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公开(公告)号：US10266475B2
公开(公告)日：2019-04-23
申请号：US15752181
申请日：2017-01-31
Inventor： Won Jae Lee , Dong Su Song , Yong Jin Choe , Hyun Joo Lee , Min Su Kim
IPC: C07C51/25 , C07C51/44 , C07C51/50 , C07C57/04 , B01J23/44 , B01J23/58 , B01J23/60 , B01J23/66 , B01J23/68 , B01J23/74 , B01J23/78 , B01J23/80 , B01J23/89 , B01J35/00 , B01J35/02 , B01J35/08 , B01J37/00 , B01J37/02 , B01J23/46 , B01J23/52 , B01J37/16
Abstract: A method for preparing acrylic acid, more specifically, to a method for preparing acrylic acid under a neutral condition at high yield in a short time without using a base, unlike the prior art in which a base is essentially used. The acrylic acid is produced using a supported catalyst having a specific composition when preparing acrylic acid by oxidation of allyl alcohol. Particularly, the preparation method can recover acrylic acid rather than acrylic acid salt as a final product, and thus has an advantage that the overall process cost can be reduced by eliminating essential processes in the prior art, such as ion exchange after the acidification process required for the conversion of acrylic acid salt to acrylic acid.
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公开(公告)号：US11618687B2
公开(公告)日：2023-04-04
申请号：US16955270
申请日：2019-04-09
Applicant: LG Chem, Ltd.
Inventor： Byung Soo Kang , Hyun Jik Lee , Won Jae Lee , Chui Haeng Lee , Young Min Lim
IPC: C01D15/00
Abstract: The present invention relates to a method for preparing a lithium bis(fluorosulfonyl)imide salt, including a step of dissolving bis(chlorosulfonyl)imide in an organic solvent in a non-glass vessel to prepare a first reaction solution; a step of injecting lithium fluoride (LiF) to the first reaction solution in the non-glass vessel and refluxing while heating to prepare a second reaction solution; a step of separating a product including a lithium bis(fluorosulfonyl)imide salt and the organic solvent from the second reaction solution; and a step of obtaining the lithium bis(fluorosulfonyl)imide salt in a solid phase from the product, wherein the organic solvent is at least one or more selected from the group consisting of ethyl acetate, butyl acetate, chloroform, dichloromethane, dichloroethane, benzene, xylene and acetonitrile.
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3.发明申请公开(公告)号：US20200079797A1
公开(公告)日：2020-03-12
申请号：US16467215
申请日：2018-10-12
Applicant: LG Chem, Ltd.
Inventor： Jung Yong Lee , Dong Cheol Choe , Won Jae Lee , Jae Hoon Choe , Hyeon Hui Kim , Jong Young Choi
Abstract: The present invention relates to a method for preparing a modification polymerization initiator with a high conversion ratio by minimizing side reactions. According to the method for preparing a modification polymerization initiator, a modification polymerization initiator which may easily initiate polymerization and provide a polymer with a functional group having affinity with a filler, may be prepared. Particularly, by performing the method using a continuous reactor, the production of by-products may be decreased, and as a result, the conversion ratio may be increased and a modification polymerization initiator with high purity may be prepared in a high yield.
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公开(公告)号：US09487460B2
公开(公告)日：2016-11-08
申请号：US14893304
申请日：2014-06-27
Applicant: LG CHEM, LTD.
Inventor： Won Jae Lee , Myungjin Kong , Yong-Jin Choe , Hyun Nam
Abstract: Disclosed are a method of preparing allyl alcohol and allyl alcohol prepared thereby. The method of preparing allyl alcohol includes adding glycerol with formic acid in an amount of 0.8˜2 equivalents relative to 1 equivalent of glycerol, and increasing a reaction temperature to 220˜260° C. from room temperature at a heating rate of 2.0˜7.0° C./min so that glycerol and formic acid are reacted.
Abstract translation: 公开了制备由此制备的烯丙醇和烯丙醇的方法。 制备烯丙醇的方法包括相对于1当量甘油将甘油与甲酸相加的量为0.8〜2当量，并将反应温度从室温以2.0〜7.0的升温速度提高至220〜260℃ °C / min，使甘油和甲酸反应。
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公开(公告)号：US09120718B1
公开(公告)日：2015-09-01
申请号：US14431648
申请日：2014-06-27
Applicant: LG CHEM, LTD.
Inventor： Dae Sung Kim , Won Jae Lee , Myungjin Kong , Yong-Jin Choe , Hyun Nam
IPC: C07C27/00 , C07C29/00 , C07C29/147
CPC classification number: C07C29/147 , C07C29/60 , C07C33/03
Abstract: Disclosed is a method for preparing allyl alcohol, wherein glycerol and formic acid are reacted under specific synthesis conditions, thus remarkably increasing the concentration of allyl alcohol in the liquid reaction products and minimizing the production of allyl formate byproduct and the production of unreacted formic acid.
Abstract translation: 公开了一种制备烯丙醇的方法，其中甘油和甲酸在特定的合成条件下反应，从而显着提高了液体反应产物中烯丙醇的浓度，并使甲酸烯丙酯副产物的产生和未反应的甲酸的生成最小化。
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Patent Agency Ranking
公开(公告)号：US11214643B2
公开(公告)日：2022-01-04
申请号：US16756023
申请日：2019-06-19
Applicant: LG Chem, Ltd.
Inventor： Dong Cheol Choe , Jae Hoon Choe , Jung Yong Lee , Hyeon Hui Kim , Jong Young Choi , Won Jae Lee
IPC: C07F1/02 , C08F236/10
Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time.
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7.发明授权Heterogeneous catalyst for preparing acrylic acid from allyl alcohol, and method of preparing acrylic acid from allyl alcohol using the same 有权用于由烯丙醇制备丙烯酸的非均相催化剂，以及使用烯丙醇由烯丙醇制备丙烯酸的方法公开(公告)号：US09458079B2
公开(公告)日：2016-10-04
申请号：US14527314
申请日：2014-10-29
Inventor： Dae Sung Kim , Won Jae Lee , Yong-Jin Choe , Myungjin Kong , Hyunjoo Lee , Sungpil Yang
CPC classification number: C07C51/25 , B01J23/66 , B01J35/0013 , B01J35/006 , C07C57/04
Abstract: The present invention relates to a heterogeneous catalyst for preparing acrylic acid from allyl alcohol, and a method of preparing acrylic acid from allyl alcohol using the same. More particularly, the present invention relates to a method of preparing acrylic acid from allyl alcohol at a high yield by performing a liquid phase reaction in the presence of a heterogeneous catalyst including gold supported on a carrier.
Abstract translation: 本发明涉及由烯丙醇制备丙烯酸的非均相催化剂及其制备方法。 更具体地说，本发明涉及通过在负载在载体上的金的多相催化剂存在下进行液相反应，以高产率从烯丙醇制备丙烯酸的方法。
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公开(公告)号：US20150246861A1
公开(公告)日：2015-09-03
申请号：US14431648
申请日：2014-06-27
Applicant: LG CHEM, LTD.
Inventor： Dae Sung Kim , Won Jae Lee , Myungjin Kong , Yong-Jin Choe , Hyun Nam
IPC: C07C29/147
CPC classification number: C07C29/147 , C07C29/60 , C07C33/03
Abstract: Disclosed is a method for preparing allyl alcohol, wherein glycerol and formic acid are reacted under specific synthesis conditions, thus remarkably increasing the the concentration of allyl alcohol in the liquid reaction products and minimizing the production of allyl formate byproduct and the production of unreacted formic acid.
Abstract translation: 公开了一种制备烯丙醇的方法，其中甘油和甲酸在特定的合成条件下反应，从而显着增加了液体反应产物中烯丙醇的浓度，并使甲酸烯丙酯副产物的产生和未反应的甲酸的产生最小化 。
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公开(公告)号：US11845662B2
公开(公告)日：2023-12-19
申请号：US16464488
申请日：2018-09-04
Applicant: LG CHEM, LTD.
Inventor： Eugene Oh , Youngjin Yi , Juhan Kim , Ji Eun Kim , Jun Won Choi , Won Jae Lee , Ye Hoon Im
IPC: C01B32/164 , C01B32/162 , D01F9/127
CPC classification number: C01B32/164 , C01B32/162 , D01F9/1272 , C01P2004/51 , D10B2401/063
Abstract: The present invention relates to a method for preparing a carbon nanotube fiber which is a continuous array of carbon nanotube. The present invention enables minimization of rotational flow inside a tube reactor and thus can facilitate enhanced tensile strength of the prepared carbon nanotube fiber.
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公开(公告)号：US11254801B2
公开(公告)日：2022-02-22
申请号：US16483235
申请日：2018-08-21
Applicant: LG Chem, Ltd.
Inventor： Jung Yong Lee , Jae Hoon Choe , Dong Cheol Choe , Jong Young Choi , Won Jae Lee , Hyeon Hui Kim
Abstract: The present invention relates to a modified polymerization initiator for a conjugated diene-based polymer, and a modified conjugated diene-based polymer including a functional group derived from the modified polymerization initiator.
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