Patents by Inventor Hye-Kyong Lee

Hye-Kyong Lee 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: 8013063
    Abstract: The present invention relates to acryl-silicone hybrid impact modifiers, the method of their manufacture, and vinyl chloride resin compositions containing the above. The acryl-silicone hybrid impact modifier of the present invention contains a seed obtained through emulsion copolymerization of vinyl monomers and hydrophilic monomers; an acryl-silicone hybrid rubber core covering the seed in which a polyorganosiloxane rubber phase is dispersed locally onto the inner part and surface of the acrylic rubber core containing alkyl acrylate polymers and a shell covering the above rubber core and containing alkyl methacrylate polymers. Thermoplastic resins containing the above, particularly by being added to vinyl chloride resins, they have effects of granting superior impact resistance, weatherability, and high gloss.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: September 6, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Kwang-jin Lee, Jeong-heon Ahn, Hye-kyong Lee
  • Patent number: 7745536
    Abstract: The present invention relates to an acryl-silicon rubber complex polymer which has a seed-core-shell structure wherein vinyl monomer and hydrophilic monomer are cross-linked on the seed; the acryl-silicon complex IPN core having an IPN (interpenetrating network) structure formed by radical polymerization of acryl monomer and hydrosilyation of silicon rubber in which silicon rubber particles are dispersed by being cross-linked to acryl rubber, in a continuous phase, is formed on the seed; and a shell prepared by graft-polymerization of C1-C4 alkyl methacrylate to the acryl-silicon complex IPN core is formed on the core, and a method of preparation and use of the same, thereby having excellent impact resistance, weatherability and gloss, so that it can be effectively used as an impact modifier for vinyl chloride resin.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: June 29, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Kwang-jin Lee, Jeong-heon Ahn, Hye-kyong Lee, Boo-ho Seo, Ji-min Lee
  • Publication number: 20070100073
    Abstract: The present invention relates to an acryl-silicon rubber complex polymer and a method for the preparation and use of the same. More precisely, the present invention relates to an acryl-silicon rubber complex polymer which has a seed-core-shell structure wherein the vinyl monomer and hydrophilic monomer are cross-linked on the seed; the acryl-silicon complex IPN core having an IPN (interpenetrating network) structure in which silicon rubber particles are dispersed by being cross-linked to acryl rubber, in a continuous phase, is formed on the seed; and a shell prepared by graft-polymerization of C1˜C4 alkyl methacrylate to the acryl-silicon complex IPN core is formed on the core, and a method of preparation and use of the same. The acryl-silicon rubber complex polymer of the present invention has excellent impact resistance, weatherability and gloss, so that it can be effectively used as an impact modifier for vinyl chloride resin.
    Type: Application
    Filed: October 13, 2006
    Publication date: May 3, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Kwang-jin LEE, Jeong-heon AHN, Hye-kyong LEE, Boo-ho SEO, Ji-min LEE
  • Publication number: 20070021557
    Abstract: The present invention relates to acryl-silicone hybrid impact modifiers, the method of their manufacture, and vinyl chloride resin compositions containing the above. The acryl-silicone hybrid impact modifier of the present invention is comprised of a) 0.01 to 10 parts by weight of a seed obtained through emulsion copolymerization of vinyl monomers and hydrophilic monomers; b) 60 to 94 parts by weight of an acryl-silicone hybrid rubber core covering the seed in which a polyorganosiloxane rubber phase is dispersed locally onto the inner part and surface of the acrylic rubber core containing alkyl acrylate polymers of which alkyl group has 1 to 8 carbon atoms; and c) 6 to 40 parts by weight of a shell covering the above rubber core and containing alkyl methacrylate polymers of which alkyl group has 1 to 4 carbon atoms. Thermoplastic resins containing the above, particularly by being added to vinyl chloride resins, they have effects of granting superior impact resistance, weatherability, and high gloss.
    Type: Application
    Filed: May 13, 2004
    Publication date: January 25, 2007
    Applicant: LG CHEM. LTD.
    Inventors: Kwang-jin Lee, Jeong-heon Ahn, Hye-kyong Lee
  • Patent number: 6660821
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom. More particularly, the present invention is to provide the vinyl-phenyl monomers expressed by formula (1) which are capable of various polymerization such as radical polymerization, cation polymerization, anion polymerization and metallocene catalyzed polymerization due to resonance effect of phenyl group and changing characteristics variously and thus, suitable in the synthesis of general-purpose polymers which can be used in photo-functional materials by forming a complex with a metal component having an optical characteristic.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: December 9, 2003
    Assignee: Kwangju Institute of Science and Technology
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee
  • Publication number: 20030176709
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom. More particularly, the present invention is to provide the vinyl-phenyl monomers expressed by formula (1) which are capable of various polymerization such as radical polymerization, cation polymerization, anion polymerization and metallocene catalyzed polymerization due to resonance effect of phenyl group and changing characteristics variously and thus, suitable in the synthesis of general-purpose polymers which can be used in photo-functional materials by forming a complex with a metal component having an optical characteristic.
    Type: Application
    Filed: February 14, 2003
    Publication date: September 18, 2003
    Applicant: Kwangju Institute of Science and Technology
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee
  • Patent number: 6545159
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: April 8, 2003
    Assignee: Kwangju Institute of Science and Technology
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee
  • Publication number: 20020198346
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom. More particularly, the present invention is to provide the vinyl-phenyl monomers expressed by formula (1) which are capable of various polymerization such as radical polymerization, cation polymerization, anion polymerization and metallocene catalyzed polymerization due to resonance effect of phenyl group and changing characteristics variously and thus, suitable in the synthesis of general-purpose polymers which can be used in photo-functional materials by forming a complex with a metal component having an optical characteristic.
    Type: Application
    Filed: August 10, 2001
    Publication date: December 26, 2002
    Applicant: KWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee