Organic-acid-based catalyst for production of polylactic acid
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United States of America Patent
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Jul 9, 2009
app pub date -
Jun 12, 2007
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Jun 15, 2006
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Abandoned
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Abstract
Provided is a new organic-acid-based catalyst enabling production of a polyhydroxycarboxylic acid by direct dehydration polycondensation of a hydroxycarboxylic acid such as L-lactic acid, specifically, an organic-acid-based catalyst comprising an amine salt of a sulfonic acid or a phosphine salt of a sulfonic acid for production of polyhydroxycarboxylic acids such as poly-L-lactic acid.
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