Methyltin catalysts for polyesterfication
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United States of America Patent
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Issued Date -
Aug 7, 2003
app pub date -
Dec 9, 2002
filing date -
Dec 27, 2001
priority date (Note) -
Abandoned
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Abstract
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.
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