859046-55-2Relevant academic research and scientific papers
PROCESS FOR MANUFACTURING A CYCLIC DIESTER OF AN A-HYDROXY ACID
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Page/Page column 6, (2009/12/28)
Process for manufacturing a cyclic diester of an α-hydroxy acid comprising the following steps: a substantially anhydrous salt of a divalent metal and of an α-hydroxy acid is mixed with a strong acid, the pKa of which is less than that of the α-hydroxy acid and the salt of which with the divalent metal is hygroscopic; andthe mixture is left to react for a sufficient time in order to obtain the cyclic diester dispersed in the hygroscopic salt.
METHOD OF RECOVERING LACTIDE FROM POLYLACTIC ACID OR DERIVATIVE THEREOF
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Page/Page column 8, (2008/06/13)
To provide an efficient method for recovering and producing lactide having high optical purity by depolymerizing a polylactic acid or derivative thereof in order to carry out chemical recycling of the polylactic acid or derivative thereof or of a resin composition comprising same, wherein a mixture of a polylactic acid or derivative thereof and aluminum hydroxide is thermally decomposed at a temperature in a range from at least the melting temperature of the polylactic acid or derivative thereof to no greater than 320°C, thus recovering lactide.
