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).
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Thermoplastic resin composition, method of preparing the same, and molded article including the same
Patent number: 12240971Abstract: 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: GrantFiled: August 17, 2021Date of Patent: March 4, 2025Assignee: LG CHEM, LTD.Inventors: Seongkyun Kim, Seo Hwa Kim, Byoung Il Kang, Sejin Han, Yeongmin Kim -
Patent number: 12146048Abstract: 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: GrantFiled: October 6, 2020Date of Patent: November 19, 2024Assignee: LG CHEM, LTD.Inventors: Dong Kun Shin, Seo Hwa Kim, Byoung Il Kang
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Patent number: 12006429Abstract: 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: GrantFiled: September 11, 2019Date of Patent: June 11, 2024Assignee: LG CHEM, LTD.Inventors: Seo Hwa Kim, Byoung Il Kang, Eun Jung Choi, Taek Jun Jung, Jeong In Cho, Dong Kun Shin
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Publication number: 20240018347Abstract: 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: ApplicationFiled: April 27, 2022Publication date: January 18, 2024Applicant: LG CHEM, LTD.Inventors: Seong Kyun KIM, Seo Hwa KIM, Byoung Il KANG, Se Jin HAN, Yeong Min KIM
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Patent number: 11702536Abstract: 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: GrantFiled: September 6, 2019Date of Patent: July 18, 2023Assignee: LG CHEM, LTD.Inventors: Ju Hyeong Lee, Byoung Il Kang, Seo Hwa Kim, Sejin Han, Seongkyun Kim
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THERMOPLASTIC RESIN COMPOSITION, METHOD OF PREPARING THE SAME, AND MOLDED ARTICLE INCLUDING THE SAME
Publication number: 20230174768Abstract: 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: ApplicationFiled: October 26, 2021Publication date: June 8, 2023Applicant: LG CHEM, LTD.Inventors: Seo Hwa KIM, Byoung Il KANG, Dong Kun SHIN, Eun Jung CHOI, Yeongmin KIM -
THERMOPLASTIC RESIN COMPOSITION, METHOD OF PREPARING THE SAME, AND MOLDED ARTICLE INCLUDING THE SAME
Publication number: 20230151200Abstract: 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: ApplicationFiled: August 17, 2021Publication date: May 18, 2023Applicant: LG CHEM, LTD.Inventors: Seongkyun KIM, Seo Hwa KIM, Byoung Il KANG, Sejin HAN, Yeongmin KIM -
THERMOPLASTIC RESIN COMPOSITION, METHOD OF PREPARING THE SAME, AND MOLDED ARTICLE INCLUDING THE SAME
Publication number: 20220403148Abstract: 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: ApplicationFiled: October 7, 2021Publication date: December 22, 2022Applicant: LG CHEM, LTD.Inventors: Yeongmin KIM, Seo Hwa KIM, Eun Jung CHOI, Byoung Il KANG -
Publication number: 20220380594Abstract: 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: ApplicationFiled: June 21, 2021Publication date: December 1, 2022Applicant: LG CHEM, LTD.Inventors: Eun Jung CHOI, Seo Hwa KIM, Byoung Il KANG, Seongkyun KIM, Yeongmin KIM
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Patent number: 11505689Abstract: 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: GrantFiled: March 19, 2019Date of Patent: November 22, 2022Assignee: LG CHEM, LTD.Inventors: Byoung Il Kang, Eun Jung Choi, Da Eun Sung
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Publication number: 20220213310Abstract: 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: ApplicationFiled: October 6, 2020Publication date: July 7, 2022Applicant: LG CHEM, LTD.Inventors: Dong Kun SHIN, Seo Hwa KIM, Byoung Il KANG
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Publication number: 20220213307Abstract: 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: ApplicationFiled: October 6, 2020Publication date: July 7, 2022Applicant: LG CHEM, LTD.Inventors: Seong Kyun KIM, Seo Hwa KIM, Eun Jung CHOI, Byoung Il KANG, Dong Kun SHIN, Yeong Min KIM
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Patent number: 11236224Abstract: 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: GrantFiled: November 13, 2017Date of Patent: February 1, 2022Assignee: LG CHEM, LTD.Inventors: Ju Hyeong Lee, Byoung Il Kang, Se Jin Han
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Patent number: 11104785Abstract: 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: GrantFiled: March 19, 2019Date of Patent: August 31, 2021Assignee: LG Chem, Ltd.Inventors: Byoung Il Kang, Eun Jung Choi
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Publication number: 20210238407Abstract: 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: ApplicationFiled: September 11, 2019Publication date: August 5, 2021Inventors: Seo Hwa KIM, Byoung Il KANG, Eun Jung CHOI, Taek Jun JUNG, Jeong In CHO, Dong Kun SHIN
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Publication number: 20210179839Abstract: 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: ApplicationFiled: November 13, 2017Publication date: June 17, 2021Inventors: Ju Hyeong LEE, Byoung Il KANG, Se Jin HAN
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Publication number: 20200325325Abstract: 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: ApplicationFiled: September 6, 2019Publication date: October 15, 2020Inventors: Ju Hyeong LEE, Byoung Il KANG, Seo Hwa KIM, Sejin HAN, Seongkyun KIM
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Publication number: 20200291213Abstract: 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: ApplicationFiled: March 19, 2019Publication date: September 17, 2020Inventors: Byoung Il KANG, Eun Jung CHOI, Da Eun SUNG
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Patent number: 10767039Abstract: 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: GrantFiled: February 26, 2019Date of Patent: September 8, 2020Assignee: LG CHEM, LTD.Inventors: Dong Kun Shin, Seo Hwa Kim, Byoung Il Kang, Chang Hun Han
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Patent number: 10717859Abstract: 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: GrantFiled: November 16, 2017Date of Patent: July 21, 2020Assignee: 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