859046-55-2Relevant articles and documents
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.