| abstract |
The present invention provides a polymerization catalyst for producing a polyester, which is excellent in melting catalyst activity and solid-phase polymerization activity, reduces the generation amount of sublimates, improves crystallinity, and has a low content of terminal COOH concentration at the end of a polyester chain. A polyester comprising a polyester polymerization catalyst represented by the following general formula (I) or (II), or a compound represented by the following general formula (I) or (II): The present invention relates to a method for producing polyester characterized by being polymerized. [Selection figure] None |