METHYLTIN CATALYSTS FOR POLYESTERFICATION

摘要

Methyltin compounds useful as catalysts in high−temperature esterification and polyesterification reactions are described. The esters and polyesters produced by the process possess superior physical/chemical properties such as improved color and thermal stability with less production of undesirable by−products. The greater stability of these catalysts allows their use in multistage polyesterification reactions and leads to lower use levels in some cases.