Patents Assigned to SILKROAD C&T
  • Preparation method for admixture for plasterboard, admixture prepared thereby, and composition for forming plasterboard comprising same
    Patent number: 12454484
    Abstract: A method of preparing an admixture for a plasterboard is disclosed. An admixture prepared by the method and a composition for forming a plasterboard containing the admixture are also disclosed. The method includes sulfonation of polystyrene using sulfuric acid to give an admixture including a sulfonated polystyrene (SPS)-based compound of formula 1 below.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: October 28, 2025
    Assignee: SILKROAD C&T
    Inventors: Young Gil Ju, Dae Jin Kim, Min Jae Lee, Ju Hwan Kim, Cheol Yong Cha, Kwang Young Park
  • PREPARATION METHOD FOR ADMIXTURE FOR PLASTERBOARD, ADMIXTURE PREPARED THEREBY, AND COMPOSITION FOR FORMING PLASTERBOARD COMPRISING SAME
    Publication number: 20220227668
    Abstract: A method of preparing an admixture for a plasterboard is disclosed. An admixture prepared by the method and a composition for forming a plasterboard containing the admixture are also disclosed. The method includes sulfonation of polystyrene using sulfuric acid to give an admixture including a sulfonated polystyrene (SPS)-based compound of formula 1 below.
    Type: Application
    Filed: May 11, 2020
    Publication date: July 21, 2022
    Applicant: SILKROAD C&T
    Inventors: Young Gil JU, Dae Jin KIM, Min Jae LEE, Ju Hwan KIM, Cheol Yong CHA, Kwang Young PARK