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公开(公告)号：US20230356195A1
公开(公告)日：2023-11-09
申请号：US18246068
申请日：2021-08-12
发明人： Mee Hye JEONG , Jun Yeong KIM , Da Kyoung YONG , Ji Min HA , Ki Hyun PARK
CPC分类号： B01J23/462 , C07D307/46 , B01J23/02 , B01J23/10 , B01J29/7007 , B01J35/0006 , B01J2523/22 , B01J2523/3725 , B01J2523/821 , B01J2523/25
摘要： Provided is a heterogeneous catalyst for preparing a dicarboxylic acid aromatic heterocyclic compound, the heterogeneous catalyst including an active metal; and a basic metal oxide carrier capable of carrying the active metal and forming a complex by coordinate bonding with the dicarboxylic acid aromatic heterocyclic compound.
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公开(公告)号：US20180186976A1
公开(公告)日：2018-07-05
申请号：US15736432
申请日：2016-06-16
发明人： Do Kyung SUNG , Ki Hyun PARK
摘要： Disclosed is a rubber composition containing main-chain benzoxazine, in which benzoxazine generates no harmful materials during vulcanization and can thus be used in lieu of a phenol novolac resin used as a resin component of a conventional rubber composition, and also in which the use of benzoxazine, especially main-chain benzoxazine having a high molecular weight, is capable of maintaining excellent mechanical properties and exhibiting high flexibility. The rubber composition of the invention can be utilized for a rubber product, especially a tire product.
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公开(公告)号：US20240342689A1
公开(公告)日：2024-10-17
申请号：US18290917
申请日：2021-07-28
发明人： Mee Hye JEONG , Jun Yeong KIM , Da Kyoung YONG , Ji Min HA , Ki Hyun PARK
CPC分类号： B01J23/462 , B01J23/34 , B01J23/52 , B01J23/54 , B01J37/0201 , B01J37/04 , B01J37/08 , B01J2231/70
摘要： The present invention relates to a heterogeneous catalyst for making a dicarboxyl acid aromatic heterocyclic compound and a method for preparing a dicarboxyl acid aromatic heterocyclic compound, and according to the present invention, an oxide with improved yield and purity can be produced by an oxidation reaction of a bio-based aromatic heterocyclic compound under a heterogeneous catalyst.
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公开(公告)号：US20230365746A1
公开(公告)日：2023-11-16
申请号：US18246085
申请日：2021-08-12
发明人： Da Kyoung YONG , Mee Hye JEONG , Jun Yeong kIM , Ji Min HA , Eun Ji Kim , Ki Hyun PARK
IPC分类号： C08G63/83
CPC分类号： C08G63/83
摘要： The present invention provides polyester and a method for preparing same, the polyester including a repeating unit derived from dihydroxyalkyl tetrahydrofuran obtained from biomass; and a repeating unit derived from short-branched aliphatic dicarboxylic acid. Thus, the polyester has a carbon reduction effect and may be utilized as a novel biomass polyethylene terephthalate (PET) for packaging, by having excellent transparency, impact resistance, flexibility and elastic modulus compared to conventional PET.
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公开(公告)号：US20230348664A1
公开(公告)日：2023-11-02
申请号：US18245403
申请日：2021-09-01
发明人： Young Sung SUH , No Woo PARK , Ho Sub KIM , Choong Hee HONG , Kyung Gyu NOH , Ki Hyun PARK
IPC分类号： C08G63/672
CPC分类号： C08G63/672
摘要： The present invention provides a polyester polymer having improved heat discoloration and at the same time, having a high molecular weight.
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公开(公告)号：US20230286887A1
公开(公告)日：2023-09-14
申请号：US17769357
申请日：2020-10-29
发明人： Mee Hye JEONG , Da Kyoung YONG , Ji Min HA , Ki Hyun PARK
IPC分类号： C07C29/145 , B01J37/08 , B01J23/46
CPC分类号： C07C29/145 , B01J37/08 , B01J23/462
摘要： The present invention relates to a method for preparing 1,3-cyclopentanediol by adding a ruthenium catalyst, from which the surface oxide layer is removed, to 4-hydroxy-2-cyclopentenone. The method is simple since 1,3-cyclopentanediol can be prepared in a single step through the use of the catalyst, without forming 3-hydroxycyclopentanone, which is a reaction intermediate, and moreover, the method can not only shorten a reaction time, but can also improve a yield of 1,3-cyclopentanediol.
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公开(公告)号：US20170137391A1
公开(公告)日：2017-05-18
申请号：US15322946
申请日：2015-06-30
发明人： Hee Jin CHO , Do Kyung SUNG , Ki Hyun PARK , Sang Hun PARK , Hyun Soo KAGN
IPC分类号： C07D265/14 , C08G61/12
CPC分类号： C07D265/14 , C08G61/122 , C08G2261/135 , C08G2261/1644 , C08G2261/60 , C08G2261/65 , C08G2261/76 , H05K1/0346 , H05K2201/012
摘要： Disclosed is a polybenzoxazime precursor and a method of preparing the same. The polybenzoxazime precursor is used to prepare a hardened material having improved thermal characteristics, having high thermal and flame-retardant characteristics while maintaining its excellent electrical characteristics, or having high thermal and electrical characteristics, thus being available for use in a copper clad laminate, a semiconductor encapsulate, a printed circuit board, an adhesive, a paint, and a mold.
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公开(公告)号：US20240360059A1
公开(公告)日：2024-10-31
申请号：US18291317
申请日：2022-07-12
发明人： MI SHIN , Ji Min HA , Mee Hye JEONG , Jun Yeong KIM , Da Kyoung YONG , Ki Hyun PARK
CPC分类号： C07C29/175 , B01J21/04 , B01J23/02 , B01J23/462 , B01J35/394 , C07C35/06 , C07C49/395
摘要： Provided is a catalyst for preparing 1,3-cyclopentanediol by hydrogenation of 4-hydroxy-2-cyclopentenone, the catalyst including: a carrier including α-Al2O3; and an active metal supported on the carrier.
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公开(公告)号：US20240287012A1
公开(公告)日：2024-08-29
申请号：US18292406
申请日：2021-07-28
发明人： Mee Hye JEONG , Jun Yeong KIM , Ji Min HA , Da Kyoung YONG , Ki Hyun PARK
IPC分类号： C07D307/54 , C07D307/46
CPC分类号： C07D307/54 , C07D307/46
摘要： The present invention relates to a method for preparing a dicarboxyl acid aromatic heterocyclic compound and a dicarboxyl acid aromatic heterocyclic compound obtained thereby. According to the present invention, an oxide with improved yield and purity can be produced by an oxidation reaction of a bio-based hydroxyl-free aromatic heterocyclic compound under a heterogeneous catalyst.
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10.发明公开公开(公告)号：US20230348666A1
公开(公告)日：2023-11-02
申请号：US18245388
申请日：2021-09-13
发明人： Ho Sub KIM , Kyung Gyu NOH , Young Sung SUH , Choong Hee HONG , Ki Hyun PARK , No Woo PARK
IPC分类号： C08G63/85 , C08G63/676
CPC分类号： C08G63/85 , C08G63/676
摘要： The present invention provides a novel catalyst material used to produce polyester having improved molecular weight and color from a dicarboxylic acid aromatic heterocyclic compound or a derivative thereof.
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