Patents by Inventor Seong-lyong Kim
Seong-lyong Kim 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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Patent number: 12195616Abstract: The present invention relates to a thermoplastic resin composition comprising: 100 parts by weight of a base resin comprising a first polymer obtained by graft polymerization of an aromatic vinyl-based monomer and a vinyl cyanide-based monomer to a diene-based rubber polymer, a second polymer comprising maleimide-based monomer units, maleic acid-based monomer units, and aromatic vinyl-based monomer units, and a third polymer comprising aromatic vinyl-based monomer units and vinyl cyanide-based monomer units; and 1 part by weight to 3 parts by weight of a fourth polymer comprising polyvinyl alcohol.Type: GrantFiled: September 7, 2020Date of Patent: January 14, 2025Assignee: LG CHEM, LTD.Inventors: Jin Oh Nam, Seung Hun Han, Seong Lyong Kim
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Patent number: 12180357Abstract: Disclosed is an ABS-based resin composition, a method of preparing the same, and a molded article including the same, including an ABS-based resin composition including 100 parts by weight of a base resin including 20 to 40% by weight of a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound graft copolymer and 60 to 80% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer; and 0.1 to 5 parts by weight of a polyether-modified polysiloxane, a method of preparing the ABS-based resin composition, and a molded article including the ABS-based resin composition.Type: GrantFiled: June 9, 2021Date of Patent: December 31, 2024Assignee: LG Chem, Ltd.Inventors: Jinoh Nam, Seunghun Han, Seong Lyong Kim
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Patent number: 12006428Abstract: The present invention provides a thermoplastic resin composition which comprises: a first polymer formed by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; a second polymer comprising an aromatic vinyl-based monomer unit and a vinyl cyanide-based monomer unit; a third polymer formed by graft polymerization of an olefin-based polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; and a fourth polymer comprising an olefin-based monomer unit and having a density of 0.92 to 0.94 g/cm3 as measured in accordance with ASTM D1505, a softening point of 100 to 120° C. as measured in accordance with ASTM D1525, and a melt flow index of 5 to 7 g/10 min as measured in accordance with ASTM D1238 at 190° C. and 2.16 kg, wherein the thermoplastic resin composition comprises the fourth polymer at 1 to 10 wt %.Type: GrantFiled: October 6, 2020Date of Patent: June 11, 2024Assignee: LG CHEM, LTD.Inventors: Jun Ho Choe, Seung Cheol Ryoo, Seong Lyong Kim, Dae San Jung
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Publication number: 20240132713Abstract: The present invention relates to a thermoplastic resin composition including a diene-based graft polymer; a first polymer including a vinyl cyanide-based monomer and an alkyl-substituted styrene-based monomer; a second polymer including a vinyl cyanide-based monomer, an aromatic vinyl-based monomer, and a (meth)acrylate-based monomer; a third polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 80,000 to 220,000 g/mol; a fourth polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 1,500,000 to 5,000,000 g/mol; and a fifth polymer including an olefin-based monomer and having a density of 970 to 1,000 kg/m3 measured in accordance with ASTM D1505, wherein the fifth polymer is included in 0.10 to 3.Type: ApplicationFiled: September 14, 2022Publication date: April 25, 2024Applicant: LG CHEM, LTD.Inventors: Jun Ho CHOE, Ho NAMGUNG, Seong Lyong KIM, Dae San JUNG
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Publication number: 20230357559Abstract: Disclosed are a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same, including a thermoplastic resin composition, including: a base resin; based on 100% by weight of the base resin, 7 to 17 parts by weight of a polyether ester elastomer resin (D); and 1.1 to 10 parts by weight of a modified polyester resin (E), the base resin including: 10 to 40% by weight of a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound graft copolymer (A); 18 to 52% by weight of a (meth)acrylic acid alkyl ester compound-?-methyl styrene-based compound-vinyl cyanide compound copolymer (B); and 13 to 55% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (C), wherein the aromatic vinyl compound-vinyl cyanide compound copolymer (C) includes 10 to 25% by weight of a vinyl cyanide compound.Type: ApplicationFiled: August 19, 2021Publication date: November 9, 2023Applicant: LG CHEM, LTD.Inventors: Seunghun HAN, Jinoh NAM, Seong Lyong KIM
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THERMOPLASTIC RESIN COMPOSITION, METHOD OF PREPARING THE SAME, AND MOLDED ARTICLE INCLUDING THE SAME
Publication number: 20230183474Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. Also disclosed is a method of preparing a thermoplastic resin composition by adding, in a predetermined composition ratio, a polycarbonate resin and a polyester resin to a base resin including a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, an ?-methyl styrene-vinyl cyanide compound-aromatic vinyl compound copolymer, and an aromatic vinyl compound-vinyl cyanide compound copolymer. Also disclosed is a thermoplastic resin composition having excellent mechanical properties, moldability, heat resistance, and chemical resistance.Type: ApplicationFiled: August 19, 2021Publication date: June 15, 2023Applicant: LG CHEM, LTD.Inventors: Seokhee JO, Ho NAMGUNG, Junho CHOE, Seong Lyong KIM, Dae San JUNG -
Publication number: 20230174770Abstract: The present disclosure relates to a resin composition including a base resin including a first graft copolymer, a second graft copolymer and a maleimide-based copolymer; a polyolefin elastomer; a polyolefin graft copolymer; and a polyolefin wax. The present disclosure also relates to a molded product molded from the resin composition.Type: ApplicationFiled: September 28, 2021Publication date: June 8, 2023Applicant: LG CHEM, LTD.Inventors: Dae San JUNG, Jun Ho CHOE, Seong Lyong KIM, Ho NAMGUNG, Seok Hee JO
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Patent number: 11655361Abstract: Provided is a thermoplastic resin composition which includes: a first copolymer including an acrylic graft copolymer; a second copolymer including an alkyl-substituted styrene-based monomer unit, a vinyl cyanide-based monomer unit, and a (meth)acrylate-based monomer unit; and a third copolymer including an alkyl-unsubstituted styrene-based monomer unit, a vinyl cyanide-based monomer unit, and a (meth)acrylate-based monomer unit. According to the present invention, a thermoplastic resin composition and a thermoplastic resin molded article, which are excellent in heat resistance, colorability, and scratch resistance, can be provided.Type: GrantFiled: February 10, 2020Date of Patent: May 23, 2023Assignee: LG CHEM, LTD.Inventors: Joon Hwi Jo, Seong Lyong Kim, Tae Hoon Kim, Dae Woo Lee, Jae Bum Seo
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THERMOPLASTIC RESIN COMPOSITION, METHOD OF PREPARING THE SAME, AND MOLDED ARTICLE INCLUDING THE SAME
Publication number: 20230145425Abstract: 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 prepared by adding a recycled vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound copolymer and a recycled polycarbonate resin to a composition including a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, an ?-methyl styrene-vinyl cyanide compound-aromatic vinyl compound copolymer, and an aromatic vinyl compound-vinyl cyanide compound copolymer according to a predetermined composition ratio.Type: ApplicationFiled: August 19, 2021Publication date: May 11, 2023Applicant: LG CHEM, LTD.Inventors: Seokhee JO, Ho NAMGUNG, Junho CHOE, Seong Lyong KIM, Dae San JUNG -
Thermoplastic resin composition, method of preparing the same, and molded article including the same
Patent number: 11634575Abstract: The present invention relates to a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. More specifically, the present invention relates to a thermoplastic resin composition including 100 parts by weight of a base resin including a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound graft copolymer and an ?-methyl styrene compound-vinyl cyanide compound copolymer and 0.4 to 3 parts by weight of an alkoxylated polyethyleneimine, a method of preparing the thermoplastic resin composition, and a molded article including the thermoplastic resin composition. The thermoplastic resin composition according to the present invention has improved chemical resistance to solvents such as thinner without degradation in fluidity and mechanical properties, and thus has excellent paintability.Type: GrantFiled: November 7, 2019Date of Patent: April 25, 2023Assignee: LG CHEM, LTD.Inventors: Seunghun Han, Suk Jo Choi, Jinoh Nam, Seong Lyong Kim -
Patent number: 11608401Abstract: Provided is a thermoplastic resin composition which includes: a first graft copolymer including a C4 to C10 alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; a second graft copolymer including a C4 to C10 alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; and a first styrene-based copolymer being a copolymer of a monomer mixture including a C1 to C3 alkyl-substituted styrene-based monomer, a vinyl cyan-based monomer, and a C1 to C3 alkyl (meth)acrylate-based monomer, wherein the first graft copolymer and the second graft copolymer have cores having mutually different average particle diameters. The thermoplastic resin composition is excellent in colorability, weather resistance, tensile strength, flexural strength, and impact strength.Type: GrantFiled: October 29, 2019Date of Patent: March 21, 2023Assignee: LG CHEM, LTD.Inventors: Joon Hwi Jo, Seong Lyong Kim, Dae Woo Lee, Jae Bum Seo
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Patent number: 11555110Abstract: Provided is a heat-resistant resin composition which includes: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including a maleimide-based unit and an aromatic vinyl-based unit; a second styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit; and a third styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit, wherein the second styrene-based copolymer and the third styrene-based copolymer include a vinyl cyan-based unit in mutually different amounts.Type: GrantFiled: December 4, 2018Date of Patent: January 17, 2023Assignee: LG CHEM, LTD.Inventors: Do Hyeong Kim, Ho Namgung, Seong Lyong Kim, Dae San Jung
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Publication number: 20220380593Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same, including a thermoplastic resin composition including 100 parts by weight of a base resin including a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound graft copolymer (A); a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound copolymer (B); an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (C); a vinyl cyanide compound-aromatic vinyl compound copolymer (D); and a branched vinyl cyanide compound-aromatic vinyl compound copolymer (E) and a high-density polyethylene resin (F), a method of preparing the thermoplastic resin composition, and a molded article manufactured using the thermoplastic resin composition.Type: ApplicationFiled: July 6, 2021Publication date: December 1, 2022Applicant: LG CHEM, LTD.Inventors: Junho CHOE, Seong Lyong KIM, Dae San JUNG, Ho NAMGUNG, Seokhee JO
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Publication number: 20220363882Abstract: Disclosed is an ABS-based resin composition, a method of preparing the same, and a molded article including the same, including an ABS-based resin composition including 100 parts by weight of a base resin including 20 to 40% by weight of a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound graft copolymer and 60 to 80% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer; and 0.1 to 5 parts by weight of a polyether-modified polysiloxane, a method of preparing the ABS-based resin composition, and a molded article including the ABS-based resin composition.Type: ApplicationFiled: June 9, 2021Publication date: November 17, 2022Applicant: LG CHEM, LTD.Inventors: Jinoh NAM, Seunghun HAN, Seong Lyong KIM
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Patent number: 11396596Abstract: Provided is a heat-resistant resin composition which includes: a base resin including: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including an aromatic vinyl-based unit and a vinyl cyan-based unit; a second styrene-based copolymer including a maleimide-based unit, an aromatic vinyl-based unit, and a vinyl cyan-based unit; and a carbonate-based polymer; and a third styrene-based copolymer including an aromatic vinyl-based unit and a maleic acid-based unit.Type: GrantFiled: December 4, 2018Date of Patent: July 26, 2022Assignee: LG CHEM, LTD.Inventors: Do Hyeong Kim, Ho Namgung, Seong Lyong Kim, Dae San Jung
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Patent number: 11359086Abstract: Provided is a thermoplastic resin composition which comprises: a first copolymer comprising an alkyl acrylate-based rubber polymer, aromatic vinyl-based units, and vinyl cyan-based units; a second copolymer comprising an alkyl acrylate-based rubber polymer, aromatic vinyl-based units, and vinyl cyan-based units; a third copolymer comprising aromatic vinyl-based units and vinyl cyan-based units; a fourth copolymer comprising aromatic vinyl-based units and vinyl cyan-based units; and a fifth copolymer comprising maleimide-based units, aromatic vinyl-based units, and vinyl cyan-based units, wherein the first and second copolymers comprise alkyl acrylate-based rubber polymers with mutually different average particle sizes, and the third and fourth copolymers have mutually different weight average molecular weights.Type: GrantFiled: November 29, 2018Date of Patent: June 14, 2022Assignee: LG CHEM, LTD.Inventors: Tae Hoon Kim, Seong Lyong Kim, Kyung Jae Kwon, Joon Hwi Jo, Kyu Seong Jeong
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Publication number: 20220177688Abstract: The present invention provides a thermoplastic resin composition which comprises: a first polymer formed by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; a second polymer comprising an aromatic vinyl-based monomer unit and a vinyl cyanide-based monomer unit; a third polymer formed by graft polymerization of an olefin-based polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; and a fourth polymer comprising an olefin-based monomer unit and having a density of 0.92 to 0.94 g/cm3 as measured in accordance with ASTM D1505, a softening point of 100 to 120° C. as measured in accordance with ASTM D1525, and a melt flow index of 5 to 7 g/10 min as measured in accordance with ASTM D1238 at 190° C. and 2.16 kg, wherein the thermoplastic resin composition comprises the fourth polymer at 1 to 10 wt %.Type: ApplicationFiled: October 6, 2020Publication date: June 9, 2022Inventors: Jun Ho CHOE, Seung Cheol RYOO, Seong Lyong KIM, Dae San JUNG
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Publication number: 20220177687Abstract: The present invention relates to a thermoplastic resin composition comprising: 100 parts by weight of a base resin comprising a first polymer obtained by graft polymerization of an aromatic vinyl-based monomer and a vinyl cyanide-based monomer to a diene-based rubber polymer, a second polymer comprising maleimide-based monomer units, maleic acid-based monomer units, and aromatic vinyl-based monomer units, and a third polymer comprising aromatic vinyl-based monomer units and vinyl cyanide-based monomer units; and 1 part by weight to 3 parts by weight of a fourth polymer comprising polyvinyl alcohol.Type: ApplicationFiled: September 7, 2020Publication date: June 9, 2022Inventors: Jin Oh NAM, Seung Hun HAN, Seong Lyong KIM
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Publication number: 20220153979Abstract: The present invention provides a thermoplastic resin composition which comprises: a diene-based rubber graft polymer; an alkyl-unsubstituted styrene-based polymer; an alkyl-substituted styrene-based polymer comprising an alkyl-substituted styrene-based monomer unit, an alkyl-unsubstituted styrene-based monomer unit, and a vinyl cyanide-based monomer unit; and a maleimide-based polymer having a weight-average molecular weight of 110,000 to 127,000 g/mol.Type: ApplicationFiled: September 17, 2020Publication date: May 19, 2022Inventors: Ho NAMGUNG, Do Hyeong KIM, Seong Lyong KIM, Dae San JUNG
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Patent number: 11214673Abstract: The present invention relates to a heat-resistant resin composition including a first copolymer including a conjugated diene-based polymer, units derived from an aromatic vinyl-based monomer, and units derived from a vinyl cyan-based monomer; a second copolymer including units derived from an aromatic vinyl-based monomer and units derived from a vinyl cyan-based monomer and having a glass transition temperature of 115° C. or more; and a third copolymer including units derived from an aromatic vinyl-based monomer and units derived from a vinyl cyan-based monomer, wherein the second copolymer has a linear shape, and the third copolymer has a branched shape and a branched degree of 2 to 8.Type: GrantFiled: December 11, 2018Date of Patent: January 4, 2022Assignee: LG CHEM, LTD.Inventors: Seung Cheol Ryoo, Dae San Jung, Seong Lyong Kim, Jin Oh Nam