发明授权
- 专利标题： Method to produce semi-crystalline polylactides
- 专利标题（中）： 生产半结晶聚交酯的方法
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申请号： US14343912申请日： 2012-09-11
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公开(公告)号： US09284403B2公开(公告)日： 2016-03-15
- 发明人: Hisanori Kishida , Takashi Hasegawa , Nobuyoshi Nomura , Makoto Takahashi , Joseph Schroeder , Manuel Natal
- 申请人： Hisanori Kishida , Takashi Hasegawa , Nobuyoshi Nomura , Makoto Takahashi , Joseph Schroeder , Manuel Natal
- 申请人地址： JP Osaka-shi JP Sendai-shi JP Nagoya-shi US MN Minnetonka
- 专利权人： Hitachi Zosen Corporation,Tohoku Electric Power Co., Inc.,National University Corporation Nagoya University,NatureWorks LLC
- 当前专利权人： Hitachi Zosen Corporation,Tohoku Electric Power Co., Inc.,National University Corporation Nagoya University,NatureWorks LLC
- 当前专利权人地址： JP Osaka-shi JP Sendai-shi JP Nagoya-shi US MN Minnetonka
- 代理机构： Locke Lord LLP
- 代理商 James E. Armstrong, IV; Nicholas J. DiCeglie, Jr.
- 优先权： JP2011-198712 20110912
- 国际申请： PCT/JP2012/074308 WO 20120911
- 国际公布： WO2013/039266 WO 20130321
- 主分类号： C08G63/00
- IPC分类号： C08G63/00 ; C08G63/08 ; C08G63/82
摘要：
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.
公开/授权文献
- US20150087799A1 METHOD TO PRODUCE SEMI-CRYSTALLINE POLYLACTIDES 公开/授权日：2015-03-26
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