发明授权
- 专利标题： Process for the preparation of L-lactide of high chemical yield and optical purity
- 专利标题（中）： 制备高产率和光学纯度的L-丙交酯的方法
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申请号： US13595627申请日： 2012-08-27
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公开(公告)号： US08895760B2公开(公告)日： 2014-11-25
- 发明人: Bhaskar Bhairavnath Idage , Susheela Bhaskar Idage , Sivaram Swaminathan
- 申请人： Bhaskar Bhairavnath Idage , Susheela Bhaskar Idage , Sivaram Swaminathan
- 申请人地址： IN
- 专利权人： Council of Scientific & Industrial Research
- 当前专利权人： Council of Scientific & Industrial Research
- 当前专利权人地址： IN
- 代理机构： St. Onge Steward Johnston & Reens LLC
- 优先权： IN435/DEL/2010 20100226; IN532/DEL/2010 20100309
- 主分类号： C07D319/00
- IPC分类号： C07D319/00 ; C07D319/12
摘要：
A process for the synthesis of 100% optically pure L(+)-lactide catalyzed by zinc and tin metal catalysts of less than 150 micron particle size is disclosed. The L-lactide obtained was further purified to obtain lactide of 100% optical purity and acid impurities less than 10 meq/kg.
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