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公开(公告)号：US20220356282A1
公开(公告)日：2022-11-10
申请号：US17814490
申请日：2022-07-22
申请人： Röhm GmbH
摘要： A process can be used for producing optical molding materials on the basis of methyl methacrylate (MMA). The MMA produced by an optimized method and the molding materials feature in particular a very low yellowness index. This MMA has been produced by direct oxidative esterification of methacrolein. An optimized workup of the reactor output from the oxidative esterification of methacrolein can be used for removing particularly discoloring byproducts. This process moreover has the advantage that fewer demands are placed on plant apparatus configuration.
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公开(公告)号：US11479651B2
公开(公告)日：2022-10-25
申请号：US17087932
申请日：2020-11-03
发明人： Matthew Parrott
摘要： A process for chemically recycling polyethylene terephthalate (PET) which utilizes a microwave absorber to optimize glycolytic depolymerization of PET via microwave irradiation. The method of chemically degrading PET to its reactive intermediate, bis(2-hydroxyethyl) terephthalate (BHET), is carried out by: (a) combining PET with ethylene glycol and a catalytic system comprising a catalyst and a microwave absorber to produce a heterogeneous reaction mixture; and then (b) heating by microwave irradiating the reaction mixture to a temperature sufficient to produce a reaction product comprising BHET. The BHET monomer then can be purified and re-polymerized to form new, virgin PET.
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公开(公告)号：US11407706B2
公开(公告)日：2022-08-09
申请号：US17273279
申请日：2019-09-18
申请人： LG CHEM, LTD.
发明人： Seok Goo Lee , Sung Kyu Lee , Joon Ho Shin
摘要： Provided is a method for manufacturing a terephthalate-based composition, the method comprising: a step (S1) of flowing in a dialkyl terephthalate in which alkyl has 7 to 10 carbon atoms and a primary alcohol with a low boiling point having 4 or 5 carbon atoms into a reactor and performing transesterification of the dialkyl terephthalate and the primary alcohol with a low boiling point; and a step (S2) of extracting in a reduced pressure an unreacted material and a by-product from the reactor after finishing the transesterification, wherein the step S1 comprises a pressure-applying step in which the pressure of the reactor is 1.5 to 2.5 bar.
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公开(公告)号：US11344821B2
公开(公告)日：2022-05-31
申请号：US16978882
申请日：2019-03-07
申请人： TRINSEO EUROPE GMBH
摘要： The invention relates to a process for the chromatographic purification of a starting stream containing ammonium sulfate and 2-hydroxy-2-methylpropionic acid, comprising: passage of the starting stream through a bed of stationary phase; elution of a raffinate enriched in ammonium sulfate and depleted in 2-hydroxy-2-methylpropionic acid; and elution of an extract enriched in 2-hydroxy-2-methylpropionic acid and depleted in ammonium sulfate.
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公开(公告)号：US11026910B2
公开(公告)日：2021-06-08
申请号：US16276920
申请日：2019-02-15
发明人： Iwao Ojima , Dale Deutsch , Martin Kaczocha , William T. Berger , Robert Rizzo , Trent E. Balius
IPC分类号： A61K31/216 , C07C67/08 , C07C211/58 , C07C233/11 , C07C233/58 , C07C235/38 , C07C235/40 , C07C69/753 , C07C69/76 , C07C67/48 , C07C69/757 , G01N33/566 , A61K31/194 , G01N33/68
摘要： The present invention provides a compound, and method of inhibiting the activity of a Fatty Acid Binding Protein (FABP) comprising contacting the FABP with a compound, having the structure:
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公开(公告)号：US20210032386A1
公开(公告)日：2021-02-04
申请号：US16637575
申请日：2018-08-20
申请人： Röhm GmbH
摘要： A process is useful for producing optical molding materials on the basis of methyl methacrylate (MMA), wherein this MMA has been produced by an optimized method and the molding materials feature in particular a very low yellowness index. This MMA has been produced by direct oxidative esterification of methacrolein. In particular, an optimized workup of the reactor output from the oxidative esterification of methacrolein is useful for removing particularly discoloring byproducts. This process moreover has the advantage that fewer demands than described in related art are placed on plant apparatus configuration.
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公开(公告)号：US10858493B2
公开(公告)日：2020-12-08
申请号：US16662168
申请日：2019-10-24
发明人： Matthew Parrott
摘要： A process for chemically recycling polyethylene terephthalate (PET) which utilizes a microwave absorber to optimize glycolytic depolymerization of PET via microwave irradiation. The method of chemically degrading PET to its reactive intermediate, bis(2-hydroxyethyl) terephthalate (BHET), is carried out by: (a) combining PET with ethylene glycol and a catalytic system comprising a catalyst and a microwave absorber to produce a heterogeneous reaction mixture; and then (b) heating by microwave irradiating the reaction mixture to a temperature sufficient to produce a reaction product comprising BHET. The BHET monomer then can be purified and re-polymerized to form new, virgin PET.
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公开(公告)号：US20200317600A1
公开(公告)日：2020-10-08
申请号：US16838593
申请日：2020-04-02
申请人： LG CHEM, LTD.
发明人： Hyun Kyu Kim , Sung Kyu Lee , Jeong Ju Moon , Hyoung Jun , Chan Hyu Jin
摘要： The present disclosure relates to a method and a system for manufacturing an ester-based composition which are characterized in sequentially operating a plurality of batch reactors, and since an ester-based composition is semi-continuously manufactured, the productivity is high and the stability of a batch reactor is secured.
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公开(公告)号：US20200222855A1
公开(公告)日：2020-07-16
申请号：US16637436
申请日：2018-08-07
发明人： Paul D. Bloom , John Inmok Lee
摘要： The present disclosure discloses processes for treating, producing, or producing and treating biodiesel. Products produced with the various processes of the present invention are also disclosed.
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90.发明授权公开(公告)号：US10676422B2
公开(公告)日：2020-06-09
申请号：US15526763
申请日：2015-08-08
发明人： Qilin Zhou , Jianhua Xie , Xiaohui Yang , Lixin Wang
IPC分类号： C07C69/675 , C07C29/149 , C07C31/20 , C07C67/48 , B01J31/18 , B01J31/24 , C07B53/00 , C07B57/00 , C07D211/02 , C07D211/12 , C07D305/06 , C07D309/06 , C07D473/06 , C07D309/30 , C07C69/732 , C07C69/708 , C07C33/26
摘要： The present invention relates to kinetic resolution of racemic δ-hydroxyl ester via asymmetric catalytic hydrogenation and an application thereof. In the presence of chiral spiro pyridyl phosphine ligand Iridium catalyst and base, racemic δ-hydroxyl esters were subjected to asymmetric catalytic hydrogenation to obtain extent optical purity chiral δ-hydroxyl esters and corresponding 1,5-diols. An optically active chiral δ-hydroxyl ester and 1,5-diols can be obtained at very high enantioselectivity and yield with relatively low usage of catalyst. The chiral δ-hydroxyl ester and 1,5-diols obtained by using the method can be used as a critical raw material for asymmetric synthesis of chiral drugs (R)-lisofylline and natural drugs (+)-civet, (−)-indolizidine 167B and (−)-coniine.
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