Use of organotin esterification catalysts for reducing extractability

摘要

Organotin catalysts containing at least one direct oxygen-to-tin bond and one direct carbon-to-tin bond, e.g. hydroxybutyltin oxide, monobutyltin tris (2-ethylhexanoate), dibutyltin oxide, are use as esterification catalysts in the production of polyester and polyester-containing compositions and articles. Articles made from such polyester and polyester-containing compositions have low extractable toxicity and are suitable for use in regulated food, beverage, pharmaceutical, and medical-device applications.