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1. 发明申请

US20140342413A1 Separation Process 有权
标题翻译：分离过程
公开(公告)号：US20140342413A1
公开(公告)日：2014-11-20
申请号：US14232426
申请日：2012-07-16
申请人： Plaxica Limited
发明人： Edward Leslie Marshall , Jade Jocelyn Afriye Osei-Tutu , Stephen Alexander Calder Smith
IPC分类号： C12P7/62
CPC分类号： C12P7/62 , C12P7/56 , C12P17/06 , C12P41/003
摘要： A process for treating a mixture of R,R- and S,S-lactide is provided. The process involves contacting the lactide mixture with an aliphatic alcohol and/or an alkoxide to produce a mixture of R,R- and S,S-aliphatic ester of lactyllactic acid, subsequently contacting the mixture of R,R- and S,S-aliphatic ester of lactyllactic acid with an enzyme to produce a mixture comprising aliphatic ester of lactic acid corresponding to one lactide enantiomer and the aliphatic ester of lactyllactic acid corresponding to the other lactide enantiomer, and recovering the product. Also provided are processes for the production of S-lactic acid, S,S-lactide, poly-S-lactic acid, R-lactic acid, R,R-lactide, poly-R-lactic acid and stereocomplex polylactic acid.
摘要翻译：提供了一种用于处理R，R-和S，S-丙交酯的混合物的方法。该方法包括使丙交酯混合物与脂族醇和/或醇盐接触以产生乳糖基乳酸的R，R-和S，S-脂族酯的混合物，随后将R，R-和S的混合物S- 将乳酸乳酸的脂肪族酯与酶反应，生成包含对应于一种丙交酯对映异构体的乳酸脂肪酸酯和对应于其它丙交酯对映异构体的乳糖乳酸脂肪酸酯的混合物，并回收该产物。还提供了用于生产S-乳酸，S，S-丙交酯，聚S-乳酸，R-乳酸，R，R-丙交酯，聚R-乳酸和立体络合物聚乳酸的方法。

2. 发明申请

US20140147898A1 Separation Process 有权
标题翻译：分离过程
公开(公告)号：US20140147898A1
公开(公告)日：2014-05-29
申请号：US14232365
申请日：2012-07-16
申请人： PLAXICA LIMITED
发明人： Edward Leslie Marshall , Jade Jocelyn Afriye Osei-Tutu , Stephen Alexander Calder Smith
IPC分类号： C12P7/62
CPC分类号： C12P7/62 , C12P7/56 , C12P17/06 , C12P41/003
摘要： A process for treating a mixture of R,R- and S,S-lactide is provided. The process involves contacting the mixture with an aliphatic alcohol and an enzyme to produce a mixture comprising aliphatic ester of lactic acid corresponding to one lactide enantiomer and the aliphatic ester of lactyllactic acid corresponding to the other lactide enantiomer; separating the mixture from the enzyme, and recycling the enzyme to the process; and separating the aliphatic ester of lactic acid from the aliphatic ester of lactyl-lactic acid by fractional distillation. Also provided are processes for the production of S-lactic acid, S,S-lactide, poly-S-lactic acid, R-lactic acid, R,R-lactide, poly-R-lactic acid and stereocomplex polylactic acid.
摘要翻译：提供了一种用于处理R，R-和S，S-丙交酯的混合物的方法。该方法包括使混合物与脂族醇和酶接触以产生包含对应于一种丙交酯对映异构体的乳酸脂肪酸酯和对应于其它丙交酯对映异构体的乳糖乳酸脂族酯的混合物; 从酶分离混合物，并将酶再循环至该方法; 并通过分馏从乳酸 - 乳酸的脂肪族酯分离乳酸的脂族酯。还提供了用于生产S-乳酸，S，S-丙交酯，聚S-乳酸，R-乳酸，R，R-丙交酯，聚R-乳酸和立体络合物聚乳酸的方法。

3. 发明申请

US20150240272A1 LACTATE PRODUCTION PROCESS 审中-公开
标题翻译： LACTATE生产工艺
公开(公告)号：US20150240272A1
公开(公告)日：2015-08-27
申请号：US14429245
申请日：2013-09-19
申请人： PLAXICA LIMITED
发明人： Stephen Alexander Calder Smith , James Andrew Surman
IPC分类号： C12P7/62 , C08G63/06 , C12P7/56
CPC分类号： C12P7/625 , C07C67/333 , C08G63/06 , C12P7/56 , C12P7/62 , C12P41/004 , C07C69/67
摘要： A process for producing a compound of formula (I) is provided. The process comprises reacting a mixture comprising a compound of formula (IIA) and a compound of formula (IIB) with an alkyl alcohol in the presence of a Candida antarctica lipase B enzyme to produce a product comprising the compound of formula (I) and the compound of formula (IIB); wherein R1 is C1 to C6 alkyl; and wherein R2 is II or C1 to C12 alkyl. Also provided are processes for the production of R-lactic acid, oligomeric R-lactic acid, R,R-lactide, poly-R-lactic acid, alkyl S-lactate, S-lactic acid, oligomeric S-lactic acid, S,S-lactide, poly S-lactic acid and stereocomplex polylactic acid.
摘要翻译：提供了制备式（I）化合物的方法。该方法包括在南极假丝酵母脂肪酶B酶的存在下使包含式（IIA）化合物和式（IIB）化合物与烷基醇的混合物反应，以产生包含式（I）化合物和式（IIB）化合物; 其中R1是C1-C6烷基; 并且其中R 2是II或C 1至C 12烷基。还提供了制备R-乳酸，低聚R-乳酸，R，R-丙交酯，聚R-乳酸，S-乳酸烷基酯，S-乳酸，低聚S-乳酸，S， S-丙交酯，聚S-乳酸和立体络合物聚乳酸。

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