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公开(公告)号：EP4345127A1
公开(公告)日：2024-04-03
申请号：EP23788596.7
申请日：2023-04-12
申请人： LG Chem, Ltd.
发明人： LEE, Hyunyoung , PARK, Jun Beom , KIM, Hyun Cheol
摘要： The present invention relates to a monomer composition for synthesizing recycled plastic which comprises an aromatic diol compound, wherein a ratio of aromatic diol compound derivative impurity according to Equation 1 is 10% or less, the monomer composition has a color coordinate b* of 0.01 to 2, and the monomer composition is recovered from a polycarbonate-based resin, a preparation method thereof, and a recycled plastic, and molded product using the same.
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公开(公告)号：EP4435043A1
公开(公告)日：2024-09-25
申请号：EP23892062.3
申请日：2023-11-17
申请人： LG Chem, Ltd.
发明人： LEE, Hyunyoung , PARK, Jun Beom , KIM, Hyun Cheol
IPC分类号： C08J11/24 , C08J11/16 , C07D317/38 , C07D317/36 , C08J11/18 , C08J11/28
CPC分类号： C07D317/36 , C08J11/24 , C08J11/18 , C08J11/28 , C08J11/16 , C07D317/38
摘要： The present invention relates to a recycled cyclic carbonate composition, comprising an alkylene carbonate, wherein the recycled cyclic carbonate composition further comprises a phenolic compound whose mass ratio measured by 1H NMR is 5 mass% or less relative to a total mass of the composition, and wherein the recycled cyclic carbonate composition is a recovered product from a polycarbonate-based resin, and a method for preparing the same.
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3.发明公开
公开(公告)号：EP4174102A1
公开(公告)日：2023-05-03
申请号：EP21845223.3
申请日：2021-07-22
申请人： LG Chem, Ltd.
发明人： KIM, Sang Hwan , CHOI, Jung Woo , SEO, Ki Seung , SEO, Kwang Su , PARK, Jun Beom , CHO, Won Seup
IPC分类号： C08G18/44 , C08G18/10 , C08F283/00 , C08F2/50 , C08J7/04 , C09D175/14
摘要： The present disclosure provides a photocurable composition, which has excellent coatability and is capable of providing a coating layer having excellent surface quality and thickness uniformity, a coating layer including a cured product of the photocurable composition, and a substrate for a semiconductor process including the coating layer.
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公开(公告)号：EP4435042A1
公开(公告)日：2024-09-25
申请号：EP23892061.5
申请日：2023-11-17
申请人： LG Chem, Ltd.
发明人： LEE, Hyunyoung , PARK, Jun Beom , KIM, Hyun Cheol
IPC分类号： C08J11/24 , C08J11/16 , C07D317/38 , C07D317/36 , C08J11/18 , C08J11/28
CPC分类号： C07D317/36 , C08J11/24 , C08J11/18 , C08J11/28 , C08J11/16 , C07D317/38
摘要： The present invention relates to a method for preparing a recycled cyclic carbonate composition, the method comprising the steps of: adding a polycarbonate-based resin to an organic solvent to prepare a mixed solution; adding an alkylene glycol and a catalyst to the mixed solution to depolymerize the polycarbonate-based resin; removing an aromatic diol compound, an organic solvent, and an alkylene glycol from the depolymerized solution; and recovering an alkylene carbonate from the depolymerized solution from which the aromatic diol compound, the organic solvent, and the alkylene glycol have been removed.
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公开(公告)号：EP4365224A1
公开(公告)日：2024-05-08
申请号：EP23788593.4
申请日：2023-04-12
申请人： LG Chem, Ltd.
发明人： PARK, Jun Beom , LEE, Hyunyoung , KIM, Hyun Cheol
摘要： The present invention relates to a monomer composition for synthesizing recycled plastic which comprises an aromatic diol compound, wherein a ratio of aromatic diol compound derivative impurity according to Equation 1 is 0.5% or less, wherein the aromatic diol compound has a purity of 99.25% or more, and the monomer composition for synthesizing recycled plastic is recovered from a polycarbonate-based resin, a preparation method thereof, and a recycled plastic, and molded product using the same.
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公开(公告)号：EP4345126A1
公开(公告)日：2024-04-03
申请号：EP23788594.2
申请日：2023-04-12
申请人： LG Chem, Ltd.
发明人： PARK, Jun Beom , LEE, Hyunyoung , KIM, Hyun Cheol
摘要： The present invention relates to a monomer composition for synthesizing recycled plastic which comprises an aromatic diol compound, wherein a ratio of aromatic diol compound derivative impurity according to Equation 1 is 2% or less, wherein a yield of the aromatic diol compound according to Equation 2 is 80% or more, and the monomer composition is recovered from a polycarbonate-based resin, a preparation method thereof, and a recycled plastic, and molded product using the same.
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公开(公告)号：EP4279479A1
公开(公告)日：2023-11-22
申请号：EP22898983.6
申请日：2022-11-22
申请人： Lg Chem, Ltd.
发明人： LEE, Hyunyoung , PARK, Jun Beom , KIM, Hyun Cheol
摘要： Provided is a method for preparing an asymmetric linear carbonate, the method comprising: subjecting two kinds of different symmetric linear carbonates to a transesterification reaction in the presence of a metal alkoxide catalyst to prepare an asymmetric linear carbonate, wherein the metal of the metal alkoxide is at least one selected from the group consisting of aluminum (Al), magnesium (Mg), germanium (Ge), gallium (Ga), cobalt (Co), calcium (Ca), hafnium (Hf), iron (Fe), nickel (Ni), niobium (Nb), molybdenum (Mo), lanthanum (La), rhenium (Re), scandium (Sc), silicon (Si), tantalum (Ta), tungsten (W), yttrium (Y), zirconium (Zr) and vanadium (V). Also provided is an asymmetric linear carbonate including the metal alkoxide catalyst.
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公开(公告)号：EP4230614A1
公开(公告)日：2023-08-23
申请号：EP22878674.5
申请日：2022-07-08
申请人： Lg Chem, Ltd.
发明人： PARK, Jun Beom , LEE, Hyunyoung , KIM, Hyun Cheol
摘要： The present disclosure relates to a method for preparing an asymmetric linear carbonate, which comprises subjecting two different symmetrical linear carbonates to a transesterification reaction in the presence of a base catalyst having a heterocyclic structure to prepare an asymmetric linear carbonate.
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公开(公告)号：EP4206178A1
公开(公告)日：2023-07-05
申请号：EP22867518.7
申请日：2022-06-28
申请人： Lg Chem, Ltd.
发明人： PARK, Jun Beom , LEE, Hyunyoung , KIM, Hyun Cheol
摘要： The present specification relates to a method for preparing an asymmetric linear carbonate.
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