METHOD FOR PRODUCING POLY-L-LACTIC ACID BY DIRECTLY POLYCONDENSATING L-LACTIC ACID
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Mar 10, 2016
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Apr 23, 2014
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Apr 24, 2013
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Abstract
A method for producing high-molecular poly-L lactic acid by directly polycondensating L-lactic acid using a melt-phase condensation and a subsequent solid-phase condensation using acidic and supported solid catalysts. A method of using an acidic and supported solid catalyst for producing high-molecular poly-L lactic acid by directly polycondensating L-lactic acid, preferably supported and calcined zirconium sulfate is also disclosed.
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