公开(公告)号：US20200299419A1

公开(公告)日：2020-09-24

申请号：US16756001

申请日：2019-03-15

Applicant: LG Chem, Ltd.

Inventor： Dong Cheol Choe ,  Jae Hoon Choe ,  Hyeon Hui Kim ,  Jong Young Choi ,  Jung Yong Lee ,  Won Jae Lee

IPC: C08F2/60 ,  C07C211/21 ,  C07D207/06 ,  C07D211/14 ,  C07D223/04 ,  C07D241/04 ,  C07D265/30 ,  C07C211/22 ,  C08F2/44

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. In addition, the preparation method according to the present invention may prepare the modification polymerization initiator with high purity in high yield.

公开(公告)号：US11312628B2

公开(公告)日：2022-04-26

申请号：US16348352

申请日：2018-01-25

Applicant: LG CHEM, LTD.

Inventor： Eugene Oh ,  Juhan Kim ,  Ji Eun Kim ,  Jaehong Lee ,  Won Jae Lee

IPC: C01B32/174

Abstract: The present invention relates to a method for enhancing tensile strength of a carbon nanotube (CNT) fiber aggregate, comprising dispersing a CNT fiber aggregate with chlorosulfonic acid (CSA), followed by thermal treatment, wherein a particular magnitude of tension is applied upon the thermal treatment, whereby the CNT fiber aggregate is increased in alignment level and tensile strength.

公开(公告)号：US20190271100A1

公开(公告)日：2019-09-05

申请号：US16320308

申请日：2018-01-24

Applicant: LG Chem, Ltd.

Inventor： Eu Gene Oh ,  Ji Eun Kim ,  Mi Jin Lee ,  Jae Hong Lee ,  Ju Han Kim ,  Won Jong Kwon ,  Won Jae Lee ,  Jin Kyu Lee

IPC: D01F9/127 ,  D01D10/02 ,  C01B32/178 ,  C01B32/162

Abstract: The present invention relates to a carbon nanotube fiber and methods for preparing the same. In one embodiment, a method for preparing a carbon nanotube fiber comprises reacting a carbon source in the presence of a catalyst and a catalytic activator to form carbon nanotube aggregates, contacting the carbon nanotube aggregates with graphene oxide, and forming the carbon nanotube aggregates in contact with the graphene oxide into a carbon nanotube fiber.

公开(公告)号：US09845275B2

公开(公告)日：2017-12-19

申请号：US15028286

申请日：2015-01-15

Applicant: LG CHEM, LTD.

Inventor： Ji Eun Kim ,  Won Jae Lee ,  Yong Jin Choe ,  Won Jong Kwon ,  Hyun Nam ,  Kwon Nam Sohn

IPC: C07C27/12 ,  D01F9/15 ,  C10C3/04

CPC classification number: C07C27/12 ,  C10C3/04 ,  D01F9/15

Abstract: Disclosed are a method of preparing polyaromatic oxide and polyaromatic oxide prepared thereby, wherein the method includes (a) placing a plurality of kinds of polyaromatic hydrocarbons and water in a reactor and then stirring them; (b) increasing the temperature inside the reactor to 150 to 300° C. and then feeding a gas containing 10 wt % or more of oxygen into the reactor to increase the partial pressure of oxygen inside the reactor to 2 to 30 bar; and (c) reacting the plurality of kinds of polyaromatic hydrocarbons with oxygen to oxidize the plurality of kinds of polyaromatic hydrocarbons.

公开(公告)号：US09393544B2

公开(公告)日：2016-07-19

申请号：US14556688

申请日：2014-12-01

Applicant: LG CHEM, LTD.

Inventor： Myungjin Kong ,  Won Jae Lee ,  Yong-Jin Choe

IPC: C07C67/02 ,  B01J19/10 ,  C07D317/24 ,  C07D319/06

CPC classification number: B01J19/10 ,  C07D317/24 ,  C07D319/06

Abstract: This invention relates to a method of preparing an ester compound, including adding carboxylic acid to a mixture of glycerol and acetone in the presence of a sulfuric acid catalyst and applying an ultrasonic wave to induce an esterification reaction, and to an ester compound prepared thereby.

Abstract translation: 本发明涉及一种制备酯化合物的方法，包括在硫酸催化剂和施加超声波诱导酯化反应的存在下，向甘油和丙酮的混合物中加入羧酸，以及由其制备的酯化合物。