Patents by Inventor Je-sun Yoo

Je-sun Yoo 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: 8133942
    Abstract: Provided is a thermoplastic resin composition having excellent flame resistance, colorability, and scratch resistance, including: A) 100 parts by weight of a basic resin comprising 10 to 89 wt % of acrylonitrile-butadiene-styrene copolymer, 89 to 10 wt % of styrene-acrylonitrile copolymer, and 1 to 40 wt % of methylmethacrylate polymer; B) 1 to 30 parts by weight of bromoalkyl or bromophenyl cyanurate compounds; and C) 1 to 20 parts by weight of antimony compound, thereby, making it possible to provide the thermoplastic resin composition having excellent flame resistance, impact strength, scratch resistance, colorability, and surface hardness as synergy effects.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: March 13, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Je-sun Yoo, Ki-young Nam, Yong-yeon Hwang, You-seok Seo, Hyeon-gook Kim, Myeong-soo Song
  • Publication number: 20100210773
    Abstract: The present invention provides a flame retardant resin composition comprising (A) 100 weight part of a basic resin comprising acrylonitrile-butadiene-styrene copolymer resin and styrene-acrylonitrile copolymer resin; and (B) 10-30 weight part of a bromine-based organic compound flame retardant, and selectively comprising (C) 1-20 weight part of an antimony-based auxiliary flame retardant and (D) 1-10 weight part of one or more compounds selected from the group consisting of metalstearate and stearamide compounds, wherein the bromine-based organic compound flame retardant (B) is octabromodiphenyl ethane. The flame retardant resin composition of the present invention has excellent flame retardancy, impact strength and melt flow index.
    Type: Application
    Filed: August 29, 2008
    Publication date: August 19, 2010
    Inventors: You-seok Seo, Xi-young Nam, Yong-Yeon Hwang, Je-sun Yoo, Hyeon-gook Kim, Myeong-soo Song
  • Publication number: 20100069540
    Abstract: Provided is a thermoplastic resin composition having excellent flame resistance, colorability, and scratch resistance, including: A) 100 parts by weight of a basic resin comprising 10 to 89 wt % of acrylonitrile-butadiene-styrene copolymer, 89 to 10 wt % of styrene-acrylonitrile copolymer, and 1 to 40 wt % of methylmethacrylate polymer; B) 1 to 30 parts by weight of bromoalkyl or bromophenyl cyanurate compounds; and C) 1 to 20 parts by weight of antimony compound, thereby, making it possible to provide the thermoplastic resin composition having excellent flame resistance, impact strength, scratch resistance, colorability, and surface hardness as synergy effects.
    Type: Application
    Filed: September 17, 2009
    Publication date: March 18, 2010
    Applicant: LG Chem, Ltd.
    Inventors: Je-sun Yoo, Ki-young Nam, Yong-yeon Hwang, You-seok Seo, Hyeon-gook Kim, Myeong-soo Song
  • Patent number: 7629402
    Abstract: The present invention relates to an acrylonitrile-butadiene-styrene resin composition, and more precisely, an acrylonitrile-butadiene-styrene resin composition which is prepared by adding a brominated organic compound flame retardant, an antimony flame retardant auxiliary and one or more other compounds selected from a group consisting of metal stearate and stearamide compounds to a basic resin composed of acrylonitrile-butadiene-styrene copolymer and styrene-acrylonitrile copolymer. The acrylonitrile-butadiene-styrene resin composition of the present invention not only has excellent flame resistance but also has improved thermostability and weatherability.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: December 8, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Si-kyung Ryu, Yong-yeon Hwang, Jin-woo Yi, Young-young Hwang, Je-sun Yoo
  • Publication number: 20070142524
    Abstract: The present invention relates to an acrylonitrile-butadiene-styrene resin composition, and more precisely, an acrylonitrile-butadiene-styrene resin composition which is prepared by adding a brominated organic compound flame retardant, an antimony flame retardant auxiliary and one or more other compounds selected from a group consisting of metal stearate and stearamide compounds to a basic resin composed of acrylonitrile-butadiene-styrene copolymer and styrene-acrylonitrile copolymer. The acrylonitrile-butadiene-styrene resin composition of the present invention not only has excellent flame resistance but also has improved thermostability and weatherability.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 21, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Si-kyung RYU, Yong-yeon HWANG, Jin-woo YI, Young-young HWANG, Je-sun YOO