Patents by Inventor Tae Gon Kang

Tae Gon 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).

  • Patent number: 11781010
    Abstract: A thermoplastic resin composition of the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 1 part by weight to about 5 parts by weight of a silicone-based rubber modified vinyl graft copolymer; and about 0.03 parts by weight to about 0.2 parts by weight of a metallic salt compound; wherein the metallic salt compound comprises a compound represented by the Formula 1, a compound represented by the Formula 2 and/or a compound represented by the Formula 3 as defined herein. The thermoplastic resin composition can have good properties in terms of impact resistance, impact resistance after ultrasonic welding, flame retardancy, heat resistance, and the like.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: October 10, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Sang Hoon Lee, Tae Gon Kang, Eun Taek Woo, Da Heen Jeong
  • Patent number: 11708489
    Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a polycarbonate resin; approximately 0.1-5 parts by weight of a rubber-modified aromatic vinyl-based copolymer resin; approximately 0.1-7 parts by weight of zinc oxide; approximately 0.01-2 parts by weight of a C10-20 alkyl phosphate; approximately 0.01-2 parts by weight of a maleic anhydride-graft polymerized rubber polymer; and approximately 0.01-2 parts by weight of a phosphite-based antioxidant, wherein the zinc oxide has an average particle size of approximately 0.5-3 ?m, a specific surface area BET of approximately 1-10 m2/g, a 2? value as the peak position, of 35-37°, in X-ray diffraction analysis, and a crystallite size, represented by relation 1, of approximately 1,000-2,000 ?. The thermoplastic resin composition has excellent antibacterial properties, weather resistance, impact resistance, heat resistance and the like.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 25, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Hyuk Jin Jeong, Joon Hyung Yoo, Woo Jin Lee, Tae Gon Kang
  • Patent number: 11702540
    Abstract: A thermoplastic resin composition of the present invention comprises: a polycarbonate resin; a rubber-modified vinyl-based graft copolymer; a large particle size rubbery polymer having an average particle size of about 400 to about 1,500 nm; an aromatic vinyl-based copolymer resin; a phosphorus-based flame retardant; talc; wollastonite; a maleic anhydride grafted rubbery polymer; and a black pigment. The thermoplastic resin composition is superior in terms of adhesion to metal, strength, flame retardancy, fluidity, and appearance.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 18, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Dong In Ha, Seung Shik Shin, Tae Gon Kang, Seung Kap Lee
  • Patent number: 11674036
    Abstract: A thermoplastic resin composition comprises: about 100 parts by weight of a polycarbonate resin; about 50 parts by weight to about 250 parts by weight of a polyester resin; about 10 parts by weight to about 200 parts by weight of an aromatic polyphosphonate having a weight average molecular weight of about 65,000 g/mol to about 130,000 g/mol; and about 0.1 parts by weight to about 2 parts by weight of an organic acid comprising citric acid, lactic acid, malic acid, tartaric acid, and/or glycolic acid.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: June 13, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Da Heen Jeong, Tae Gon Kang, Eun Taek Woo, Sang Hoon Lee, Young Ho Park, So Hyang Shin
  • Patent number: 11518879
    Abstract: A thermoplastic resin composition comprises about 100 parts by weight of a polycarbonate resin; and about 0.5 parts by weight to about 3 parts by weight of polystyrene-poly(methyl methacrylate) copolymer particles, wherein the polystyrene-poly(methyl methacrylate) copolymer particles include about 41 wt % to about 59 wt % of polystyrene and about 41 wt % to about 59 wt % of poly(methyl methacrylate) and have an average particle diameter of about 3 ?m to about 9 ?m and a coefficient of variation (CV) of about 20% to about 40%. The thermoplastic resin composition can have good properties in terms of light transmission, light diffusion and balance therebetween.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: December 6, 2022
    Assignee: Lotte Chemical Corporation
    Inventors: Sang Hoon Lee, Tae Gon Kang, Eun Taek Woo, Da Heen Jeong
  • Publication number: 20220380597
    Abstract: A thermoplastic resin composition comprises: about 100 parts by weight of a polycarbonate resin; about 3 parts by weight to about 20 parts by weight of a rubber-modified aromatic vinyl copolymer resin; about 12 parts by weight to about 28 parts by weight of talc having an average particle size of about 8 ?m to about 20 ?m and a blackness degree L* of less than about 90; about 5 parts by weight to about 20 parts by weight of acicular inorganic fillers; and about 10 parts by weight to about 30 parts by weight of a phosphorus flame retardant. The thermoplastic resin composition can have good properties in terms of light shielding, impact resistance, dimensional stability, flame retardancy, balance therebetween, and the like.
    Type: Application
    Filed: May 26, 2022
    Publication date: December 1, 2022
    Inventors: Ki Hong CHOI, Tae Gon KANG, Dong Yeop SHIN, Ye Seul SHIN, Sung Woo YANG, Seo Yun LEE, Dong In HA
  • Publication number: 20220356345
    Abstract: A thermoplastic resin composition of the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 10 to about 40 parts by weight of a polyester resin; about 0.1 to about 1.0 parts by weight of a chain extender; about 50 to about 80 parts by weight of glass fibers; about 10 to about 25 parts by weight of a phosphorus flame retardant; and about 1 to about 7 parts by weight of a modified polyolefin, wherein the weight ratio of the polyester resin and the chain extender is about 1:0.01 to about 1:0.06. The thermoplastic resin composition is excellent in dimensional stability, flame retardancy, impact resistance, and the like.
    Type: Application
    Filed: June 5, 2020
    Publication date: November 10, 2022
    Inventors: Ki Hong CHOI, Sung Woo YANG, Dong In HA, Tae Gon KANG, Dong Yeop SHIN
  • Patent number: 11492487
    Abstract: A thermoplastic resin composition and a molded article formed of the same. The thermoplastic resin composition includes: about 100 parts by weight of a polycarbonate resin; about 5 to about 20 parts by weight of a rubber modified aromatic vinyl copolymer resin; about 0.5 to about 3 parts by weight of a maleic anhydride-grafted rubber polymer; about 50 to about 100 parts by weight of glass fibers; about 10 to about 30 parts by weight of barium sulfate; and about 5 to about 20 parts by weight of a phosphorus flame retardant. The thermoplastic resin composition can have high specific gravity and good properties in terms of impact resistance, weather resistance, flame retardancy, fluidity, and the like.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: November 8, 2022
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Ki Hong Choi, Tae Gon Kang, Sun Young Kim, Sung Woo Yang, Sang Hoon Lee, Seo Hee Chang, Dong In Ha
  • Publication number: 20220243056
    Abstract: A thermoplastic resin composition according to the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 5 to about 15 parts by weight of a first rubber-modified vinyl-based graft copolymer in which a monomer mixture is graft-polymerized to a rubber polymer, the monomer mixture containing an aromatic vinyl-based monomer and a cyanovinyl-based monomer; about 2 to about 8 parts by weight of a second rubber-modified vinyl-based graft copolymer in which an alkyl (meth)acrylate-based monomer is graft-polymerized to a rubber polymer; about 0.5 to about 2 parts by weight of a siloxane copolyester; about 17 to about 40 parts by weight of talc; and about 13 to about 23 parts by weight of a phosphorus-based flame retardant, wherein the weight ratio of the first rubber-modified vinyl-based graft copolymer to the second rubber-modified vinyl-based graft copolymer is about 1:0.15 to about 1:0.
    Type: Application
    Filed: June 5, 2020
    Publication date: August 4, 2022
    Inventors: Sang Ki PARK, Tae Gon KANG
  • Patent number: 11355683
    Abstract: A thermoplastic resin composition includes: a polyester resin; a white pigment; a core-shell structured impact modifier; and a modified polyolefin resin. Exemplary compositions include polycyclohexylenedimethylene terephthalate (PCT) resin; titanium oxide; a core-shell structured impact modifier obtained by grafting methyl (meth)acrylate to the polydimethylsiloxane rubber core; and an ethylene-methacrylate copolymer. The thermoplastic resin composition is usable for the production of molded article as a reflector or reflector cup for a LED (light-emitting diode) that maintains reflectance at elevated temperature.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: June 7, 2022
    Assignee: Lotte Chemical Corporation
    Inventors: Tae Gon Kang, Chan Moo Park, Yoo Jin Jung, Yang Il Kim, Tae Soo Kim, Sang Hyun Hong
  • Publication number: 20220127456
    Abstract: A thermoplastic resin composition includes: about 100 parts by weight of a polycarbonate resin; about 0.1 parts by weight to about 1.5 parts by weight of a first rubber-modified vinyl graft copolymer including a diene rubber polymer having an average particle diameter of about 50 nm to about 200 nm; about 0.1 parts by weight to about 1.5 parts by weight of a second rubber-modified vinyl graft copolymer including a diene rubber polymer having an average particle diameter of about 250 nm to about 400 nm; about 0.1 parts by weight to about 1.5 parts by weight of a silicone rubber-modified vinyl graft copolymer; about 3 parts by weight to about 15 parts by weight of a phosphagen compound; and about 0.05 parts by weight to about 0.3 parts by weight of an alkali (earth) metal salt of perfluoroalkylsulfonic acid.
    Type: Application
    Filed: October 26, 2021
    Publication date: April 28, 2022
    Inventors: Dong Kil CHOI, Tae Gon KANG, Young Mi KIM, Eun Taek WOO
  • Publication number: 20220064438
    Abstract: A thermoplastic resin composition of the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 1 part by weight to about 5 parts by weight of a silicone-based rubber modified vinyl graft copolymer; and about 0.03 parts by weight to about 0.2 parts by weight of a metallic salt compound; wherein the metallic salt compound comprises a compound represented by the Formula 1, a compound represented by the Formula 2 and/or a compound represented by the Formula 3 as defined herein. The thermoplastic resin composition can have good properties in terms of impact resistance, impact resistance after ultrasonic welding, flame retardancy, heat resistance, and the like.
    Type: Application
    Filed: May 11, 2021
    Publication date: March 3, 2022
    Inventors: Sang Hoon LEE, Tae Gon KANG, Eun Taek WOO, Da Heen JEONG
  • Publication number: 20210340373
    Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a polycarbonate resin; approximately 0.1-5 parts by weight of a rubber-modified aromatic vinyl-based copolymer resin; approximately 0.1-7 parts by weight of zinc oxide; approximately 0.01-2 parts by weight of a C10-20 alkyl phosphate; approximately 0.01-2 parts by weight of a maleic anhydride-graft polymerized rubber polymer; and approximately 0.01-2 parts by weight of a phosphite-based antioxidant, wherein the zinc oxide has an average particle size of approximately 0.5-3 ?m, a specific surface area BET of approximately 1-10 m2/g, a 2? value as the peak position, of 35-37°, in X-ray diffraction analysis, and a crystallite size, represented by relation 1, of approximately 1,000-2,000 ?. The thermoplastic resin composition has excellent antibacterial properties, weather resistance, impact resistance, heat resistance and the like.
    Type: Application
    Filed: December 13, 2019
    Publication date: November 4, 2021
    Inventors: Hyuk Jin JEONG, Joon Hyung YOO, Woo Jin LEE, Tae Gon KANG
  • Patent number: 11136456
    Abstract: A thermoplastic resin composition and a molded article formed of the same. The thermoplastic resin composition includes: a polycarbonate resin; an aromatic vinyl copolymer resin; mica having an average particle diameter of about 200 ?m to about 400 ?m; a modified polyolefin; and a phosphorus flame retardant, wherein the modified polyolefin includes a first modified polyolefin including a repeat unit represented by Formula 1 and a repeat unit represented by Formula 2 as defined in the specification and a second modified polyolefin including the repeat unit represented by Formula 1 and a repeat unit represented by Formula 3 as also defined in the specification. The thermoplastic resin composition can have good properties in terms of rigidity, impact resistance, heat resistance, flame resistance, and balance therebetween.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: October 5, 2021
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Su Yeon Lee, Eun Taek Woo, Tae Gon Kang, Sun Young Kim
  • Publication number: 20210171766
    Abstract: A thermoplastic resin composition of the present invention comprises: a polycarbonate resin; a rubber-modified vinyl-based graft copolymer; a large particle size rubbery polymer having an average particle size of about 400 to about 1,500 nm; an aromatic vinyl-based copolymer resin; a phosphorus-based flame retardant; talc; wollastonite; a maleic anhydride grafted rubbery polymer; and a black pigment. The thermoplastic resin composition is superior in terms of adhesion to metal, strength, flame retardancy, fluidity, and appearance.
    Type: Application
    Filed: December 28, 2018
    Publication date: June 10, 2021
    Inventors: Dong In HA, Seung Shik SHIN, Tae Gon KANG, Seung Kap LEE
  • Patent number: 10998477
    Abstract: A polyester resin composition includes: (A) polycyclohexylenedimethylene terephthalate (PCT) resin which is a polymer of terephthalic acid and cyclohexanedimethanol, wherein the cyclohexanedimethanol has a trans/cis isomer ratio of about 2.3 or more; (B) a white pigment, wherein the white pigment is titanium dioxide; and (C) inorganic fillers, wherein the inorganic fillers are glass fibers. A molded article formed from the polyester resin composition can exhibit improved mechanical properties and moldability, and thus can be suitable for light emitting diode (LED) reflectors.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: May 4, 2021
    Assignee: Lotte Chemical Corporation
    Inventors: Tae Gon Kang, Chan Moo Park, Yoo Jin Jung, Jong Cheol Lim, Sang Hyun Hong, Tae Soo Kim, Young Ho Park
  • Publication number: 20210061993
    Abstract: A thermoplastic resin composition comprises: about 100 parts by weight of a polycarbonate resin; about 50 parts by weight to about 250 parts by weight of a polyester resin; about 10 parts by weight to about 200 parts by weight of an aromatic polyphosphonate having a weight average molecular weight of about 65,000 g/mol to about 130,000 g/mol; and about 0.1 parts by weight to about 2 parts by weight of an organic acid comprising citric acid, lactic acid, malic acid, tartaric acid, and/or glycolic acid.
    Type: Application
    Filed: August 20, 2020
    Publication date: March 4, 2021
    Inventors: Da Heen JEONG, Tae Gon KANG, Eun Taek WOO, Sang Hoon LEE, Young Ho PARK, So Hyang SHIN
  • Patent number: 10927252
    Abstract: This thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a polycarbonate resin; approximately 1 to approximately 20 parts by weight of a rubber-modified vinyl-based copolymer resin; approximately 10 to approximately 30 parts by weight of a phosphorous-based flame retardant agent; approximately 3 to approximately 12 parts by weight of calcium carbonate; approximately 10 to approximately 40 parts by weight of talc; approximately 5 to approximately 11 parts by weight of wollastonite; and approximately 0.01 to approximately 5 parts by weight of a black pigment. The weight ratio of the calcium carbonate to the talc is approximately 1:1.5 to approximately 1:3.5, and the weight ratio of the talc to the wollastonite is approximately 1:0.3 to approximately 1:0.7.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 23, 2021
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Dong In Ha, Tae Gon Kang, Su Yeon Lee, Da Heen Jeong, Ki Hong Choi
  • Publication number: 20210047513
    Abstract: A polycarbonate resin composition of the present invention is characterized by comprising a polycarbonate resin; a polysiloxane-polycarbonate copolymer resin; silicone gum; a metal inorganic compound; a phosphorus flame retardant; and an inorganic filler. The polycarbonate resin composition has excellent properties in terms of flame retardancy, low heat generation characteristics, flame propagation characteristics, low flammability, etc., and does not have smoke toxicity.
    Type: Application
    Filed: April 17, 2019
    Publication date: February 18, 2021
    Inventors: Hyuk Jin JEONG, Ja Kwan KOO, Woo Jin LEE, Tae Gon KANG
  • Publication number: 20200377721
    Abstract: A thermoplastic resin composition comprises about 100 parts by weight of a polycarbonate resin; and about 0.5 parts by weight to about 3 parts by weight of polystyrene-poly(methyl methacrylate) copolymer particles, wherein the polystyrene-poly(methyl methacrylate) copolymer particles include about 41 wt % to about 59 wt % of polystyrene and about 41 wt % to about 59 wt % of poly(methyl methacrylate) and have an average particle diameter of about 3 ?m to about 9 ?m and a coefficient of variation (CV) of about 20% to about 40%. The thermoplastic resin composition can have good properties in terms of light transmission, light diffusion and balance therebetween.
    Type: Application
    Filed: May 26, 2020
    Publication date: December 3, 2020
    Inventors: Sang Hoon LEE, Tae Gon KANG, Eun Taek WOO, Da Heen JEONG