A process for the continuous production of substantially purified lactide and lactide polymers from lactic acid or an ester of lactic acid including the steps of forming crude polylactic acid, preferably in the presence of a catalyst means in the case of the ester of lactic acid, to form a condensation...http://www.google.com.au/patents/US6326458?utm_source=gb-gplus-sharePatent US6326458 - Continuous process for the manufacture of lactide and lactide polymers
