公开(公告)号：US08883924B2

公开(公告)日：2014-11-11

申请号：US13964920

申请日：2013-08-12

Applicant: LG Chem, Ltd.

Inventor： Houng Sik Yoo ,  Jin Young Ryu ,  Woo Sung Kim ,  Han Na Lee ,  Eun Joo Choi ,  Hyeon Choi

IPC: C08L27/10 ,  C08L43/00 ,  C08L101/02 ,  C08J5/00 ,  C08L35/04 ,  C08L25/04 ,  C08L33/04

CPC classification number: C08L35/04 ,  C08F283/12 ,  C08J3/28 ,  C08J5/00 ,  C08J2333/12 ,  C08J2443/04 ,  C08L25/04 ,  C08L33/04 ,  C08L33/12 ,  C08L101/02 ,  C08L101/12 ,  C08L2312/00 ,  C09D133/14 ,  C09D133/18 ,  Y10T428/2995 ,  Y10T428/2998 ,  Y10T428/31536 ,  C08L83/04 ,  C08F220/14 ,  C08F212/08 ,  C08F236/06 ,  C08F220/44 ,  C08L51/085

Abstract: Provided is a resin blend including a first resin and a second resin, the second resin having a hydrophobic functional group in a side chain and having a surface energy difference of 0.1 to 20 mN/m from the first resin at 25° C., the resin blend being capable of forming a layer separation structure. Also, provided are a pellet, a method for preparing the same, and a resin molding article having a specific layer separation structure. The resin blend may not only improve mechanical properties and surface hardness of the molding article but also shorten process time, increase productivity and reduce production cost by omitting an additional surface coating step.

Abstract translation: 提供一种包含第一树脂和第二树脂的树脂共混物，所述第二树脂在侧链中具有疏水官能团，并且在25℃下与第一树脂的表面能差为0.1至20mN / m， 树脂共混物能够形成层分离结构。 此外，还提供了颗粒，其制备方法和具有特定层分离结构的树脂模塑制品。 树脂混合物不仅可以改善模塑制品的机械性能和表面硬度，而且还可以通过省略额外的表面涂覆步骤缩短加工时间，提高生产率并降低生产成本。

公开(公告)号：US11542164B2

公开(公告)日：2023-01-03

申请号：US17049477

申请日：2019-06-07

Applicant: LG CHEM, LTD.

Inventor： Dong Hyun Kim ,  Houng Sik Yoo ,  Jin Myung Cha ,  Gye Min Kwon ,  Hyun Sik Chae ,  Dong Hyun Cho ,  Sang Hoon Choy ,  Hyeon Choi ,  Hyung Suk Cho

IPC: C01B32/174 ,  H01M4/62 ,  B82Y30/00 ,  B82Y35/00 ,  B82Y40/00

Abstract: The present invention relates to a carbon nanotube dispersion including carbon nanotubes, a polymer dispersant containing an amine, a phenolic compound including two or more aromatic rings, and an aqueous solvent, wherein the polymer dispersant and the phenolic compound including two or more aromatic rings are included in a weight ratio of 100:1 to 100:90, and having low viscosity and a small change of viscosity over time.

公开(公告)号：US11283058B2

公开(公告)日：2022-03-22

申请号：US16495170

申请日：2018-03-22

Applicant: LG Chem, Ltd.

Inventor： Byoung Hoon Ahn ,  Houng Sik Yoo ,  Gye Min Kwon ,  Sang Hoon Choy

IPC: H01M4/00 ,  H01M4/04 ,  H01M4/36 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M4/66 ,  H01M4/75 ,  B82Y30/00 ,  H01M10/056 ,  H01M4/02

Abstract: A method of preparing a slurry composition for a secondary battery positive electrode includes preparing a positive electrode active material pre-dispersion by mixing a lithium iron phosphate-based positive electrode active material, a dispersant, and a solvent, and preparing a slurry for a positive electrode by further mixing a conductive agent, a binder, and an additional solvent with the positive electrode active material pre-dispersion is provided. A positive electrode for a secondary battery which is prepared by using the same method, and a lithium secondary battery including the positive electrode are also provided.

公开(公告)号：US11038175B2

公开(公告)日：2021-06-15

申请号：US16338154

申请日：2018-03-22

Applicant: LG Chem, Ltd.

Inventor： Byoung Hoon Ahn ,  Houng Sik Yoo ,  Chang Wan Koo ,  Hyun Chul Ha ,  Sang Hoon Choy ,  Jong Won Lee ,  Dong Hyun Kim ,  Gye Min Kwon

IPC: H01M4/62 ,  H01M4/136 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/02

Abstract: The present invention relates to a positive electrode active material pre-dispersion composition which includes a lithium iron phosphate-based positive electrode active material, a dispersant, and a solvent, wherein the dispersant includes a hydrogenated nitrile butadiene rubber (HNBR), a slurry composition for a secondary battery positive electrode which is prepared by using the positive electrode active material pre-dispersion composition, a positive electrode for a secondary battery, and a lithium secondary battery including the positive electrode.

公开(公告)号：US20180233734A1

公开(公告)日：2018-08-16

申请号：US15751067

申请日：2017-03-24

Applicant: LG Chem, Ltd.

Inventor： Byoung Hoon Ahn ,  Sang Hoon Choy ,  Houng Sik Yoo ,  Ki Won Sung

IPC: H01M4/1391 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/131 ,  H01M4/505

Abstract: The present invention provides a composition for forming a positive electrode of a secondary battery which includes a positive electrode active material, a conductive material, and a dispersing agent, in which the conductive material includes a carbon-based material having a specific surface area of 130 m2/g or more and an oil absorption number of 220 ml/100g or more at 0.1 wt % to 2 wt % with respect to the total weight of the composition for forming a positive electrode, and the dispersing agent is introduced into the conductive material to form a conductive material-dispersing agent composite, and the conductive material-dispersing agent composite has a particle size distribution D50 of 0.8 μm to 1.2 μm, a positive electrode for a secondary battery and a secondary battery, which are manufactured using the same.

公开(公告)号：US09650511B2

公开(公告)日：2017-05-16

申请号：US14506210

申请日：2014-10-03

Applicant: LG CHEM, LTD.

Inventor： Houng Sik Yoo ,  Jin Young Ryu ,  Woo Sung Kim ,  Han Na Lee ,  Eun Joo Choi ,  Hyeon Choi

IPC: C08L27/10 ,  C08L35/04 ,  C08J5/00 ,  C08L25/04 ,  C08L33/04 ,  C08L101/02 ,  C09D133/14 ,  C09D133/18 ,  C08J3/28 ,  C08L33/12 ,  C08F283/12 ,  C08L101/12

CPC classification number: C08L35/04 ,  C08F283/12 ,  C08J3/28 ,  C08J5/00 ,  C08J2333/12 ,  C08J2443/04 ,  C08L25/04 ,  C08L33/04 ,  C08L33/12 ,  C08L101/02 ,  C08L101/12 ,  C08L2312/00 ,  C09D133/14 ,  C09D133/18 ,  Y10T428/2995 ,  Y10T428/2998 ,  Y10T428/31536 ,  C08L83/04 ,  C08F220/14 ,  C08F212/08 ,  C08F236/06 ,  C08F220/44 ,  C08L51/085

Abstract: Provided is a resin blend including a first resin and a second resin, the second resin having a hydrophobic functional group in a side chain and having a surface energy difference of 0.1 to 20 mN/m from the first resin at 25° C., wherein the resin blend is capable of forming a layer separation structure. Also, provided are a pellet, a method for preparing the same, and a resin molding article having a specific layer separation structure. The resin blend may not only improve mechanical properties and surface hardness of the molding article but also shorten process time, increase productivity and reduce production cost by omitting an additional surface coating step.

公开(公告)号：US09644086B2

公开(公告)日：2017-05-09

申请号：US13688180

申请日：2012-11-28

Applicant: LG CHEM, LTD.

Inventor： Jin Young Ryu ,  Houng Sik Yoo ,  Hak Shin Kim ,  Young Jun Hong ,  Chong Kyu Shin ,  Eun Joo Choi

IPC: C08L55/02 ,  C08L33/16 ,  C08L33/12 ,  C08L37/00 ,  C08L9/06 ,  C08L9/00 ,  C08L29/04 ,  B32B3/02 ,  B32B27/08 ,  C08J3/00 ,  C08J5/00 ,  C08L33/04 ,  C08L101/00 ,  C08L101/12 ,  B29C47/00 ,  B29C47/06 ,  C08L25/12 ,  G01N21/3563 ,  B29K29/00 ,  B29K33/00 ,  B29K105/00

CPC classification number: C08L9/06 ,  B29C47/0004 ,  B29C47/065 ,  B29K2029/04 ,  B29K2033/12 ,  B29K2105/0088 ,  B29K2105/0094 ,  B32B3/02 ,  B32B27/08 ,  C08J3/005 ,  C08J5/00 ,  C08J2300/00 ,  C08J2300/22 ,  C08J2323/06 ,  C08J2400/00 ,  C08J2400/22 ,  C08L9/00 ,  C08L25/12 ,  C08L29/04 ,  C08L33/04 ,  C08L33/12 ,  C08L33/16 ,  C08L37/00 ,  C08L55/02 ,  C08L101/00 ,  C08L101/12 ,  C08L2201/02 ,  G01N21/3563 ,  Y10T428/239 ,  Y10T428/2998 ,  Y10T428/31504

Abstract: Provided are a resin blend for melt processing, a pellet and a method of preparing a resin article using the same. The resin blend may include a first resin, and a second resin having a difference in solubility parameter from the first resin at 25° C. of 0.001 to 10 (J/cm3)1/2. The resin blend can improve mechanical and surface characteristics of a resin article. Further, since coating or plating is not required for manufacturing a resin article, a manufacturing time and/or cost can be reduced, and productivity can be increased.