Patents by Inventor Wangrae CHO

Wangrae CHO 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: 11884810
    Abstract: The present invention relates to a thermoplastic resin composition and a molded article including the same. More specifically, the thermoplastic resin composition of the present invention includes 100 parts by weight of a base resin consisting of 10 to 30% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) including an acrylate rubber having an average particle diameter of 0.05 to 0.15 ?m, 20 to 40% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) including an acrylate rubber having an average particle diameter of 0.3 to 0.5 ?m, 0 to 35% by weight of an aromatic vinyl polymer (B), and 10 to 60% by weight of a polymethacrylate (C); and 0.5 to 10 parts by weight of a polyamide (D).
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: January 30, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Da Eun Sung, Tae Hoon Kim, Chun Ho Park, Yong Hee An, Wangrae Cho, Ho Hoon Kim, Jeongmin Jang
  • Publication number: 20220135786
    Abstract: Disclosed is an ASA resin composition, a molded article including the ASA resin composition, and a method of manufacturing the molded article. Also disclosed is an ASA resin composition including 20 to 47% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer containing acrylate rubber having an average particle diameter of 50 to 150 nm as a core; 23 to 55% by weight of an alkyl methacrylate-aromatic vinyl compound-vinyl cyanide compound copolymer; and 25 to 45% by weight of a poly(alkyl methacrylate) resin, a molded article including the ASA resin composition, and a method of manufacturing the molded article. Also disclosed is an ASA resin composition having excellent colorability and transparency even at a processing thickness of a predetermined value while having excellent mechanical properties and processability, a molded article including the ASA resin composition, and a method of manufacturing the molded article are provided.
    Type: Application
    Filed: September 28, 2020
    Publication date: May 5, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Yong Hee AN, Tae Hoon KIM, Chun Ho PARK, Da Eun SUNG, Wangrae CHO, Ho Hoon KIM, Jeongmin JANG
  • Publication number: 20220033633
    Abstract: The present invention relates to a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same. More specifically, the thermoplastic resin composition of the present invention includes 100 parts by weight of a base resin consisting of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) containing acrylate rubber having an average particle diameter of 0.05 to 0.15 ?m as a core, an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) containing acrylate rubber having an average particle diameter of 0.3 to 0.6 ?m as a core, an aromatic vinyl polymer (B-1), and a heat-resistant aromatic vinyl polymer (B-2); and 0.5 to 10 parts by weight of a polyolefin elastomer (C). Within this range, the thermoplastic resin composition may have a heat deflection temperature (HDT) of 89° C. or more.
    Type: Application
    Filed: September 11, 2020
    Publication date: February 3, 2022
    Inventors: Jeongmin JANG, Tae Hoon KIM, Chun Ho PARK, Da Eun SUNG, Yong Hee AN, Wangrae CHO, Ho Hoon KIM
  • Publication number: 20220010122
    Abstract: The present invention relates to a thermoplastic resin composition and a molded article including the same. More specifically, the thermoplastic resin composition of the present invention includes 100 parts by weight of a base resin consisting of 10 to 30% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) including an acrylate rubber having an average particle diameter of 0.05 to 0.15 ?m, 20 to 40% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) including an acrylate rubber having an average particle diameter of 0.3 to 0.5 ?m, 0 to 35% by weight of an aromatic vinyl polymer (B), and 10 to 60% by weight of a polymethacrylate (C); and 0.5 to 10 parts by weight of a polyamide (D).
    Type: Application
    Filed: August 25, 2020
    Publication date: January 13, 2022
    Inventors: Da Eun SUNG, Tae Hoon KIM, Chun Ho PARK, Yong Hee AN, Wangrae CHO, Ho Hoon KIM, Jeongmin JANG