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    METHOD OF PREPARING GRAFT POLYMER
    2.
    发明申请
    METHOD OF PREPARING GRAFT POLYMER 有权

    公开(公告)号：US20220185933A1

    公开(公告)日：2022-06-16

    申请号：US17442416

    申请日：2020-09-02

    Applicant: LG CHEM, LTD.

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

    IPC: C08F253/00 ,  C08L33/06

    Abstract: 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.

    THERMOPLASTIC RESIN COMPOSITION
    3.
    发明申请
    THERMOPLASTIC RESIN COMPOSITION 有权

    公开(公告)号：US20210115242A1

    公开(公告)日：2021-04-22

    申请号：US17047374

    申请日：2019-09-05

    Applicant: LG CHEM, LTD.

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

    IPC: C08L51/04 ,  C08L33/08 ,  C08L25/14

    Abstract: 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.

    THERMOPLASTIC RESIN COMPOSITION
    5.
    发明公开
    THERMOPLASTIC RESIN COMPOSITION 审中-公开

    公开(公告)号：US20230383041A1

    公开(公告)日：2023-11-30

    申请号：US18034270

    申请日：2022-07-19

    Applicant: LG CHEM, LTD.

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

    IPC: C08F279/06 ,  C08L33/12

    CPC classification number: C08F279/06 ,  C08L33/12

    Abstract: The present disclosure 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 a (meth)acrylate-based monomer unit and an aromatic vinyl-based monomer unit, wherein the refractive indices of the graft polymer and the non-grafted polymer differ by 0.0100 or less.

    THERMOPLASTIC RESIN COMPOSITION
    8.
    发明申请
    THERMOPLASTIC RESIN COMPOSITION 有权

    公开(公告)号：US20210355313A1

    公开(公告)日：2021-11-18

    申请号：US17275142

    申请日：2020-06-04

    Applicant: LG CHEM, LTD.

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

    IPC: C08L51/04

    Abstract: Provided is a thermoplastic resin composition which includes: a base resin including, in a weight ratio of 70:30 to 90:10, a first copolymer formed by graft polymerization of a diene-based rubber polymer having an average particle diameter of 50 to 200 nm with a first monomer mixture including an alkyl(meth)acrylate-based monomer and an aromatic vinyl-based monomer and a second copolymer which is a copolymer of a second monomer mixture including an alkyl(meth)acrylate-based monomer and an aromatic vinyl-based monomer; and a plasticizer.

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