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    OLEFIN-BASED POLYMER
    5.
    发明公开
    OLEFIN-BASED POLYMER 审中-公开

    公开(公告)号：EP3699205A1

    公开(公告)日：2020-08-26

    申请号：EP18892305.6

    申请日：2018-12-21

    申请人： LG CHEM, LTD.

    发明人： PARK, In Sung ,  LEE, Eun Jung ,  JU, Hyun Jin ,  PARK, Sang Eun ,  BAE, Kyung Bok ,  LEE, Choong Hoon

    IPC分类号： C08F210/16 ,  C08F4/6592 ,  C08F2/04 ,  C08F2/01 ,  C08F2/38

    摘要： The present invention relates to an olefin-based polymer, wherein (1) the density (d) is 0.850-0.865 g/cc; (2) the melt index (MI) (190°C and 2.16 kg load conditions) is 0.1-3.0 g/10 min; and (3) the hardness, density, and melt temperature (Tm) satisfy mathematical formula 1 and mathematical formula 2 or 3. The olefin-based polymer according to the present invention, which is a low-density olefin-based polymer, has low hardness and thus exhibits improved foam characteristics and impact strength at the time of compounding.

    SECONDARY BATTERY WITH ENHANCED SEALING PERFORMANCE
    6.
    发明授权
    SECONDARY BATTERY WITH ENHANCED SEALING PERFORMANCE 有权

    公开(公告)号：EP2626927B1

    公开(公告)日：2018-12-05

    申请号：EP11830941.8

    申请日：2011-10-07

    申请人： LG Chem, Ltd.

    发明人： KIM, Hong Kue ,  LEE, Seung Tae ,  LEE, Eun Jung ,  KIM, Hak Kyun

    IPC分类号： H01M2/08 ,  H01M2/36 ,  H01M2/04

    CPC分类号： H01M2/367 ,  H01M2/0217 ,  H01M2/08 ,  H01M2/361 ,  H01M2/365 ,  Y10T29/4911

    摘要： Disclosed herein is a secondary battery having an electrode assembly placed in a prismatic container, wherein an upper part of the inside of an electrolyte injection hole formed in a base plate mounted to an open upper end of the prismatic container is configured to have a chamfered structure in which the diameter of the electrolyte injection hole is gradually decreased downward, a lower part of the inside of the electrolyte injection hole is configured to have a non-chamfered structure, the chamfered structure is formed in an irregular shape to increase the length of an electrolyte leakage route along which an electrolyte leaks out of the secondary battery, and, when a sealing member is pressed into the electrolyte injection hole, the sealing member is deformed so as to correspond to an internal structure of the electrolyte injection hole such that the electrolyte injection hole is sealed by the sealing member.