (1) [M] / [Al]