LACTIC ACID OLIGOMER AND METHOD FOR PRODUCING THE SAME
摘要
<p>In a method for producing a lactic acid oligomer by subjecting an aqueous lactic acid solution to a polycondensation reaction under microwave irradiation, the polycondensation reaction is carried out under reduced pressure in the absence of a polymerization catalyst and an organic solvent. An initial polycondensation reaction is carried out under normal pressure, and thereafter, a reaction is carried out under reduced pressure. The pressure is reduced stepwise to give a final pressure of 2000 Pa or less. A lactic acid oligomer which has a high purity and is safe from a hygiene point of view can be obtained at a low cost in a short time.</p>
申请公布号
WO2008139658(A1)
申请公布日期
2008.11.20
申请号
WO2007JP74420
申请日期
2007.12.19
申请人
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCEAND TECHNOLOGY;NAGAHATA, RITSUKO;MOMOTAKE, MASAKO;TAKEUCHI, KAZUHIKO;NAKAMURA, TAKASHI