Patents by Inventor Chang Sull Kim

Chang Sull Kim 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: 20190185606
    Abstract: The present invention relates to an ABS graft copolymer, a method of preparing the same, and a thermoplastic resin composition including the same. More specifically, when an ABS graft copolymer is prepared using emulsion polymerization, a phosphate ester-based reactive emulsifier capable of acting as a metal deactivator is added, thereby reducing the amount of undesired residues remaining in the ABS graft copolymer latex. As a result, thermal stability may be improved without adding a heat stabilizer. In addition, compatibility between the ABS graft copolymer and the aromatic vinyl compound-vinyl cyanide compound copolymer may be improved by the phosphate ester-based reactive emulsifier. Therefore, a final molded part having improved impact resistance, e.g., increased impact strength, and having improved appearance quality, e.g., excellent whiteness, while having excellent thermal stability may be prepared.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 20, 2019
    Inventors: Yu Sung JUNG, Joo Byung CHAI, Jong Beom KIM, Chang Sull KIM, Eun Seon PARK, Tae Young JEON, Young Min KIM
  • Publication number: 20190177522
    Abstract: The present invention relates to a method of preparing a thermoplastic resin, a method of preparing a thermoplastic resin composition including the same, and a method of manufacturing an injection-molded article using the thermoplastic resin composition. By using a mixture of molecular weight modifiers having different reactivities according to the present invention, coagulation may be performed using a small amount of coagulant, productivity may be increased, and a molded article, which is manufactured using a thermoplastic resin, having excellent appearance characteristics along with superior mechanical strength, processability, or the like may be provided.
    Type: Application
    Filed: November 15, 2017
    Publication date: June 13, 2019
    Inventors: Jong Beom KIM, Joo Byung CHAI, Yu Sung JUNG, Chang Sull KIM, Eun Seon PARK, Tae Young JEON, Young Min KIM
  • Patent number: 10266627
    Abstract: The present disclosure relates to a method of preparing a heat-resistant SAN resin. More particularly, the present disclosure provides a method of preparing a heat-resistant SAN resin enabling provision of superior productivity and improved heat resistance and fluidity without generation of odor during processing, and a heat-resistant SAN resin composition prepared by the method.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 23, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Joo Byung Chai, Yu Sung Jung, Jong Beom Kim, Chang Sull Kim, Young Min Kim, Eun Seon Park, Tae Young Jeon
  • Publication number: 20180118864
    Abstract: The present disclosure relates to a method of preparing a heat-resistant SAN resin. More particularly, the present disclosure provides a method of preparing a heat-resistant SAN resin enabling provision of superior productivity and improved heat resistance and fluidity without generation of odor during processing, and a heat-resistant SAN resin composition prepared by the method.
    Type: Application
    Filed: November 29, 2016
    Publication date: May 3, 2018
    Inventors: Joo Byung CHAI, Yu Sung JUNG, Jong Beom KIM, Chang Sull KIM, Young Min KIM, Eun Seon PARK, Tae Young JEON
  • Publication number: 20180030191
    Abstract: The present invention relates to a thermoplastic resin, a method of preparing the thermoplastic resin, and a thermoplastic resin composition including the thermoplastic resin. More particularly, the present invention relates to a thermoplastic resin characterized by maximizing a ratio of monomers grafted to rubber particles and a graft rate so as to maintain a rubber particle shape in a high shear environment and varying the composition of each of monomers grafted to the inside and outside of rubber particles, a method of preparing the thermoplastic resin, and a thermoplastic resin composition having superior impact strength, falling dart impact strength, heat deflection temperature, chemical resistance, and plating adhesion strength due to inclusion of the thermoplastic resin.
    Type: Application
    Filed: November 22, 2016
    Publication date: February 1, 2018
    Inventors: Joo Byung CHAI, Yu Sung JUNG, Eun Seon PARK, Tae Young JEON, Young Min KIM, Jong Beom KIM, Chang Sull KIM
  • Patent number: 9845370
    Abstract: The present invention relates to a method of preparing a heat-resistant resin, a heat-resistant resin, and a heat-resistant ABS resin. According to the preparation method of the present invention, the heat-resistant resin can be prepared at a high polymerization conversion rate within a shortened polymerization time, and the amount of polymerized coagulum and the content of fine particles upon coagulation are decreased. Accordingly, a heat-resistant resin and a heat-resistant ABS resin composition with enhanced heat deflection temperature and processability are provided.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: December 19, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Joo Byung Chai, Eun Seon Park, Tae Young Jeon, Young Min Kim, Jong Beom Kim, Chang Sull Kim, Yu Sung Jung
  • Publication number: 20160347937
    Abstract: The present invention relates to a heat-resistant resin and a method of preparing the same. More particularly, the present invention relates to a heat-resistant resin including 100 parts by weight of a styrene based resin and 0.5 to 5 parts by weight of silica having a contact angle of 10 to 60° and an average particle diameter of 0.1 nm or more and 100 nm or less, a method of preparing the same and a heat-resistant resin composition including the same. In accordance with the present invention, provided are a heat-resistant resin having a low moisture content and a small content of fine particles while having heat resistance equal to or higher than conventional resins and, accordingly superior cohesion, a method of preparing the same, and a heat-resistant resin composition including the same.
    Type: Application
    Filed: December 4, 2015
    Publication date: December 1, 2016
    Applicant: LG CHEM, Ltd.
    Inventors: Chang Sull KIM, Joo Byung CHAI, Tae Young JEON, Young Min KIM, Yu Sung JUNG, Jong Beom KIM, Eun Seon PARK
  • Patent number: 9504972
    Abstract: Disclosed are an apparatus for preparing a polymer latex resin powder in which an efficiency of mixing of steam, a latex, and a coagulant is increased by introducing a non-continuous screw into a reactor that performs coagulation and aging and thus a moisture content of a slurry is decreased and, accordingly, drying efficiency may be enhanced, and a polymer latex resin powder with excellent color and powder characteristics may be prepared using a decreased amount of coagulant and a method of preparing a polymer latex resin powder by using the same.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: November 29, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Chang Sull Kim, Min Cheol Ju, Hyung Sub Lee, Hoi In Jeong
  • Publication number: 20160297909
    Abstract: The present invention relates to a method of preparing a heat-resistant resin, a heat-resistant resin, and a heat-resistant ABS resin. According to the preparation method of the present invention, the heat-resistant resin can be prepared at a high polymerization conversion rate within a shortened polymerization time, and the amount of polymerized coagulum and the content of fine particles upon coagulation are decreased. Accordingly, a heat-resistant resin and a heat-resistant ABS resin composition with enhanced heat deflection temperature and processability are provided.
    Type: Application
    Filed: October 6, 2015
    Publication date: October 13, 2016
    Inventors: Joo Byung CHAI, Eun Seon PARK, Tae Young JEON, Young Min KIM, Jong Beom KIM, Chang Sull KIM, Yu Sung JUNG
  • Publication number: 20150322255
    Abstract: Disclosed are an apparatus for preparing a polymer latex resin powder in which an efficiency of mixing of steam, a latex, and a coagulant is increased by introducing a non-continuous screw into a reactor that performs coagulation and aging and thus a moisture content of a slurry is decreased and, accordingly, drying efficiency may be enhanced, and a polymer latex resin powder with excellent color and powder characteristics may be prepared using a decreased amount of coagulant and a method of preparing a polymer latex resin powder by using the same.
    Type: Application
    Filed: December 24, 2013
    Publication date: November 12, 2015
    Inventors: Chang Sull Kim, Min Cheol Ju, Hyung Sub Lee, Hoi In Jeong