公开(公告)号：US11421053B2

公开(公告)日：2022-08-23

申请号：US16765028

申请日：2018-11-13

申请人： LG Chem, Ltd.

发明人： Su Hwa Kim ,  Hyo Jin Bae ,  Sung Ho Park ,  Soo Young Choi ,  Jeong Heon Ahn

IPC分类号： C08F36/06 ,  C08F8/30

摘要： A conjugated diene-based polymer catalyzed with a lanthanide rare earth element, and having high linearity and improved compounding properties, and a method for preparing the same are provided. The conjugated diene-based polymer catalyzed with a lanthanide rare earth element has high linearity, and if applied to a rubber composition, may show excellent processability, tensile strength and viscoelasticity.

公开(公告)号：US11312798B2

公开(公告)日：2022-04-26

申请号：US16763149

申请日：2017-12-22

申请人： LG Chem, Ltd.

发明人： Soo Young Choi ,  Suk Joon Yoo ,  Jeong Heon Ahn ,  Sung Ho Park ,  Suk Youn Kang

IPC分类号： C08F36/04 ,  C08F36/06 ,  C08F36/08 ,  C08F136/06 ,  C08F2/00 ,  C08F4/54 ,  C08F4/44

摘要： The present invention relates to a method of preparing a conjugated diene-based polymer by continuous polymerization using two or more reactors, and relates to a method of preparing a conjugated diene-based polymer which is capable of providing a conjugated diene-based polymer having improved Mooney viscosity and excellent cis 1,4 bond content and linearity, by controlling the injection amount of a conjugated diene-based monomer to each reactor in a specific ratio and resolving the deterioration phenomenon of physical properties, which might be generated in continuous reaction.

公开(公告)号：US10556976B2

公开(公告)日：2020-02-11

申请号：US15554907

申请日：2016-06-24

申请人： LG Chem, Ltd.

发明人： Suk Youn Kang ,  Hyo Jin Bae ,  Sung Ho Park ,  Jeong Heon Ahn ,  Ji Eun Kim ,  Kyoung Hwan Oh

IPC分类号： C08F4/54 ,  C08K5/00 ,  C08F136/04 ,  B60C1/00 ,  C08F36/04 ,  C08F4/08 ,  C08F4/609 ,  C08L9/00 ,  C08K5/544 ,  C08F210/12 ,  C08F136/06 ,  C08K5/57 ,  C08F8/32 ,  C08F8/42

摘要： The present invention provides a catalyst composition including a functionalizing agent of the following Formula 1 together with a rare earth metal compound, an alkylating agent, and a halogen compound, having good catalytic activity and polymerization reactivity and useful for the preparation of a conjugated diene-based polymer having high linearity and excellent processability, and a conjugated diene-based polymer prepared using the catalyst composition. (X1)a—N—(X2)3-a  [Formula 1] In Formula 1, a, X1, and X2 are the same as defined in the disclosure.