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公开(公告)号：US11260319B2
公开(公告)日：2022-03-01
申请号：US16767830
申请日：2019-08-07
申请人： LG Chem, Ltd.
发明人： Junwon Choi , Dae Hun Kim , Seonyoung Jegal , Ye Hoon Im , Yeu Young Youn
摘要： The present invention provides a solid phase extraction method using a micro device having a dam forming portion including a dam, the solid phase extraction method comprising the steps of: (i) injecting a solvent and a filler into the micro device, moving the solvent to the dam forming portion, the dam allowing the solvent to flow therethrough and preventing the filler from passing therethrough, and adsorbing a material to be separated onto the filler in the dam forming portion; and (ii) extracting, from the filler, the adsorbed material, wherein the micro device is rotated with respect to a central axis during one of steps (i) and (ii), and the rotation of the micro device is performed at an angular velocity defined by equation 1.
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公开(公告)号：US11408864B2
公开(公告)日：2022-08-09
申请号：US16963685
申请日：2019-10-10
申请人： LG Chem, Ltd.
发明人： Seonyoung Jegal , Byoung Hyoun Kim , Dong Hyun Kim , Yura Lee , Hyun Sik You
摘要： A method for securing qualitative and quantitative information of a high molecular weight additive in a polymer resin sample is disclosed herein. In some embodiments, the method includes separating a fraction of a polymer resin sample using size exclusion chromatography (SEC), wherein the fraction corresponding to a high molecular weight additive, pyrolyzing the fraction in a pyrolysis-gas chromatography/mass spectrometer (Py-GC/MS) to obtain a mass spectrum of the pyrolyzed fraction; identifying a structure of the high molecular weight additive by comparing m/z values for fragment peaks in the mass spectrum to m/z values for fragment peaks in a mass spectrum of a standard, and determining the amount of the high molecular weight additive in the polymer resin sample, relative to the total weight of the polymer resin sample by comparing a sum of areas of the fragment peaks to a calibration line of the standard.
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公开(公告)号：US11065557B2
公开(公告)日：2021-07-20
申请号：US16631341
申请日：2018-10-12
申请人： LG Chem, Ltd.
发明人： Seonyoung Jegal , Dae Hun Kim , Byoung Hyoun Kim , Yeu Young Youn , Kyoungjoo Jin , Jun Won Choi , Su Youn Han
摘要： The present invention relates to a micro device for solid phase extraction and more particularly provides a micro device which is configured to perform solid phase extraction by injecting a filler and a solvent and producing a uniform flow of the solvent.
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公开(公告)号：US20210080433A1
公开(公告)日：2021-03-18
申请号：US16963685
申请日：2019-10-10
申请人： LG Chem, Ltd.
发明人： Seonyoung Jegal , Byoung Hyoun Kim , Dong Hyun Kim , Yura Lee , Hyun Sik You
摘要： A method for securing qualitative and quantitative information of a high molecular weight additive in a polymer resin sample is disclosed herein. In some embodiments, the method includes separating a fraction of a polymer resin sample using size exclusion chromatography (SEC), wherein the fraction corresponding to a high molecular weight additive, pyrolyzing the fraction in a pyrolysis-gas chromatography/mass spectrometer (Py-GC/MS) to obtain a mass spectrum of the pyrolyzed fraction; identifying a structure of the high molecular weight additive by comparing m/z values for fragment peaks in the mass spectrum to m/z values for fragment peaks in a mass spectrum of a standard, and determining the amount of the high molecular weight additive in the polymer resin sample, relative to the total weight of the polymer resin sample by comparing a sum of areas of the fragment peaks to a calibration line of the standard.
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公开(公告)号：US20200376410A1
公开(公告)日：2020-12-03
申请号：US16767830
申请日：2019-08-07
申请人： LG Chem, Ltd.
发明人： Junwon Choi , Dae Hun Kim , Seonyoung Jegal , Ye Hoon Im , Yeu Young Youn
IPC分类号： B01D11/02
摘要： The present invention provides a solid phase extraction method using a micro device having a dam forming portion including a dam, the solid phase extraction method comprising the steps of: (i) injecting a solvent and a filler into the micro device, moving the solvent to the dam forming portion, the dam allowing the solvent to flow therethrough and preventing the filler from passing therethrough, and adsorbing a material to be separated onto the filler in the dam forming portion; and (ii) extracting, from the filler, the adsorbed material, wherein the micro device is rotated with respect to a central axis during one of steps (i) and (ii), and the rotation of the micro device is performed at an angular velocity defined by equation 1.
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公开(公告)号：US20200215455A1
公开(公告)日：2020-07-09
申请号：US16631341
申请日：2018-10-12
申请人： LG Chem, Ltd.
发明人： Seonyoung Jegal , Dae Hun Kim , Byoung Hyoun Kim , Yeu Young Youn , Kyoungjoo Jin , Jun Won Choi , Su Youn Han
摘要： The present invention relates to a micro device for solid phase extraction and more particularly provides a micro device which is configured to perform solid phase extraction by injecting a filler and a solvent and producing a uniform flow of the solvent.
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