Customers would produce polyester in their existing plant with only minimal investment, while maintaining throughput at current levels. Polyester polymer would be of better quality, to note appearance and thermal stability, compared with conventional polyesters. Furthermore, the new catalyst would be environment-friendly. And, they could reduce total cost by raising throughput. We would provide new technology for producing a polyester polymer of better quality and consistency compared with conventional catalysts. Accordingly, customers would produce products of excellent appearance and improved properties like thermal stability with less undesired particle formation. Furthermore, productivity is expected to improve for some applications and customers would benefit from cost reductions.