Patents by Inventor Chun-Ho Park

Chun-Ho Park 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: 12134689
    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: Grant
    Filed: September 11, 2020
    Date of Patent: November 5, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jeongmin Jang, Tae Hoon Kim, Chun Ho Park, Da Eun Sung, Yong Hee An, Wangrae Cho, Ho Hoon Kim
  • Patent number: 12031024
    Abstract: A thermoplastic resin composition and a molded article including the same can include 100 parts by weight of a base resin including 10 to 50% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) containing acrylate rubber having an average particle diameter of 0.3 to 0.5 ?m, 5 to 40% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) containing acrylate rubber having an average particle diameter of 0.05 ?m or more and less than 0.3 ?m, and 20 to 65% by weight of an aromatic vinyl polymer (B), and 0.5 to 12 parts by weight of a polyamide (C). The thermoplastic resin composition can have a solvent resistance of 15 days or more.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: July 9, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Chun Ho Park, Tae Hoon Kim, Daeun Sung, Yong Hee An, Wangrae Joe, Ho Hoon Kim, Jeongmin Jang
  • Publication number: 20240182694
    Abstract: The present invention relates to a thermoplastic resin composition and an exterior material including the same. More particularly, the present invention has an effect of providing a thermoplastic resin composition having even and low gloss while maintaining mechanical properties and processability equal or superior to those of a conventional ASA resin; having natural coloring through control for a uniform refractive index; and being capable of reducing appearance defects due to excellent co-extrusion processability with PVC and an exterior material including the thermoplastic resin.
    Type: Application
    Filed: February 7, 2022
    Publication date: June 6, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Chun Ho PARK, Tae Hoon KIM, Daeun SUNG, Yong Hee AN, Wangrae JOE, Jeongmin JANG
  • Patent number: 11999845
    Abstract: A thermoplastic resin composition and a molded article including the same are disclosed in which the thermoplastic resin composition includes 100 parts by weight of a base resin including an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and a molded article including the thermoplastic resin composition, wherein the thermoplastic resin composition satisfies Equations 1 and 2 below: G?20,??[Equation 1] wherein G denotes the gloss of a sheet having a size of 0.15 T as measured at 60° using a gloss meter, Hz<Tt,??[Equation 2] wherein Hz and Tt denote the haze (%) and total light transmittance (%) of a sheet having a size of 0.15 T, respectively.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: June 4, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Chun Ho Park, Tae Hoon Kim, Daeun Sung, Yong Hee An, Wangrae Joe, Ho Hoon Kim, Jeongmin Jang
  • Patent number: 11999841
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. The thermoplastic resin composition includes a first propylene-ethylene copolymer, a second propylene-ethylene copolymer, a thermoplastic elastomer, an inorganic filler, and a sodium-phosphate-based nucleating agent as appropriate, and thus a molded article produced therefrom can exhibit improved mechanical rigidity, impact resistance, and dimensional stability. Even when formed to a low thickness for weight reduction, the molded article can be imparted with excellent processability, high tensile strength, a high flexural modulus, and high impact strength.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: June 4, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, GS CALTEX CORPORATION
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Seok Jin Yong, Hyung Tak Lee
  • Patent number: 11993702
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a base resin including at least two polypropylene-based resins having different melt indexes, an elastomer having a melt index (190° C., 2.16 kg) of 20 g/10 min to 35 g/10 min as measured by ASTM D1238, and inorganic particles, and has a flexural modulus (FM) of 2,500 MPa or more and a coefficient of linear thermal expansion (CLTE) of 60 ?m/m° C. or less.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: May 28, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, LOTTE CHEMICAL CORPORATION
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Kyung Hwan Lim, Eun Hwa Jang
  • Publication number: 20240110049
    Abstract: The present disclosure relates to a thermoplastic resin composition and an exterior material including the same. The thermoplastic resin composition included 90 to 99.5% by weight of styrene-based resins each including 5 to 30% by weight of acrylate rubber having a DLS average particle diameter of 0.25 to 0.32 ?m or a TEM average particle diameter of 0.2 to 0.27 ?m based on a total weight of the styrene-based resins; and 0.5 to 10% by weight of a polyamide resin, and an exterior material including the thermoplastic resin composition. According to the present disclosure, a low-gloss thermoplastic resin composition having excellent aesthetics, such as softness, luxuriousness, and naturalness, due to uniformity, low gloss, and improvement in surface texture while having mechanical properties and processability equal or superior to those of conventional ASA resins; and an exterior material including the low-gloss thermoplastic resin composition may be provided.
    Type: Application
    Filed: December 11, 2020
    Publication date: April 4, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Daeun SUNG, Tae Hoon KIM, Chun Ho PARK, Yong Hee AN, Wangrae JOE, Ho Hoon KIM, Jeongmin JANG
  • Patent number: 11905402
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a polypropylene-based resin having an isotactic pentad fraction of 96% or more as measured by 13C-NMR, a thermoplastic elastomer, an inorganic filler having an average particle diameter of 0.1 ?m to 5 ?m, and a compatibilizer, and has a flexural modulus of 2,500 MPa or more and a coefficient of linear thermal expansion of 60 ?m/m·° C. or less.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: February 20, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HANWHA TOTAL ENERGIES PETROCHEMICAL CO., LTD.
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Jeong Gil Ko, Yoon Hwan Lee
  • Patent number: 11884802
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a polypropylene composite resin including high-crystalline polypropylene and the like, an elastomer, and an inorganic filler.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: January 30, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HDC HYUNDAI ENGINEERING PLASTICS CO., LTD.
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Jin Bo Chae
  • 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
  • Patent number: 11820884
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a first polypropylene resin having crystallinity of 50% to 80%, a second polypropylene resin having a coefficient of linear thermal expansion of 70 ?m/m·° C. to 90 ?m/m·° C., an elastomer, and an inorganic filler.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: November 21, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DAE HA CO., LTD.
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Kwan Suk Ryu, Tae Kyung Lee
  • Publication number: 20230312648
    Abstract: The present invention relates to novel peptides and a pharmaceutical compositions comprising the same. The peptide compounds and compositions disclosed herein are useful as therapeutic agents for treating eye diseases. When administered to the eyes, the peptide compounds and compositions disclosed herein increase the amount of tear secretion and promotes recovery of a damaged cornea.
    Type: Application
    Filed: February 22, 2023
    Publication date: October 5, 2023
    Inventors: Taegon Baik, Jong-Yun Choi, Gyoung-Wook Min, Chun-Ho Park
  • Publication number: 20230242752
    Abstract: The present disclosure relates to a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. More particularly, the present disclosure relates to a thermoplastic resin composition including 35 to 75% by weight of an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A) containing alkyl acrylate rubber having an average particle diameter of 40 to 120 nm and 25 to 65% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (B) having a weight average molecular weight of 50,000 to 180,000 g/mol, wherein the thermoplastic resin composition has an alkyl acrylate coverage value (X) of 70% or more as calculated by Equation 1.
    Type: Application
    Filed: December 14, 2021
    Publication date: August 3, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Yong Hee AN, Chun Ho PARK, Jeongmin JANG, Tae Hoon KIM, Daeun SUNG, Wangrae JOE
  • Publication number: 20230235161
    Abstract: The present disclosure relates to a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. For example, the present disclosure relates to a thermoplastic resin composition including 35 to 85% by weight of an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A) containing alkyl acrylate rubber having an average particle diameter of 50 to 120 nm and 15 to 65% by weight of a polymethacrylate resin (B). The thermoplastic resin composition has an alkyl acrylate coverage value (X) of 70% or more as calculated by Equation 1. The thermoplastic resin composition may have beneficial mechanical properties, such as impact strength, tensile strength, and flexural strength, surface hardness, transparency, and colorability and may be capable of preventing occurrence of whitening during bending due to beneficial non-whitening properties.
    Type: Application
    Filed: December 14, 2021
    Publication date: July 27, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Yong Hee AN, Chun Ho PARK, Jeongmin JANG, Tae Hoon KIM, Daeun SUNG, Wangrae JOE
  • Publication number: 20230174769
    Abstract: The present disclosure relates to a thermoplastic resin composition and an exterior material including the same. The thermoplastic resin composition has low gloss and has mechanical properties and processability equal or superior to those of conventional ASA resins. The thermoplastic resin composition also has improved viscoelastic properties that can lead to excellent processability during the manufacture of a co-extruded product and excellent adhesion within the co-extruded product. The thermoplastic resin composition is also capable of reducing surface defects.
    Type: Application
    Filed: January 27, 2022
    Publication date: June 8, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Daeun SUNG, Wangrae JOE, Daewoong LEE, Tae Hoon KIM, Chun Ho PARK, Yong Hee AN, Jeongmin JANG
  • Publication number: 20230131897
    Abstract: A thermoplastic resin composition can include 25 to 75% by weight of an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A) containing alkyl acrylate rubber having an average particle diameter of 50 to 120 nm; and 25 to 75% by weight of a (meth)acrylic acid alkyl ester compound-aromatic vinyl compound-vinyl cyanide compound non-graft copolymer (B). The thermoplastic resin composition has an alkyl acrylate coverage value (X) of 67% or more as calculated by Equation 1. A method of preparing the thermoplastic resin composition, and a molded article including the thermoplastic resin composition are also disclosed.
    Type: Application
    Filed: December 7, 2021
    Publication date: April 27, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Jeongmin JANG, Chun Ho PARK, Yong Hee AN, Tae Hoon KIM, Daeun SUNG, Wangrae JOE
  • Publication number: 20230109199
    Abstract: The present disclosure relates to a thermoplastic resin composition including 25 to 75% by weight of an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A) containing alkyl acrylate rubber having an average particle diameter of 50 to 120 nm; 18 to 47% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (B) having a weight average molecular weight of 70,000 to 150,000 g/mol; and 3 to 28% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (C) having a weight average molecular weight of greater than 150,000 g/mol and less than or equal to 250,000 g/mol, wherein the thermoplastic resin composition has an alkyl acrylate coverage value (X) of 67% or more as calculated by Equation 1. A method of preparing the thermoplastic resin composition, and a molded article including the thermoplastic resin composition are also disclosed.
    Type: Application
    Filed: December 7, 2021
    Publication date: April 6, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Jeongmin JANG, Chun Ho PARK, Yong Hee AN, Tae Hoon KIM, Daeun SUNG, Wangrae JOE
  • Patent number: 11613558
    Abstract: The present invention relates to novel peptides and a pharmaceutical compositions comprising the same. The peptide compounds and compositions disclosed herein are useful as therapeutic agents for treating eye diseases. When administered to the eyes, the peptide compounds and compositions disclosed herein increase the amount of tear secretion and promotes recovery of a damaged cornea.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: March 28, 2023
    Assignee: Yuyu Pharma, Inc.
    Inventors: Taegon Baik, Jong-Yun Choi, Gyoung-Wook Min, Chun-Ho Park
  • Publication number: 20230024056
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. The thermoplastic resin composition includes a first propylene-ethylene copolymer, a second propylene-ethylene copolymer, a thermoplastic elastomer, an inorganic filler, and a sodium-phosphate-based nucleating agent as appropriate, and thus a molded article produced therefrom can exhibit improved mechanical rigidity, impact resistance, and dimensional stability. Even when formed to a low thickness for weight reduction, the molded article can be imparted with excellent processability, high tensile strength, a high flexural modulus, and high impact strength.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 26, 2023
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Seok Jin Yong, Hyung Tak Lee
  • Publication number: 20230016858
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a first polypropylene resin having crystallinity of 50% to 80%, a second polypropylene resin having a coefficient of linear thermal expansion of 70 ?m/m° C. to 90 ?m/m° C., an elastomer, and an inorganic filler.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 19, 2023
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Kwan Suk Ryu, Tae Kyung Lee