Simplified method of producing biodegradable aliphatic polyesters
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United States of America Patent
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Issued Date -
Nov 27, 2003
app pub date -
Mar 4, 2003
filing date -
Dec 4, 2001
priority date (Note) -
Abandoned
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Abstract
A method of synthesizing biodegradable aliphatic polyesters from one or more aliphatic dicarboxylic acids or diesters of the said acids and one or more linear or branched aliphatic glycols, comprising a first esterification or transesterification step and a second deglycolation under vacuum step, in which the catalyst is monobutylstannoic acid both for the esterification or transesterification step and for the deglycolation under vacuum step.
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