公开(公告)号：US20230399503A1

公开(公告)日：2023-12-14

申请号：US18034253

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: C08L51/04 ,  C08L9/06 ,  C08F212/08 ,  C08F220/14 ,  C08F220/44

CPC classification number: C08L51/04 ,  C08L9/06 ,  C08F212/08 ,  C08F220/14 ,  C08F220/44 ,  C08L2207/53

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 90 wt % or more of a (meth)acrylate-based monomer unit.

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.

公开(公告)号：US20200270442A1

公开(公告)日：2020-08-27

申请号：US16646127

申请日：2019-05-14

Applicant: LG CHEM, LTD.

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

IPC: C08L33/12 ,  C08F220/14 ,  C08F279/02 ,  C08L47/00

Abstract: The present invention relates to a matrix copolymer including a cellulose nanocrystal derivative, an alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; a graft copolymer including a cellulose nanocrystal derivative, a conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; and a thermoplastic resin composition including at least one thereof. In accordance with the present invention, provided is a thermoplastic resin composition having improved processability, impact strength, tensile strength and chemical resistance while maintaining transparency.

公开(公告)号：US20190127569A1

公开(公告)日：2019-05-02

申请号：US15846036

申请日：2017-12-18

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION ,  LG CHEM, LTD.

Inventor： Min Ho CHOI ,  Won Seok LEE ,  Seok Goo JANG ,  Jeong Su CHOI

IPC: C08L33/20

Abstract: The present disclosure relates to a thermoplastic transparent resin composition for a wheel rust cover. The thermoplastic transparent resin composition is excellent in transparency and impact strength and suitable for a vacuum compression thermal molding process. A thermoplastic transparent resin composition for a wheel rust cover includes 20 wt % to 60 wt % of a graft copolymer, 40 wt % to 70 wt % of a non-graft copolymer, and 3 wt % to 10 wt % of a processing aid, in which a total rubber content is 10 wt % to 25 wt %, a total methacrylic acid alkyl ester compound content is 34 wt % to 67 wt %, a total aromatic vinyl compound content is 16 wt % to 40 wt %, and a total vinyl cyan compound content is 0 wt % to 10 wt %.

公开(公告)号：US20190062484A1

公开(公告)日：2019-02-28

申请号：US16083857

申请日：2018-01-02

Applicant: LG CHEM, LTD.

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

IPC: C08F279/02 ,  C08F220/14 ,  C08F222/34 ,  C08F212/04 ,  C08F2/24 ,  C08L55/02

Abstract: 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. 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.

公开(公告)号：US20180371230A1

公开(公告)日：2018-12-27

申请号：US15779815

申请日：2017-08-30

Applicant: LG CHEM, LTD.

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

IPC: C08L51/04 ,  C08F279/02 ,  C08F220/14 ,  C08L33/12

Abstract: The present disclosure relates to a transparent thermoplastic resin and a method of preparing the same. More particularly, the present disclosure provides a transparent thermoplastic resin that provides superior transparency without generation of flow marks on a surface, and does not exhibit cracks or a whitening phenomenon during processing due to superior whitening resistance, particularly superior whitening resistance at low temperature, a method of preparing the transparent thermoplastic resin, and the like.

公开(公告)号：US20180002521A1

公开(公告)日：2018-01-04

申请号：US15545247

申请日：2016-12-01

Applicant: LG CHEM, LTD.

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

IPC: C08L33/12 ,  A01N59/16

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

Abstract: 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.

公开(公告)号：US20170260384A1

公开(公告)日：2017-09-14

申请号：US14903485

申请日：2015-10-15

Applicant: LG CHEM, LTD.

Inventor： Jeong Su CHOI ,  Min Cheol JU ,  Min Seung SHIN ,  Sung Won HONG ,  In Soo KIM ,  Ho Hoon KIM ,  Sang Hoo PARK ,  Keun Hoon YOO ,  Roo Da LEE ,  Won Seok LEE ,  Hyung Sub LEE ,  Seok Goo JANG

IPC: C08L33/12 ,  C08L25/14

CPC classification number: C08L33/12 ,  C08F6/22 ,  C08F279/02 ,  C08F279/06 ,  C08L25/14 ,  C08L33/04 ,  C08L51/04 ,  C08F220/14 ,  C08F212/08 ,  C08F220/44

Abstract: Disclosed are a thermoplastic resin composition and a method of preparing the same. More particularly, the present invention relates to a thermoplastic resin composition including 10 to 90% by weight of a graft copolymer resin coagulated by an organic acid or an organic acid salt; and 90 to 10% by weight of a non-graft copolymer resin and having a moist-heat characteristic of 20 or less, wherein a refractive index difference between the graft copolymer resin and the non-graft copolymer resin is less than 0.01, a method of preparing the same, and a molded product comprising the same. According to the present disclosure, provided are a thermoplastic resin composition having superior overall property balance, color, and transparency, and being applicable to products that are exposed to high-temperature water or should be sterilized, due to excellent moist-heat resistance thereof, a method of preparing the same, and a molded product comprising the same.

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.

公开(公告)号：US20180230301A1

公开(公告)日：2018-08-16

申请号：US15510646

申请日：2016-07-29

Applicant: LG CHEM, LTD.

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

IPC: C08L33/20

CPC classification number: C08L33/20 ,  C08J5/00 ,  C08L25/12 ,  C08L51/04 ,  C08L2201/08 ,  C08L2201/10 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/06

Abstract: The present disclosure relates to a thermoplastic resin composition and a method of preparing the same. In accordance with the present disclosure, a thermoplastic resin composition having superior property balance, such as processability, chemical resistance, heat stability, and impact resistance, and excellent transparency, and a method of preparing the same are provided.