Patents by Inventor Gwang Seok Song

Gwang Seok Song 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: 20220389174
    Abstract: The present invention relates to a polycarbonate composite, a producing method thereof, and a molded article comprising same. More specifically, the present invention relates to: a polycarbonate composite comprising a matrix resin, which is a polycarbonate resin in which an anhydrosugar alcohol is copolymerized, and a nanomaterial dispersed in the matrix resin, wherein the polycarbonate composite exhibits a more remarkably improved tensile modulus and tensile strength than a conventional biopolycarbonate resin composite, by using, as a diol component, a solid dispersion or molten dispersion obtained by introducing a nanomaterial (dispersible substance) into an anhydrosugar alcohol (dispersion medium) in the form of an aqueous dispersion at the time of manufacture, and has uniform physical properties as the nanomaterial is uniformly dispersed in the composite; a producing method thereof; and a molded article comprising same.
    Type: Application
    Filed: November 11, 2020
    Publication date: December 8, 2022
    Applicant: SAMYANG CORPORATION
    Inventors: Jun Seop IM, Gwang Seok SONG, Hoon RYU, Seung Hyun YOO
  • Publication number: 20220275197
    Abstract: The present invention relates to an anhydrosugar alcohol-alkylene glycol composition, an anhydrosugar alcohol-based urethane-modified polyol composition, and use thereof for epoxy resin composition.
    Type: Application
    Filed: July 9, 2020
    Publication date: September 1, 2022
    Applicant: SAMYANG CORPORATION
    Inventors: Jae Hoon LEE, Gwang Seok SONG, Jae Guk NOH, Hoon RYU
  • Publication number: 20220177636
    Abstract: The present invention relates to a polyol composition comprising anhydrosugar alcohols and an anhydrosugar alcohol polymer and, more specifically, to a polyol composition comprising a monoanhydrosugar alcohol, a dianhydrosugar alcohol, and a polymer of a monoanhydrosugar alcohol and/or a dianhydrosugar alcohol, the polyol composition being usable in various fields since the physical property conditions of the composition, such as number average molecular weight (Mn), polydispersity index (PDI) and hydroxyl value, satisfy specific levels, and, particularly, being capable of remarkably improving the physical properties of a polyurethane, such as tensile strength and elongation, when used as a polyurethane chain extender.
    Type: Application
    Filed: June 3, 2020
    Publication date: June 9, 2022
    Applicant: SAMYANG CORPORATION
    Inventors: Jae Hoon LEE, Hoon RYU, Gwang Seok SONG, Jae Guk NOH, Seung Hyun YOO, Jun Seop IM, Won Hyun JEON
  • Publication number: 20210309670
    Abstract: The present invention relates to a diisocynate compound having anhydrosugar alcohol core and a preparation method therefor and, more specifically, to a diisocynate compound having anhydrosugar alcohol core and a preparation method therefor, wherein the diisocynate compound is prepared through a reaction with a nitrile compound, a hydrogenation reaction, and an end-group substitution reaction while a recyclable, plant-based anhydrosugar alcohol or anhydrosugar alcohol-alkylene glycol is used as a raw material, and the diisocynate compound can be utilized in various fields, such as soft or hard polyurethane expanded foams, molded foams, coating, adhesives or glues, fibers, and polymer synthesis.
    Type: Application
    Filed: August 8, 2019
    Publication date: October 7, 2021
    Applicant: SAMYANG CORPORATION
    Inventors: Seung Hyun YOO, Hoon RYU, Jun Seop IM, Gwang Seok SONG, Won Hyun JEON
  • Publication number: 20210238413
    Abstract: The present invention relates to a solid dispersion, a preparation method therefor, a chain-extended polyurethane using same, and an epoxy resin composition comprising same and, more particularly, to a solid dispersion in which an inorganic or organic material-derived isotropic or anisotropic substance is used as a dispersoid and dispersed at room temperature in a solid-phase dispersion medium such as polyols and sugars, whereby the dispersion can be easily stored and used, reduce transportation cost, prevent or alleviate the aggregation or precipitation caused during the storage of products, with the results of working efficiency improvement and processing cost reduction, and, when applied to polyurethane, can increase strength and provide an improved strength, compared to conventional curing agent, a preparation method therefor, a chain-extended polyurethane using same, and an epoxy resin composition comprising same.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 5, 2021
    Applicant: SAMYANG CORPORATION
    Inventors: Gwang Seok SONG, Hoon RYU, Jun Seop IM, Seung Hyun YOO, Won Hyun JEON
  • Publication number: 20210147609
    Abstract: The present invention relates to a composition for forming an environmentally friendly polyurethane foam, the composition having improved storage stability, air permeability, and anti-oxidation characteristics and to a method for manufacturing a polyurethane foam and, more specifically, to an isocyanate pre-polymer prepared by reaction of a polyisocyanate and a polyol component comprising a bio-polyol, to a composition for forming an environmentally friendly polyurethane foam, the composition having improved storage stability, air permeability, and anti-oxidative characteristics by comprising the pre-polymer as one component, to a method for manufacturing a polyurethane foam using the same, and to an environmentally friendly polyurethane foam manufactured thereby.
    Type: Application
    Filed: June 22, 2018
    Publication date: May 20, 2021
    Applicant: SAMYANG CORPORATION
    Inventors: Gwang Seok SONG, Seung Hyun YOO, Hoon RYU, Hyuk Min PARK, Jun Seop IM
  • Publication number: 20200378063
    Abstract: A method of manufacturing a fabric material with an embossed layer, and a fabric material manufactured thereby are provided. The method includes applying a composition containing a synthetic resin, an embossing resin, and an additive on one surface of the fabric sheet to form an embossed coating layer and drying the embossed coating layer. The fabric material is advantageous in that the embossed coating layer is securely retained on the fabric sheet, various designs giving an aesthetic impression, exhibiting a look of a specific texture and roughness, and having various patterns can be easily printed thereon, and decoration effects as interior and exterior house finishing goods can be enhanced with the use of the fabric material.
    Type: Application
    Filed: July 21, 2020
    Publication date: December 3, 2020
    Inventors: Gwang Seok Song, Gwang Rae Cho