| 发明名称 |
METHOD FOR RECOVERING LACTIDE FROM FLAME-RETARDED LACTIC ACID POLYMER COMPOSITION |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for efficiently recovering and producing a lactide having high optical purity for chemical recycling of a lactic acid polymer composition containing a phosphorus-based flame retardant by selectively depolymerizing the lactic acid polymer. <P>SOLUTION: The method for recovering the lactide comprises adding an alkaline earth metal compound to the lactic acid polymer composition containing the phosphorus-based flame-retardant, heating the composition at or above melting temperature of the lactic acid polymer and recovering the lactide formed by the depolymerization of the lactic acid polymer. The alkaline earth metal compound is preferably a magnesium compound or a calcium compound. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
| 申请公布号 |
JP2010120915(A) |
申请公布日期 |
2010.06.03 |
| 申请号 |
JP20080298858 |
申请日期 |
2008.11.22 |
| 申请人 |
KITAKYUSHU FOUNDATION FOR THE ADVANCEMENT OF INDUSTRY SCIENCE & TECHNOLOGY |
发明人 |
NISHIDA HARUO;TSUKUKI TAKAYUKI;YAMADA YASUYUKI;SHIRAI YOSHITO |
| 分类号 |
C07D319/12;C08J11/16 |
主分类号 |
C07D319/12 |
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