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    METHOD FOR PREPARING GRAFT POLYMER
    1.
    发明公开
    METHOD FOR PREPARING GRAFT POLYMER 审中-公开

    公开(公告)号：EP3929223A1

    公开(公告)日：2021-12-29

    申请号：EP20865696.7

    申请日：2020-09-02

    申请人： LG CHEM, LTD.

    发明人： CHOI, Jeong Su ,  LEE, Won Seok ,  LEE, Roo Da ,  PARK, Sang Hoo ,  LEE, Jong Ju

    IPC分类号： C08F285/00 ,  C08F279/02 ,  C08F2/44 ,  C08K5/3475

    摘要： Provided is a method of preparing a graft polymer, which includes: adding a diene-based rubber polymer, a first monomer mixture including a (meth)acrylate-based monomer and an aromatic vinyl-based monomer, and a reactive ultraviolet (UV) stabilizer to a reactor and carrying out polymerization to prepare a composite rubber polymer; and graft-polymerizing a second monomer mixture including a (meth)acrylate-based monomer, an aromatic vinyl-based monomer, and a vinyl cyanide-based monomer to the composite rubber polymer to prepare a graft polymer, wherein the reactive UV stabilizer is added in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the sum of the diene-based rubber polymer, the first monomer mixture, and the second monomer mixture.

    GRAFT COPOLYMER, PREPARATION METHOD THEREFOR, THERMOPLASTIC RESIN COMPOSITION CONTAINING SAME, AND MOLDED PRODUCT
    2.
    发明公开
    GRAFT COPOLYMER, PREPARATION METHOD THEREFOR, THERMOPLASTIC RESIN COMPOSITION CONTAINING SAME, AND MOLDED PRODUCT 审中-公开

    公开(公告)号：EP3409702A1

    公开(公告)日：2018-12-05

    申请号：EP18744366.8

    申请日：2018-01-02

    申请人： LG Chem, Ltd.

    发明人： JANG, Seok Goo ,  CHOI, Jeong Su ,  LEE, Won Seok ,  LEE, Roo Da ,  PARK, Sang Hoo ,  OK, Hye Jeong ,  KIM, Ho Hoon ,  SHIM, Hyung Seop ,  YOO, Keun Hoon

    IPC分类号： C08F279/02 ,  C08L55/02 ,  C08K5/098 ,  C08F2/24 ,  C08F2/38 ,  C08F2/44

    CPC分类号： C08F2/24 ,  C08F2/38 ,  C08F2/44 ,  C08F279/02 ,  C08K5/098 ,  C08L55/02

    摘要： The present invention relates to a graft copolymer having excellent thermal stability, a method of preparing the graft copolymer, a thermoplastic resin composition including the graft copolymer, and a molded part including the thermoplastic resin composition. More specifically, the present invention relates to a graft copolymer having a core-shell structure and having excellent thermal stability, which is prepared according to an emulsion polymerization method, in which a metal salt of sorbic acid is included in reactants in a specific amount and is used as an emulsifier. According to the method, thermal stability of a graft copolymer can be improved by using the metal salt of sorbic acid, which can be easily removed in a dehydration process, instead of a conventional emulsifier, which remains in a reaction product after completion of emulsion polymerization and lowers thermal stability of a prepared graft copolymer.
    In addition, according to the present invention, since the thermoplastic resin composition of the present invention includes the graft copolymer having excellent thermal stability, the thermoplastic resin composition and the molded part manufactured using the thermoplastic resin composition have excellent physical properties, such as impact strength, fluidity, and transparency. Furthermore, the degree of discoloration that may occur when the resin composition or the molded part is allowed to stay in an injection molding machine or stay at a high temperature for a long period of time may be reduced.

    THERMOPLASTIC RESIN COMPOSITION AND MOLDED PRODUCT COMPRISING SAME
    4.
    发明公开
    THERMOPLASTIC RESIN COMPOSITION AND MOLDED PRODUCT COMPRISING SAME 审中-公开
    热塑性树脂组合物和包含该组合物的模制产品

    公开(公告)号：EP3235868A1

    公开(公告)日：2017-10-25

    申请号：EP16873284.0

    申请日：2016-12-01

    申请人： LG Chem, Ltd.

    发明人： JANG, Seok Goo ,  CHOI, Jeong Su ,  YOO, Keun Hoon ,  LEE, Won Seok ,  LEE, Roo Da ,  PARK, Sang Hoo ,  KIM, Ho Hoon ,  SHIM, Hyung Seop

    IPC分类号： C08L51/06 ,  C08L33/08 ,  C08K3/00 ,  C08K3/08 ,  C08J5/00

    CPC分类号： C08L33/12 ,  A01N59/16 ,  C08J5/00 ,  C08L33/08 ,  C08L33/20 ,  C08L51/06 ,  C08L2201/10 ,  C08L51/04 ,  C08K3/015 ,  C08K9/12

    摘要： The present invention relates to a thermoplastic resin composition and a molded article including the same. More particularly, the present invention relates to a thermoplastic resin composition including 100 parts by weight of a base resin that includes an acrylic graft copolymer and an acrylic non-graft copolymer; and greater than 0.3 parts by weight and less than 1.2 parts by weight of a zinc-based antimicrobial agent, and a molded article including the same, wherein the zinc-based antimicrobial agent has an average particle diameter of greater than 3 µm to 30 µm.
    In accordance with the present invention, a thermoplastic resin composition providing superior transparency and excellent initial antimicrobial activity and persistent antimicrobial activity while providing the same mechanical properties as existing resin compositions, and a molded article including the same are provided.

    摘要翻译： 本发明涉及热塑性树脂组合物和包含其的模塑制品。 更具体地说，本发明涉及一种热塑性树脂组合物，其包含100重量份的包含丙烯酸类接枝共聚物和丙烯酸类非接枝共聚物的基础树脂; 以及大于0.3重量份且小于1.2重量份的锌基抗菌剂和包含其的模制品，其中所述锌基抗菌剂具有大于3μm至30μm的平均粒径 。 根据本发明，提供了一种热塑性树脂组合物，该组合物在提供与现有树脂组合物相同的机械性能的同时提供优异的透明度和优异的初始抗微生物活性和持久的抗微生物活性，以及​​包含该热塑性树脂组合物的模塑制品。

    THERMOPLASTIC RESIN COMPOSITION
    8.
    发明公开
    THERMOPLASTIC RESIN COMPOSITION 审中-公开

    公开(公告)号：EP4219622A1

    公开(公告)日：2023-08-02

    申请号：EP22849783.0

    申请日：2022-07-19

    申请人： Lg Chem, Ltd.

    发明人： CHOI, Jeong Su ,  LEE, Won Seok ,  LEE, Roo Da ,  PARK, Sang Hoo ,  LEE, Jong Ju

    IPC分类号： C08L33/20 ,  C08L55/02 ,  C08L25/12

    摘要： The present invention relates to a thermoplastic resin composition which includes: a graft polymer including a rubber polymer having a gel content of 0 to 10 wt% and including an aromatic vinyl-based monomer unit and a diene-based monomer unit; and a shell including a (meth)acrylate-based monomer unit and an aromatic vinyl-based monomer unit, which are grafted to the rubber polymer; and a non-grafted polymer including 90 wt% or more of a (meth)acrylate-based monomer unit.

    THERMOPLASTIC RESIN COMPOSITION
    9.
    发明公开
    THERMOPLASTIC RESIN COMPOSITION 审中-公开

    公开(公告)号：EP3848414A1

    公开(公告)日：2021-07-14

    申请号：EP19856706.7

    申请日：2019-09-05

    申请人： LG CHEM, LTD.

    发明人： CHOI, Jeong Su ,  YOO, Keun Hoon ,  LEE, Won Seok ,  LEE, Roo Da ,  LEE, Jong Ju

    IPC分类号： C08L33/08 ,  C08L51/04 ,  C08L25/14 ,  C08K5/11 ,  C08F279/04 ,  C08F279/06 ,  C08K5/00 ,  C08K5/092

    摘要： The present invention provides a thermoplastic resin composition which includes: A-1) a first copolymer including a first conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer unit, and an aromatic vinyl-based monomer unit, wherein the first conjugated diene-based polymer has an average particle diameter of 0.05 to 0.2 µm; A-2) a second copolymer including a second conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer unit, and an aromatic vinyl-based monomer unit, wherein the second conjugated diene-based polymer has an average particle diameter of 0.23 to 0.5 µm; B) a third copolymer including an alkyl (meth)acrylate-based monomer unit and an aromatic vinyl-based monomer unit; and C) a plasticizer having a viscosity of 700 to 10,000 cP, wherein the plasticizer is included at 0.3 to 5 wt%. The thermoplastic resin composition is excellent in all of transparency, impact resistance, and flowability.