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1.发明公开公开(公告)号：US20240002329A1
公开(公告)日：2024-01-04
申请号：US18253887
申请日：2021-11-05
发明人： Wang Gyu Kim , Mi Hwa Baek , Jong Myung Choi , Eun Hye Han , Jin Hyung Kim
CPC分类号： C07C68/06 , B01J31/0287 , B01J23/04 , B01J2231/49 , B01J2531/12
摘要： The present invention relates to a method of preparing a heterogeneous linear carbonate, the method including performing a transesterification reaction of dimethyl carbonate (DMC) and ethanol (EtOH) in the presence of a catalyst, wherein the catalyst is one or more selected from the group consisting of lithium methoxide (LME), lithium ethoxide (LEE), sodium methoxide (SME), sodium hydroxide (NaOH), and a mixture thereof, and the catalyst is input in a state of being dissolved in a sulfoxide-based solvent.
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公开(公告)号：US20240002330A1
公开(公告)日：2024-01-04
申请号：US18254094
申请日：2021-11-04
发明人： Wang Gyu Kim , Mi Hwa Baek , Jong Myung Choi , Eun Hye Han , Jin Hyung Kim
CPC分类号： C07C68/06 , B01J31/0287 , C07C68/08 , B01J2531/12 , B01J2231/49
摘要： Provided herein is a method of preparing a heterogeneous linear carbonate, including: performing a transesterification reaction of dimethyl carbonate (DMC) and ethanol (EtOH) in the presence of a catalyst; and filtering a composite obtained by the transesterification reaction through a filter.
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公开(公告)号：US20240018086A1
公开(公告)日：2024-01-18
申请号：US18254262
申请日：2021-11-04
发明人： Jin Hyung Kim , Mi Hwa Baek , Wang Gyu Kim , Jong Myung Choi , Eun Hye Han
IPC分类号： C07C68/065 , B01J31/08
CPC分类号： C07C68/065 , B01J31/08 , B01J2231/49 , B01J2531/002
摘要： The present specification provides a method of preparing a heterogeneous linear carbonate, including transesterifying an aliphatic alcohol and a symmetric linear carbonate in the presence of a catalyst, wherein the catalyst is a porous type basic ion exchange resin having an exchange capacity of 1 (eq/l-wet resin) or more and 1.5 (eq/l-wet resin) or less. The preparation method of the present specification provides a method of preparing a heterogeneous, symmetric linear carbonate and asymmetric linear carbonate in high yield without a process of reactive distillation.
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公开(公告)号：US20230406810A1
公开(公告)日：2023-12-21
申请号：US18254247
申请日：2021-11-05
发明人： Eun Hye Han , Wang Gyu Kim , Mi Hwa Baek , Jong Myung Choi , Jin Hyung Kim
CPC分类号： C07C68/06 , B01J31/10 , B01J2231/49 , B01J2531/002
摘要： The present invention provides a method of preparing a heterogeneous linear carbonate, the method including transesterifying an aliphatic alcohol and a symmetric linear carbonate in the presence of a catalyst, wherein the catalyst is an acidic ion exchange resin, and a mass ratio of the aliphatic alcohol and the symmetric linear carbonate (aliphatic alcohol:symmetric linear carbonate) is 1:10 or more and 50:1 or less. The preparation method of the present specification provides a method of preparing a heterogeneous, symmetric linear carbonate and asymmetric linear carbonate in high yield without a process of reactive distillation, and is economical because a product and a catalyst can be easily separated.
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5.发明公开公开(公告)号：US20230406809A1
公开(公告)日：2023-12-21
申请号：US18254010
申请日：2021-11-04
发明人： Jong Myung Choi , Mi Hwa Baek , Wang Guy Kim , Eun Hye Han , Jin Hyung Kim
CPC分类号： C07C68/06 , B01J31/068 , C07C2531/06 , B01J2231/49
摘要： The present invention is directed to providing a method of preparing a heterogeneous linear carbonate, including: performing a transesterification reaction of dimethyl carbonate (DMC) and ethanol (EtOH) in the presence of a catalyst, wherein the catalyst is an amine-based compound having a boiling point of 150° C. or more.
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