公开(公告)号：US12054583B2

公开(公告)日：2024-08-06

申请号：US17413285

申请日：2020-01-16

Applicant: LG Chem, Ltd.

Inventor： Hyunju Kim ,  Hyeon Hui Kim ,  Jae Hoon Choe ,  Mooho Hong ,  Ki Jae Lee ,  Soyeon Jee

IPC: C08J3/12 ,  C08G64/40 ,  C08J3/09

CPC classification number: C08G64/406 ,  C08J3/095 ,  C08J3/096 ,  C08J3/12 ,  C08J2369/00

Abstract: A method for preparing granular polycarbonate particles is disclosed herein. In some embodiments, a method for preparing granulated polycarbonate particles includes mixing a polymerization reaction solution comprising polycarbonate and an organic solvent, and an anti-solvent solution comprising water and an anti-solvent to prepare a mixed solution, heating the mixed solution to remove the organic solvent, and drying or filtering the mixed solution to obtain granular polycarbonate particles. The granular polycarbonate particles having excellent physical properties without using a stabilizer or a surfactant can be obtain.

公开(公告)号：US11884777B2

公开(公告)日：2024-01-30

申请号：US17268271

申请日：2019-09-11

Applicant: LG CHEM, LTD.

Inventor： Young Young Hwang ,  Mooho Hong ,  Ki Jae Lee

IPC: C08G64/06 ,  C08G65/48 ,  C07C43/295 ,  C07D493/04 ,  C08G64/18 ,  C08G64/28 ,  C08G65/46

CPC classification number: C08G65/485 ,  C07C43/295 ,  C07D493/04 ,  C08G64/06 ,  C08G64/183 ,  C08G64/28 ,  C08G65/46 ,  C07C2601/16 ,  C07C2602/10

Abstract: Provided is a diol compound of the following Chemical Formula 1, a polycarbonate comprising the diol compound, and a method of producing the polycarbonate:

公开(公告)号：US11572439B2

公开(公告)日：2023-02-07

申请号：US17276678

申请日：2020-07-29

Applicant: LG CHEM, LTD.

Inventor： Young Young Hwang ,  Youngwook Son ,  Daehyeon Hwang ,  Mooho Hong

IPC: C08G64/18 ,  C08G77/448 ,  C08G64/08 ,  C08L69/00 ,  C08G77/445

Abstract: Provided are a copolycarbonate and a polycarbonate composition comprising the same. The copolycarbonate comprises repeat units of the following Chemical Formula 1 and repeat units of the following Chemical Formula 2:
Chemical Formula 1 Chemical Formula 2

公开(公告)号：US11859047B2

公开(公告)日：2024-01-02

申请号：US17266835

申请日：2019-11-06

Applicant: LG CHEM, LTD.

Inventor： Hyong Min Bahn ,  Un Ko ,  Jungmoon Bae ,  Daehyeon Hwang ,  Mooho Hong ,  Sugil Yum

IPC: C08L69/00 ,  C08L83/04 ,  C08K5/42 ,  C08G64/06 ,  B29C45/00 ,  C08K5/00 ,  C08K5/1515 ,  B29K69/00 ,  C08G77/00

CPC classification number: C08G64/06 ,  B29C45/0001 ,  C08K5/005 ,  C08K5/1515 ,  C08K5/42 ,  C08L69/00 ,  C08L83/04 ,  B29K2069/00 ,  C08G77/80 ,  C08L2201/02 ,  C08L2201/08 ,  C08L2201/10 ,  C08L2203/30 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2205/035 ,  C08L69/00 ,  C08L69/00 ,  C08L83/04 ,  C08L83/06 ,  C08K5/42 ,  C08K5/1515

Abstract: Provided is a polycarbonate resin composition and a molded product comprising same. The polycarbonate resin composition comprises a linear polycarbonate resin, a branched polycarbonate resin, a fluorinated sulfonate-based metal salt, a phenyl methyl silicone oil, and a phenyl methyl silicone resin. The linear polycarbonate resin and branched polycarbonate resin include a repeating unit of the following Chemical Formula 1:






wherein in Chemical Formula 1:
R1 to R4 are each independently hydrogen, C1-10 alkyl, C1-10 alkoxy, or halogen; and
Z is C1-10 alkylene unsubstituted or substituted with phenyl, C3-15 cycloalkylene unsubstituted or substituted with C1-10 alkyl, O, S, SO, SO2, or CO.

公开(公告)号：US11499010B2

公开(公告)日：2022-11-15

申请号：US15734954

申请日：2019-08-09

Applicant: LG CHEM, LTD.

Inventor： Youngwook Son ,  Young In Yang ,  Ki Jae Lee ,  Mooho Hong ,  Byoungkue Jeon ,  Young Young Hwang

IPC: C08G64/08 ,  C08G64/30

Abstract: Provided is a polycarbonate of Chemical Formula 1: wherein in Chemical Formula 1: Ar is C6-60 arylene unsubstituted or substituted with C1-10 alkyl; and n and m are each independently an integer from 1 to 50, provided that n+m is 2 or more, and a preparation method thereof.

公开(公告)号：US12122909B2

公开(公告)日：2024-10-22

申请号：US17261471

申请日：2019-08-09

Applicant: LG CHEM, LTD.

Inventor： Ki Jae Lee ,  Young In Yang ,  Youngwook Son ,  Mooho Hong ,  Byoungkue Jeon ,  Young Young Hwang

IPC: C08L69/00 ,  C08G64/08 ,  C08G64/24

CPC classification number: C08L69/00 ,  C08G64/081 ,  C08G64/24 ,  C08L2201/08

Abstract: The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.

公开(公告)号：US11773259B2

公开(公告)日：2023-10-03

申请号：US17432196

申请日：2020-11-25

Applicant: LG CHEM, LTD.

Inventor： Young In Yang ,  Byoungkue Jeon ,  Mooho Hong ,  Seongmi Cho ,  Hoyong Lee ,  Jihye Jung

IPC: C08L69/00 ,  C08K5/315 ,  G02B1/04

CPC classification number: C08L69/00 ,  C08K5/315 ,  G02B1/041 ,  C08L2201/10 ,  G02B1/041 ,  C08L69/00 ,  C08L69/00 ,  C08K5/315 ,  C08L69/00 ,  C08K5/005 ,  C08K5/315

Abstract: Provided is a polycarbonate composition comprising a polycarbonate and a light blocking agent, and an optical product formed therefrom. The polycarbonate composition has a low yellow index, unlike conventional yellowish blue light-blocking products, and thus various colors can be implemented. Accordingly, it is possible to provide optical products with various colors, and the polycarbonate composition is very suitable for spectacles required to have high transparency and to block blue light that is harmful to eyes.

公开(公告)号：US11702506B2

公开(公告)日：2023-07-18

申请号：US17260162

申请日：2019-08-09

Applicant: LG CHEM, LTD.

Inventor： Ki Jae Lee ,  Young In Yang ,  Youngwook Son ,  Mooho Hong ,  Byoungkue Jeon ,  Young Young Hwang

IPC: C08G64/28 ,  C08G64/30 ,  C08G64/08

CPC classification number: C08G64/305 ,  C08G64/081 ,  C08G64/28

Abstract: The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.

公开(公告)号：US11591475B2

公开(公告)日：2023-02-28

申请号：US16756090

申请日：2019-04-18

Applicant: LG CHEM, LTD.

Inventor： Byoungkue Jeon ,  Youngwook Son ,  Daehyeon Hwang ,  Mooho Hong

IPC: C08K5/00 ,  G02B1/04 ,  C09B1/503 ,  C08G64/06 ,  C08K5/103 ,  C08K5/18

Abstract: Provided are a polycarbonate resin composition comprising a polycarbonate resin, pentaerythritol tetrastearate, a black dye, and a blue dye, and an optical molded product comprising same.

公开(公告)号：US20220025113A1

公开(公告)日：2022-01-27

申请号：US17413285

申请日：2020-01-16

Applicant: LG Chem, Ltd.

Inventor： Hyunju Kim ,  Hyeon Hui Kim ,  Jae Hoon Choe ,  Mooho Hong ,  Ki Jae Lee ,  Soyeon Jee

IPC: C08G64/40 ,  C08J3/09 ,  C08J3/12

Abstract: A method for preparing granular polycarbonate particles is disclosed herein. In some embodiments, a method for preparing granulated polycarbonate particles includes mixing a polymerization reaction solution comprising polycarbonate and an organic solvent, and an anti-solvent solution comprising water and an anti-solvent to prepare a mixed solution, heating the mixed solution to remove the organic solvent, and drying or filtering the mixed solution to obtain granular polycarbonate particles. The granular polycarbonate particles having excellent physical properties without using a stabilizer or a surfactant can be obtain.