Patents by Inventor Byoung Gak Kim

Byoung Gak 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).

  • Patent number: 10927237
    Abstract: The present invention relates to a compound having a bis phenylene group substituted with alkylamide, a composition comprising the same for the control of polyphenylene polymer flowability and a method for controlling polyphenylene polymer flowability using the same. The said compound can improve the flowability of polyphenylene polymer so that it can be used for processing polyphenylene polymer to improve the flowability, thereby providing economic benefits by diversifying PPS parts and improving workability. In addition, the said compound can control and improve the flowability by regulating the length of phenyl-conjugated alkyl, so that it can be effectively used as a flowability regulator of polyphenylene polymer particularly polyphenylene sulfide.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: February 23, 2021
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Byoung Gak Kim, Yong Seok Kim, Young Jae Yoo, Dong Gyun Kim, Seong Wook Lee, Jun Woo Jeon, Bo Mi Maeng
  • Publication number: 20190218368
    Abstract: The present invention relates to a compound having a bis phenylene group substituted with alkylamide, a composition comprising the same for the control of polyphenylene polymer flowability and a method for controlling polyphenylene polymer flowability using the same. The said compound can improve the flowability of polyphenylene polymer so that it can be used for processing polyphenylene polymer to improve the flowability, thereby providing economic benefits by diversifying PPS parts and improving workability. In addition, the said compound can control and improve the flowability by regulating the length of phenyl-conjugated alkyl, so that it can be effectively used as a flowability regulator of polyphenylene polymer particularly polyphenylene sulfide.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 18, 2019
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Byoung Gak Kim, Yong Seok Kim, Young Jae Yoo, Dong Gyun Kim, Seong Wook Lee, Jun Woo Jeon, Bo Mi Maeng
  • Patent number: 10100161
    Abstract: The present disclosure relates to a polyamide-based polymer composition with superior fluidity and a polyamide-based composite material with superior mechanical strength prepared therefrom. More specifically, it relates to a polyamide-based polymer composition containing 0.1-5 parts by weight of dicyclohexylmethane bisdecanoamide, which is a cyclic compound, as a fluidity control agent based on 100 parts by weight of a mixture consisting of 20-90 wt % of a polyamide-based resin and 10-80 wt % of a reinforcing fiber, a polyamide-based composite material prepared using the same, and a method for preparing the same. The polymer composition according to the present disclosure, wherein dicyclohexylmethane bisdecanoamide is used as a fluidity control agent, provides an effect of reducing friction between a molten resin and a processing machine and greatly reducing torque by effectively dispersing a reinforcing fiber in a polyamide-based resin.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 16, 2018
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Youngjae Yoo, Hwan Seok Choi, Yong Seok Kim, Byoung Gak Kim, Dong-Gyun Kim, Sung-Goo Lee, Dohyun Im
  • Publication number: 20180030220
    Abstract: The present disclosure relates to a polyamide-based polymer composition with superior fluidity and a polyamide-based composite material with superior mechanical strength prepared therefrom. More specifically, it relates to a polyamide-based polymer composition containing 0.1-5 parts by weight of dicyclohexylmethane bisdecanoamide, which is a cyclic compound, as a fluidity control agent based on 100 parts by weight of a mixture consisting of 20-90 wt % of a polyamide-based resin and 10-80 wt % of a reinforcing fiber, a polyamide-based composite material prepared using the same, and a method for preparing the same. The polymer composition according to the present disclosure, wherein dicyclohexylmethane bisdecanoamide is used as a fluidity control agent, provides an effect of reducing friction between a molten resin and a processing machine and greatly reducing torque by effectively dispersing a reinforcing fiber in a polyamide-based resin.
    Type: Application
    Filed: July 25, 2017
    Publication date: February 1, 2018
    Inventors: Youngjae YOO, Hwan Seok Choi, Yong Seok Kim, Byoung Gak Kim, Dong-Gyun Kim, Sung-Goo Lee, Dohyun Im
  • Patent number: 9691520
    Abstract: The present invention relates to a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite comprising the same, and more specifically, a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite including the same, wherein when forming a polymer coating layer on surfaces of particles that are not subjected to separate surface treatment, excessive polymers uncoated on nanoparticles are easily removed by adding to an ionic liquid or an apolar solvent so that the polymer coating layer is formed with a nanometer-scale uniform thickness and a dense coating density, thereby showing excellent dispersibility in a polymer matrix.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: June 27, 2017
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Byoung Gak Kim, Jong Chan Won, Yong Seok Kim, No Kyun Park, Jin Young Park
  • Publication number: 20150073101
    Abstract: The present invention relates to a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite comprising the same, and more specifically, a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite including the same, wherein when forming a polymer coating layer on surfaces of particles that are not subjected to separate surface treatment, excessive polymers uncoated on nanoparticles are easily removed by adding to an ionic liquid or an apolar solvent so that the polymer coating layer is formed with a nanometer-scale uniform thickness and a dense coating density, thereby showing excellent dispersibility in a polymer matrix.
    Type: Application
    Filed: April 3, 2013
    Publication date: March 12, 2015
    Inventors: Byoung Gak Kim, Jong Chan Won, Yong Seok Kim, No Kyun Park, Jin Young Park
  • Publication number: 20120115050
    Abstract: Disclosed is a method for in-situ preparation of a polybenzimidazole-based electrolyte membrane, including: polymerizing a polybenzimidazole polymer in a solution; casting a solution containing the polymerized polymer onto a substrate and drying the solution in air to form a membrane; washing the dried membrane with water or alcohol; and allowing water or alcohol to evaporate from the membrane containing water or alcohol, while maintaining the shape of the membrane. The method for in-situ preparation of a polybenzimidazole-based electrolyte membrane allows easy preparation of a polybenzimidazole-based electrolyte membrane having a desired area without any complicated processes, and thus contributes to simplification of an overall process for fabricating a fuel cell.
    Type: Application
    Filed: September 22, 2011
    Publication date: May 10, 2012
    Applicant: Korea Institute of Science & Technology
    Inventors: Hyoung-Juhn Kim, Byoung Gak Kim, Hye Jin Lee, Jong Hyun Jang, Eun Ae Cho, Jong Hee Han, Suk Woo Nam, Seong Ahn Hong, Tae Hoon Lim