Method for preparing a modified copolyester
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United States of America Patent
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Oct 11, 2016
Grant Date -
Jun 30, 2016
app pub date -
Aug 21, 2015
filing date -
Dec 31, 2014
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Abstract
A method for preparing a modified copolyester includes the steps of: i) subjecting a mono(2-hydroxylalkyl)dicarboxylate to an esterification reaction with an isosorbide to form an intermediate; and ii) subjecting the intermediate to a condensation polymerization in the presence of a condensation polymerization catalyst. The method may enhance the reactivity of isosorbide, reduce the amount of water by-product, and raise the glass transition temperature and the color stability of the copolyester thus obtained.
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