Patents by Inventor Byoung-il Kang

Byoung-il Kang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240018347
    Abstract: The present disclosure relates to a thermoplastic resin composition including: a diene-based graft polymer; an acrylic graft polymer; a vinyl-based polymer including a vinyl aromatic monomer unit and a vinyl cyanide-based monomer unit; a polyamide elastomer; an olefin-based polymer including a vinyl acetate monomer unit; an inorganic antibacterial agent including a metal ion supported on a glass carrier; and a zinc oxide having a BET specific surface area of 11 to 28 m2/g.
    Type: Application
    Filed: April 27, 2022
    Publication date: January 18, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Seong Kyun KIM, Seo Hwa KIM, Byoung Il KANG, Se Jin HAN, Yeong Min KIM
  • Patent number: 11702536
    Abstract: A thermoplastic resin composition includes 100 parts by weight of a base resin including 5 to 40% by weight of a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer (a) containing conjugated diene rubber having a particle diameter of 0.05 ?m to 0.2 ?m, 5 to 40% by weight of a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer (b) containing conjugated diene rubber having a particle diameter of greater than 0.2 ?m and less than or equal to 0.5 ?m, and 50 to 80% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (c); and more than 0.01 parts by weight and less than 2 parts by weight of a compound having a kinematic viscosity (25° C.) greater than 5 cSt and less than 200 cSt. The resin composition has excellent plating characteristics.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: July 18, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Ju Hyeong Lee, Byoung Il Kang, Seo Hwa Kim, Sejin Han, Seongkyun Kim
  • Publication number: 20230174768
    Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. Also disclosed is a thermoplastic resin composition including a base resin including a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, an alkyl acrylate rubber-vinyl cyanide compound-aromatic vinyl compound graft copolymer, and an aromatic vinyl compound-vinyl cyanide compound copolymer and a polysiloxane in a predetermined composition ratio, wherein the alkyl acrylate rubber-vinyl cyanide compound-aromatic vinyl compound graft copolymer has a grafting degree of 42% or more and is included in an amount of 0.1 to 10% by weight based on 100% by weight in total of the base resin.
    Type: Application
    Filed: October 26, 2021
    Publication date: June 8, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seo Hwa KIM, Byoung Il KANG, Dong Kun SHIN, Eun Jung CHOI, Yeongmin KIM
  • Publication number: 20230151200
    Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article including the same, including a thermoplastic resin composition including 100 parts by weight of a base resin (A) including a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound graft copolymer (A-1) and an aromatic vinyl compound-vinyl cyanide compound copolymer (A-2); 0.1 to 32 parts by weight of a polymer (B) having a weight average molecular weight of greater than 500,000 g/mol and containing an unshared electron pair; 0.1 to 5 parts by weight of an inorganic antibacterial agent (C) including one or more carriers selected from the group consisting of phosphate glass, silica gel, calcium phosphate, and zirconium sodium phosphate; and 0.2 to 10 parts by weight of zinc oxide (D) having a BET surface area of 28 m2/g or more, a method of preparing the thermoplastic resin composition, and a molded article including the thermoplastic resin composition.
    Type: Application
    Filed: August 17, 2021
    Publication date: May 18, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seongkyun KIM, Seo Hwa KIM, Byoung Il KANG, Sejin HAN, Yeongmin KIM
  • Publication number: 20220403148
    Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article including the same, including a thermoplastic resin composition including 100 parts by weight of a base resin including 20 to 90% by weight of a non-recycled thermoplastic resin (A) and 10 to 80% by weight of a recycled thermoplastic resin (B); 1 to 10 parts by weight of an ethylene compound-vinyl acetate compound copolymer (C); and 0.01 to 10 parts by weight of an inorganic pigment (D), wherein the inorganic pigment (D) has a refractive index of 1.65 or more and an average particle diameter of 10 to 500 nm.
    Type: Application
    Filed: October 7, 2021
    Publication date: December 22, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Yeongmin KIM, Seo Hwa KIM, Eun Jung CHOI, Byoung Il KANG
  • Publication number: 20220380594
    Abstract: Disclosed is a thermoplastic resin composition having excellent compatibility between a base resin and additives that may prevent aggregation of a metal pigment, and a molded article including the same. Also disclosed is a molded article manufactured using the thermoplastic resin composition, which may reduce flow marks on a metallic surface, and thus appearance and gloss may be excellent, injection quality and antistatic properties may be excellent, and the molded article may be widely used in various fields such as electronics.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 1, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Eun Jung CHOI, Seo Hwa KIM, Byoung Il KANG, Seongkyun KIM, Yeongmin KIM
  • Patent number: 11505689
    Abstract: Provided is a thermoplastic resin composition that includes: a first copolymer including an unit derived from an aromatic vinyl-based monomer and an unit derived from a vinyl cyan-based monomer; a second copolymer including an unit derived from an alkyl (meth)acrylate-based monomer, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer; a third copolymer including a conjugated diene-based polymer with an average particle diameter of 0.25 to 0.35 ?m, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer; and a fourth copolymer including a conjugated diene-based polymer with an average particle diameter of 0.05 to 0.15 ?m, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer, and can be used for producing a molded article exhibiting excellent basic properties while being capable of realizing selective transmittance.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: November 22, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Byoung Il Kang, Eun Jung Choi, Da Eun Sung
  • Publication number: 20220213307
    Abstract: Disclosed is a thermoplastic resin composition including a base resin having a diene-based rubber graft copolymer and a vinyl cyanide-aromatic vinyl-based copolymer, an olefin-based copolymer having a crystalline unit, and a metallic pigment.
    Type: Application
    Filed: October 6, 2020
    Publication date: July 7, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Seong Kyun KIM, Seo Hwa KIM, Eun Jung CHOI, Byoung Il KANG, Dong Kun SHIN, Yeong Min KIM
  • Publication number: 20220213310
    Abstract: Disclosed is a base resin including at least one rubber graft copolymer selected from a diene-based rubber graft copolymer and an acrylic rubber graft copolymer and a vinyl cyanide-aromatic vinyl-based copolymer, a first silicone oil having a viscosity of 100 cPs to 1,000 cPs as measured according to ASTM D445, and a second silicone oil having a viscosity of 5,000 cPs to 20,000 cPs as measured according to ASTM D445.
    Type: Application
    Filed: October 6, 2020
    Publication date: July 7, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Dong Kun SHIN, Seo Hwa KIM, Byoung Il KANG
  • Patent number: 11236224
    Abstract: Disclosed are a thermoplastic resin composition, a method of preparing the same, and a molded part manufactured using the same, wherein the thermoplastic resin composition includes a-1) 1 to 30% by weight of a first graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.05 ?m or more and less than 0.2 ?m; a-2) 5 to 45% by weight of a second graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.2 to 0.5 ?m; b) 50 to 80% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer; and c) 1 to 10% by weight of a (meth)acrylic acid alkyl ester polymer.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: February 1, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Ju Hyeong Lee, Byoung Il Kang, Se Jin Han
  • Patent number: 11104785
    Abstract: Provided is a thermoplastic resin composition that includes: a first copolymer including an unit derived from an aromatic vinyl-based monomer and an unit derived from a vinyl cyan-based monomer; a second copolymer having a refractive index of 1.51 to 1.53 and including an unit derived from an alkyl (meth)acrylate-based monomer, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer; and a third copolymer including a conjugated diene-based polymer with an average particle diameter of 0.05 to 0.15 ?m, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer, and can be used for producing a molded article capable of realizing selective transmittance.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: August 31, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Byoung Il Kang, Eun Jung Choi
  • Publication number: 20210238407
    Abstract: The present invention provides a thermoplastic resin composition which includes: a first copolymer including a core including a conjugated diene-based polymer and a shell including an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit; and a second copolymer including an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit, wherein the first copolymer has a degree of grafting of 32 to 50%, the second copolymer has a weight-average molecular weight of 85,000 to 115,000 g/mol, and the thermoplastic resin composition includes the first copolymer at 30 wt % or less and an oligomer residue at 1.1 wt % or less. Specifically, the thermoplastic resin composition can shorten an injection molding time.
    Type: Application
    Filed: September 11, 2019
    Publication date: August 5, 2021
    Inventors: Seo Hwa KIM, Byoung Il KANG, Eun Jung CHOI, Taek Jun JUNG, Jeong In CHO, Dong Kun SHIN
  • Publication number: 20210179839
    Abstract: Disclosed are a thermoplastic resin composition, a method of preparing the same, and a molded part manufactured using the same, wherein the thermoplastic resin composition includes a-1) 1 to 30% by weight of a first graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.05 ?m or more and less than 0.2 ?m; a-2) 5 to 45% by weight of a second graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.2 to 0.5 ?m; b) 50 to 80% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer; and c) 1 to 10% by weight of a (meth)acrylic acid alkyl ester polymer.
    Type: Application
    Filed: November 13, 2017
    Publication date: June 17, 2021
    Inventors: Ju Hyeong LEE, Byoung Il KANG, Se Jin HAN
  • Publication number: 20200325325
    Abstract: A thermoplastic resin composition includes 100 parts by weight of a base resin including 5 to 40% by weight of a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer (a) containing conjugated diene rubber having a particle diameter of 0.05 ?m to 0.2 ?m, 5 to 40% by weight of a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer (b) containing conjugated diene rubber having a particle diameter of greater than 0.2 ?m and less than or equal to 0.5 ?m, and 50 to 80% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (c); and more than 0.01 parts by weight and less than 2 parts by weight of a compound having a kinematic viscosity (25° C.) greater than 5 cSt and less than 200 cSt. The resin composition has excellent plating characteristics.
    Type: Application
    Filed: September 6, 2019
    Publication date: October 15, 2020
    Inventors: Ju Hyeong LEE, Byoung Il KANG, Seo Hwa KIM, Sejin HAN, Seongkyun KIM
  • Publication number: 20200291213
    Abstract: Provided is a thermoplastic resin composition that includes: a first copolymer including an unit derived from an aromatic vinyl-based monomer and an unit derived from a vinyl cyan-based monomer; a second copolymer including an unit derived from an alkyl (meth)acrylate-based monomer, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer; a third copolymer including a conjugated diene-based polymer with an average particle diameter of 0.25 to 0.35 ?m, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer; and a fourth copolymer including a conjugated diene-based polymer with an average particle diameter of 0.05 to 0.15 ?m, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer, and can be used for producing a molded article exhibiting excellent basic properties while being capable of realizing selective transmittance.
    Type: Application
    Filed: March 19, 2019
    Publication date: September 17, 2020
    Inventors: Byoung Il KANG, Eun Jung CHOI, Da Eun SUNG
  • Patent number: 10767039
    Abstract: The present invention provides a thermoplastic resin and a molded article using the same, wherein the thermoplastic resin comprises: (A) 10 parts by weight to less than 30 parts by weight of a butadiene-based graft copolymer; (B) 5 parts by weight or more to less than 30 parts by weight of an acrylate-based graft copolymer; (C) 35 parts by weight to 65 parts by weight of a vinyl cyanide-aromatic vinyl-based copolymer; (D) 1 part by weight to 10 parts by weight of an ethylene-alkyl acrylate-based copolymer elastomer based on the total 100 parts by weight of (A), (B), and (C); and (E) 1 part by weight to 10 parts by weight of a polyester-based elastomer.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: September 8, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Dong Kun Shin, Seo Hwa Kim, Byoung Il Kang, Chang Hun Han
  • Patent number: 10717859
    Abstract: The present invention relates to a composition for preparing a SAN copolymer, a SAN copolymer, a preparation method therefor, a heat-resistant ABS resin blend comprising the same, and heat-resistant ABS pellets. Specifically, the present invention provides a composition for preparing a SAN copolymer, the composition comprising a monomer mixture, and ethylene glycol dimethacrylate as a chain extender, wherein the monomer mixture comprises 60 to 75 wt % of an ?-methylstyrene monomer and 25 to 40 wt % of an acrylonitrile-based monomer based on the total weight of the monomer mixture; and the ethylene glycol dimethacrylate is contained in an amount of 0.001 to 0.15 parts by weight based on 100 parts by weight of the monomer mixture.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 21, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Gyu Sun Kim, Chang Hun Han, Dae Woo Lee, Jae Bum Seo, Jung Tae Park, Eun Jung Choi, Byoung Il Kang, Da Eun Sung
  • Publication number: 20200216653
    Abstract: Provided is a thermoplastic resin composition that includes: a first copolymer including an unit derived from an aromatic vinyl-based monomer and an unit derived from a vinyl cyan-based monomer; a second copolymer having a refractive index of 1.51 to 1.53 and including an unit derived from an alkyl (meth)acrylate-based monomer, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer; and a third copolymer including a conjugated diene-based polymer with an average particle diameter of 0.05 to 0.15 ?m, an unit derived from an aromatic vinyl-based monomer, and an unit derived from a vinyl cyan-based monomer, and can be used for producing a molded article capable of realizing selective transmittance.
    Type: Application
    Filed: March 19, 2019
    Publication date: July 9, 2020
    Inventors: Byoung Il KANG, Eun Jung CHOI
  • Publication number: 20190194445
    Abstract: The present invention provides a thermoplastic resin and a molded article using the same, wherein the thermoplastic resin comprises: (A) 10 parts by weight to less than 30 parts by weight of a butadiene-based graft copolymer; (B) 5 parts by weight or more to less than 30 parts by weight of an acrylate-based graft copolymer; (C) 35 parts by weight to 65 parts by weight of a vinyl cyanide-aromatic vinyl-based copolymer; (D) 1 part by weight to 10 parts by weight of an ethylene-alkyl acrylate-based copolymer elastomer based on the total 100 parts by weight of (A), (B), and (C); and (E) 1 part by weight to 10 parts by weight of a polyester-based elastomer.
    Type: Application
    Filed: February 26, 2019
    Publication date: June 27, 2019
    Inventors: Dong Kun SHIN, Seo Hwa KIM, Byoung Il KANG, Chang Hun HAN
  • Patent number: 10174193
    Abstract: The present invention relates to method for preparing a modified acrylonitrile-butadiene-styrene resin having excellent matteness, impact resistance, and heat resistance, as well as having a low total volatile organic compounds content, and to a modified acrylonitrile-butadiene-styrene resin prepared thereby.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: January 8, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jae Bum Seo, Chang Hun Han, Dae Woo Lee, Jung Tae Park, Eun Jung Choi, Byoung Il Kang, Da Eun Sung, Gyu Sun Kim