Patents by Inventor Han-jong You

Han-jong You 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: 9315658
    Abstract: Disclosed are an alkyl(meth)acrylate-based thermoplastic resin composition and a thermoplastic resin with modified scratch resistance and yellowness. The alkyl(meth)acrylate-based thermoplastic resin composition provides improved scratch resistance and low yellowness index while maintaining transparency, flowability, and impact strength, even when the total content of the vinyl cyan-based monomer contained in the resin composition is reduced to a level unattainable by conventional techniques, and the content of the alkyl(meth)acrylate-based monomer is increased.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: April 19, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Hyun Seok Yang, Dae Woo Lee, Han Jong You, Chang Hun Han, Seong Lyong Kim
  • Publication number: 20140039104
    Abstract: Disclosed are an alkyl(meth)acrylate-based thermoplastic resin composition and a thermoplastic resin with modified scratch resistance and yellowness. The alkyl(meth)acrylate-based thermoplastic resin composition provides improved scratch resistance and low yellowness index while maintaining transparency, flowability, and impact strength, even when the total content of the vinyl cyan-based monomer contained in the resin composition is reduced to a level unattainable by conventional techniques, and the content of the alkyl(meth)acrylate-based monomer is increased.
    Type: Application
    Filed: July 27, 2012
    Publication date: February 6, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Hyun Seok Yang, Dae Woo Lee, Han Jong You, Chang Hun Han, Seong Lyong Kim
  • Patent number: 8378024
    Abstract: The present invention relates to a low surface gloss styrene resin composition. The composition of the present invention is composed of (A) 80-99.9 weight % of the basic resin comprising rubber-modified styrene resin and (B) 0.1-20 weight % of syndiotactic polystyrene, the matting agent. The composition also includes (C) hydrogenated styrene block copolymer comprising styrene block and butadiene rubber block as a compatibilizer by 0.1-20 weight % for the total weight of the low surface gloss styrene resin composed of (A) the basic resin and (B) the matting agent and additionally includes (D) a plasticizer by 0.1-30 weight %. The composition of the present invention has excellent weatherability and impact-resistance in addition to the low surface gloss properties, so that it can be applied in various products, particularly exterior products for structures such as sidings and window frames, etc.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: February 19, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Yun-kyoung Cho, Seon-mo Son, Bong-keun Lee, Tae-bin Ahn, Han-jong You, Sung-tae Ahn
  • Patent number: 8198367
    Abstract: A thermoplastic acrylonitrile-butadiene-styrene (ABS) resin composition of the present invention comprises (a) a bimodal graft copolymer of a conjugated diene rubbery polymer whose average particle diameter of 800 to 1,500 ? and a conjugated diene rubbery polymer whose average particle diameter of 2,500 to 3,500 ?, the conjugated diene rubbery polymers being grafted with an aromatic vinyl compound and a vinyl cyanide compound, (b) an acrylic resin of a methacrylic or acrylic acid alkyl ester compound, an aromatic vinyl compound and a vinyl cyanide compound, (c) a copolymer of an aromatic vinyl compound and a vinyl cyanide compound, and (d) polysiloxane masterbatches. The ABS resin composition has excellent colorability and releasability while maintaining the inherent physical properties (e.g., impact strength and tensile strength) of the base resin.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: June 12, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Han Jong You, Seong Lyong Kim
  • Patent number: 7781523
    Abstract: The present invention relates to styrene-based thermoplastic resin compositions in which 1-10 weight part of a low-gloss additive selected from a group consisting of polyolefin copolymer(C) containing glycidyl methacrylate functional groups, styrene polymer(D) harboring two or more carboxyl functional groups per molecule, and a mixture of them, was added to 100 weight part of basic resin composed of 30-70 weight part of graft copolymer(A) containing rubber modified styrene and 30-70 weight part of copolymer(B) harboring styrene. The thermoplastic resin composition of the present invention has excellent impact strength and satisfactorily low gloss.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: August 24, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Byoung-il Kang, Han-jong You, Seong-lyong Kim
  • Publication number: 20100075165
    Abstract: The present invention relates to a low surface gloss styrene resin composition. The composition of the present invention is composed of (A) 80-99.9 weight % of the basic resin comprising rubber-modified styrene resin and (B) 0.1-20 weight % of syndiotactic polystyrene, the matting agent. The composition also includes (C) hydrogenated styrene block copolymer comprising styrene block and butadiene rubber block as a compatibilizer by 0.1-20 weight % for the total weight of the low surface gloss styrene resin composed of (A) the basic resin and (B) the matting agent and additionally includes (D) a plasticizer by 0.1-30 weight %. The composition of the present invention has excellent weatherability and impact-resistance in addition to the low surface gloss properties, so that it can be applied in various products, particularly exterior products for structures such as sidings and window frames, etc.
    Type: Application
    Filed: January 30, 2008
    Publication date: March 25, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Yun-kyoung Cho, Seon-mo Son, Bong-keun Lee, Tae-bin Ahn, Han-jong You, Sung-tae Ahn
  • Publication number: 20100048798
    Abstract: A thermoplastic acrylonitrile-butadiene-styrene (ABS) resin composition of the present invention comprises (a) a bimodal graft copolymer of a conjugated diene rubbery polymer whose average particle diameter of 800 to 1,500 ? and a conjugated diene rubbery polymer whose average particle diameter of 2,500 to 3,500 ?, the conjugated diene rubbery polymers being grafted with an aromatic vinyl compound and a vinyl cyanide compound, (b) an acrylic resin of a methacrylic or acrylic acid alkyl ester compound, an aromatic vinyl compound and a vinyl cyanide compound, (c) a copolymer of an aromatic vinyl compound and a vinyl cyanide compound, and (d) polysiloxane masterbatches. The ABS resin composition has excellent colorability and releasability while maintaining the inherent physical properties (e.g., impact strength and tensile strength) of the base resin.
    Type: Application
    Filed: August 19, 2009
    Publication date: February 25, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Han Jong You, Seong Lyong Kim
  • Patent number: 7514502
    Abstract: The present invention relates to an acrylonitrile (ASA) type thermoplastic resin composition with excellent weatherability and appearance properties, and more particularly, to an acrylate-styrene-acrylonitrile type thermoplastic resin composition comprising a) an acrylate-styrene-acrylonitrile graft copolymer; b) a butadienc-acrylonitrile methylmethacrylate graft copolymer; c) a copolymer of aromatic vinyl compound and vinylcyanide compound; and d) an alkyl acrylate copolymer, which has remarkably improved appearance properties such as scratch resistance, color (color stability) and gloss as well as excellent basic properties and weatherability.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: April 7, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Dong-sung Kim, Chan-hong Lee, Seong-lyong Kim, Han-jong You
  • Patent number: 7345112
    Abstract: The present invention relates to a thermoplastic resin composition and a preparation method of the same, more precisely, a thermoplastic resin composition containing acrylate-styrene-acrylonitrile (ASA) graft copolymer resin, aromatic polycarbonate resin, aromatic vinyl compound and vinyl cyan compound copolymer resin and styrene-acrylonitrile graft maleic anhydride (SAN-g-MAN) to improve exterior physical properties such as scratch resistance, surface gloss, colorability, weather resistance, etc, and a preparation method of the same.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: March 18, 2008
    Assignee: LG Chem, Ltd.
    Inventors: Han-jong You, Chan-hong Lee, Byoung-il Kang, Seong-lyong Kim
  • Publication number: 20060252875
    Abstract: The present invention relates to styrene-based thermoplastic resin compositions in which 1-10 weight part of a low-gloss additive selected from a group consisting of polyolefin copolymer(C) containing glycidyl methacrylate functional groups, styrene polymer(D) harboring two or more carboxyl functional groups per molecule, and a mixture of them, was added to 100 weight part of basic resin composed of 30-70 weight part of graft copolymer(A) containing rubber modified styrene and 30-70 weight part of copolymer(B) harboring styrene. The thermoplastic resin composition of the present invention has excellent impact strength and satisfactorily low gloss.
    Type: Application
    Filed: August 26, 2005
    Publication date: November 9, 2006
    Applicant: LG CHEM, LTD.
    Inventors: Byoung-il Kang, Han-jong You, Seong-lyong Kim
  • Publication number: 20060148992
    Abstract: The present invention relates to an acrylonitrile (ASA) type thermoplastic resin composition with excellent weatherability and appearance properties, and more particularly, to an acrylate-styrene-acrylonitrile type thermoplastic resin composition comprising a) an acrylate-styrene-acrylonitrile graft copolymer; b) a butadienc-acrylonitrile mcthylmethacrylate graft copolymer; c) a copolymer of aromatic vinyl compound and vinylcyanide compound; and d) an alkyl acrylate copolymer, which has remarkably improved appearance properties such as scratch resistance, color (color stability) and gloss as well as excellent basic properties and weatherability.
    Type: Application
    Filed: November 6, 2003
    Publication date: July 6, 2006
    Inventors: Dong-sung Kim, Chan-hong Lee, Seong-Iyong Kim, Han-jong You
  • Publication number: 20060106163
    Abstract: The present invention relates to a thermoplastic resin composition and a preparation method of the same, more precisely, a thermoplastic resin composition containing acrylate-styrene-acrylonitrile (ASA) graft copolymer resin, aromatic polycarbonate resin, aromatic vinyl compound and vinyl cyan compound copolymer resin and styrene-acrylonitrile graft maleic anhydride (SAN-g-MAN) to improve exterior physical properties such as scratch resistance, surface gloss, colorability, weather resistance, etc, and a preparation method of the same.
    Type: Application
    Filed: October 20, 2005
    Publication date: May 18, 2006
    Inventors: Han-jong You, Chan-hong Lee, Byoung-il Kang, Seong-lyong Kim
  • Publication number: 20060063887
    Abstract: The present invention relates to a styrene-based thermoplastic resin composition, and more particularly, to a styrene-based thermoplastic composition comprising: (A) 50-90 parts by weight of a rubber-modified styrene-containing graft polymer; (B) 10-50 parts by weight of a modified olefinic resin containing 0.2-1.0 parts, based on 100 parts by weight of the olefinic resin, of a nucleating agent; and (C) 2-10 parts by weight, based on 100 parts by weight of the sum of the components (A) and (B), of a linear styrene-based block copolymer. The composition is excellent in chemical resistance and thermal properties and has a great improvement, particularly in gloss, over the existing styrene-based blend resin.
    Type: Application
    Filed: September 21, 2005
    Publication date: March 23, 2006
    Inventors: Byoung-il Kang, Chan-hong Lee, Han-jong You, Seong-lyong Kim