METHOD TO PRODUCE SEMI-CRYSTALLINE POLYLACTIDES

申请公布号：EP2756023(A1)

申请号：EP20120831080

申请日期：2012.09.11

申请公布日期：2014.07.23

申请人：

HITACHI ZOSEN CORPORATION;TOHOKU ELECTRIC POWER CO., INC.;NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY;NATUREWORKS LLC

发明人：KISHIDA, HISANORI;HASEGAWA, TAKASHI;NOMURA, NOBUYOSHI;TAKAHASHI, MAKOTO;SCHROEDER, JOSEPH;NATAL, MANUEL

分类号：C08G63/78;C08G63/08;C08G63/82;C08L101/16

主分类号：C08G63/78

摘要：<p>This invention provides a method for synthesizing semi-crystalline polylactides (PLA) even from a lactide mixture including meso-LA and rac-LA. According to the invention, when a mixture of racemic lactide and meso-lactide ispolymerized using a catalyst capable of iso-selectively polymerizing L-lactide and D-lactide, an amorphous poly (meso-lactide) block is formed from meso-lactide and a semi-crystalline poly (racemic lactide) block is formed from racemic lactide by separately polymerizing racemic lactide and meso-lactide by taking advantage of a difference in physicochemical properties between racemic lactide and meso-lactide, whereby polylactide which is semi-crystalline as a whole is produced.</p>

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