Patents by Inventor Sang Wook Na

Sang Wook Na 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: 20220098408
    Abstract: The present disclosure provides a thermoplastic molding composition having excellent chemical resistance and an automobile component including a molded article thereof.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 31, 2022
    Inventors: Kwang Su RYU, Sang Wook NA, Sun Mo SON, Min Han KWAK
  • Patent number: 10301503
    Abstract: The present invention relates to a poly(arylene ether) resin composition and a cable coated with the same. More particularly, the present invention relates to a poly(arylene ether) resin composition, including 20 to 40% by weight of a poly(arylene ether) resin, 15 to 35% by weight of a low-molecular weight styrene-based block copolymer having a weight-average molecular weight of 90,000 g/mol or less, 10 to 30% by weight of a high-molecular weight styrene-based block copolymer having a weight-average molecular weight of 95,000 g/mol or more, 1 to 20% by weight of a flame retardant, and 0 to 20% by weight of an additive. In accordance with the present invention, a poly(arylene ether) resin composition having superior flame retardancy, tensile strength, flexibility, extrusion processability, elongation, and appearance characteristics and a cable coated with the same are provided.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: May 28, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hwan Lim, Nam Jib Park, Gun Ko, Soo Min Lee, Sang Wook Na, Byung Wook Lee
  • Patent number: 10280303
    Abstract: The present invention relates to a non-halogen thermoplastic resin composition and a cable including the same. More particularly, the present invention provides a non-halogen thermoplastic resin composition in which a halogen-based flame retardant causing environmental and human health problems is not included and the content of a phosphorus flame retardant causing decrease in appearance and properties is decreased, but which has identical or superior mechanical strength, chemical resistance, heat resistance, and flame retardancy, compared to existing thermoplastic resin compositions, and a cable including the same.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: May 7, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Gun Ko, Sung Hwan Lim, Byung Wook Lee, Soo Min Lee, Sang Wook Na, Sung Moon Choi
  • Patent number: 10208195
    Abstract: The present invention relates to a polypropylene resin composition and a cable cladded with the same. More particularly, the present invention relates to a polypropylene resin composition, including 25 to 35% by weight of a polypropylene polymer, 15 to 25% by weight of a styrene block copolymer, 15 to 25% by weight of a poly(arylene ether) resin, 26 to 35% by weight of a phosphorus flame retardant, and 0 to 10% by weight of a processing additive. In accordance with the present invention, a polypropylene resin composition including a small amount of flame retardant but exhibiting excellent flame resistance, insulation performance, processability, and property balance, and a cable cladded with the same are provided.
    Type: Grant
    Filed: June 12, 2016
    Date of Patent: February 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hwan Lim, Byung Wook Lee, Gun Ko, Soo Min Lee, Sang Wook Na
  • Publication number: 20180002523
    Abstract: The present invention relates to a non-halogen thermoplastic resin composition and a cable including the same. More particularly, the present invention provides a non-halogen thermoplastic resin composition in which a halogen-based flame retardant causing environmental and human health problems is not included and the content of a phosphorus flame retardant causing decrease in appearance and properties is decreased, but which has identical or superior mechanical strength, chemical resistance, heat resistance, and flame retardancy, compared to existing thermoplastic resin compositions, and a cable including the same.
    Type: Application
    Filed: November 24, 2016
    Publication date: January 4, 2018
    Inventors: Gun KO, Sung Hwan LIM, Byung Wook LEE, Soo Min LEE, Sang Wook NA, Sung Moon CHOI
  • Publication number: 20170306175
    Abstract: The present invention relates to a poly(arylene ether) resin composition and a cable coated with the same. More particularly, the present invention relates to a poly(arylene ether) resin composition, including 20 to 40% by weight of a poly(arylene ether) resin, 15 to 35% by weight of a low-molecular weight styrene-based block copolymer having a weight-average molecular weight of 90,000 g/mol or less, 10 to 30% by weight of a high-molecular weight styrene-based block copolymer having a weight-average molecular weight of 95,000 g/mol or more, 1 to 20% by weight of a flame retardant, and 0 to 20% by weight of an additive. In accordance with the present invention, a poly(arylene ether) resin composition having superior flame retardancy, tensile strength, flexibility, extrusion processability, elongation, and appearance characteristics and a cable coated with the same are provided.
    Type: Application
    Filed: June 13, 2016
    Publication date: October 26, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Sung Hwan LIM, Nam Jib PARK, Gun KO, Soo Min LEE, Sang Wook NA, Byung Wook LEE
  • Publication number: 20170292015
    Abstract: The present invention relates to a polypropylene resin composition and a cable cladded with the same. More particularly, the present invention relates to a polypropylene resin composition, including 25 to 35% by weight of a polypropylene polymer, 15 to 25% by weight of a styrene block copolymer, 15 to 25% by weight of a poly(arylene ether) resin, 26 to 35% by weight of a phosphorus flame retardant, and 0 to 10% by weight of a processing additive. In accordance with the present invention, a polypropylene resin composition including a small amount of flame retardant but exhibiting excellent flame resistance, insulation performance, processability, and property balance, and a cable cladded with the same are provided.
    Type: Application
    Filed: June 12, 2016
    Publication date: October 12, 2017
    Inventors: Sung Hwan LIM, Byung Wook LEE, Gun KO, Soo Min LEE, Sang Wook NA
  • Patent number: 9631091
    Abstract: Disclosed are a flame retardant poly(arylene ether) resin composition and a flame retardant non-crosslinked cable. According to the present invention, provided are a flame retardant poly(arylene ether) resin composition to provide flexibility, flame retardancy, productivity, extrusion processability, etc. while maintaining heat resistance, and a flame retardant non-crosslinked cable manufactured using the composition.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: April 25, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Sung Hwan Lim, Nam Jib Park, Sang Ho Lee, Soo Min Lee, Jong Kuk Choi, Sang Wook Na
  • Patent number: 9279052
    Abstract: Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same. More specifically, disclosed is a thermoplastic polyester elastomer resin composition which comprises a glycidyl-modified ethylene-octene copolymer resin, as a chain extension/hydrolysis resistance agent for blown and extrusion molding to improve melt viscosity, and increases a molecular weight through reaction extrusion and thus exhibits superior heat resistance, weather resistance, heat aging resistance, hydrolysis resistance, fatigue resistance, melt viscosity and parison stability, and in particular, exhibits superior blow molding, causes no gelation, and reduces production of odor-causing substances such as volatile organic compounds (TVOC) during blow molding, thereby making a balance between physical properties, molding property and operation environments.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: March 8, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Ho Dong Kim, Sang Wook Na, A Young Hur, Soo Min Lee, Sung Tae Ahn
  • Publication number: 20160017146
    Abstract: Disclosed are a flame retardant poly(arylene ether) resin composition and a flame retardant non-crosslinked cable. According to the present invention, provided are a flame retardant poly(arylene ether) resin composition to provide flexibility, flame retardancy, productivity, extrusion processability, etc. while maintaining heat resistance, and a flame retardant non-crosslinked cable manufactured using the composition.
    Type: Application
    Filed: December 10, 2014
    Publication date: January 21, 2016
    Inventors: Sung Hwan LIM, Nam Jib PARK, Sang Ho LEE, Soo Min LEE, Jong Kuk CHOI, Sang Wook NA
  • Publication number: 20150267049
    Abstract: Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same. More specifically, disclosed is a thermoplastic polyester elastomer resin composition which comprises a glycidyl-modified ethylene-octene copolymer resin, as a chain extension/hydrolysis resistance agent for blown and extrusion molding to improve melt viscosity, and increases a molecular weight through reaction extrusion and thus exhibits superior heat resistance, weather resistance, heat aging resistance, hydrolysis resistance, fatigue resistance, melt viscosity and parison stability, and in particular, exhibits superior blow molding, causes no gelation, and reduces production of odor-causing substances such as volatile organic compounds (TVOC) during blow molding, thereby making a balance between physical properties, molding property and operation environments.
    Type: Application
    Filed: June 18, 2014
    Publication date: September 24, 2015
    Inventors: Ho Dong Kim, Sang Wook Na, A Young Hur, Soo Min Lee, Sung Tae Ahn
  • Patent number: 8716382
    Abstract: Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same. More specifically, disclosed is a thermoplastic polyester elastomer resin composition which comprises a glycidyl group-modified ethylene-octene based copolymer resin, as a chain extension/hydrolysis resistance agent for blow and extrusion molding to improve melt viscosity, and increases a molecular weight through reaction extrusion and thus exhibits superior heat resistance, weather resistance, heat aging resistance, hydrolysis resistance, fatigue resistance properties, melt viscosity and parison stability, and in particular, exhibits superior blow molding, contains no gel, reduces production of odor-causing substances such as volatile organic compounds (TVOC) during blow molding, and maintains a balance between physical properties, moldability and operation environments.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: May 6, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sang Wook Na, Ho Dong Kim, Mi Ah Lee, Gi Dae Choi, Ji Seon Kim
  • Publication number: 20140058019
    Abstract: Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same.
    Type: Application
    Filed: April 2, 2013
    Publication date: February 27, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Sang Wook Na, Ho Dong Kim, Mi Ah Lee, Gi Dae Choi, Ji Seon Kim