Patents by Inventor SIRIPON ANANTAWARASKUL

SIRIPON ANANTAWARASKUL 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).

  • Supported metallocene catalyst for olefin polymerization
    Patent number: 9834630
    Abstract: The supported metallocene catalyst for olefin polymerization is (nBuCp)2ZrCl2 impregnated onto a silica support having MAO tethered thereon. The catalyst is made by dehydroxylating silica, adding MAO dropwise to a slurry of the silica in toluene, heating the mixture for several hours, reacting (nBuCp)2ZrCl2 in toluene solvent with the MAO/silica support, and drying the catalyst under vacuum. The catalyst may be used, e.g., to catalyze copolymerization of ethylene with 1-hexene.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: December 5, 2017
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Muhammad Atiqullah, Mamdouh A. Al-Harthi, Siripon Anantawaraskul, Abdul-Hamid M. Emwas, Anwar Ul-Hamid, Anwar Hossaen
  • SUPPORTED METALLOCENE CATALYST FOR OLEFIN POLYMERIZATION
    Publication number: 20150353658
    Abstract: The supported metallocene catalyst for olefin polymerization is (nBuCp)2ZrCl2 impregnated onto a silica support having nBuSnCl3 and MAO tethered thereon. The catalyst is made by dehydroxylating silica, forming a silica/toluene slurry, injecting nBuSnCl3 into the slurry, refluxing the silica/toluene/nBuSnCl3 slurry, adding MAO dropwise to a slurry of the nBuSnCl3-functionalized silica in toluene, heating the mixture for several hours, reacting (nBuCp)2ZrCl2 in toluene solvent with the MAO/nBuSnCl3-functionalized silica support, and drying the catalyst under vacuum. The catalyst may be used, e.g., to catalyze copolymerization of ethylene with 1-hexene.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 10, 2015
    Inventors: MUHAMMAD ATIQULLAH, MAMDOUH A. AL-HARTHI, ABDUL-HAMID M. EMWAS, SIRIPON ANANTAWARASKUL, ANWAR UL-HAMID, ANWAR HOSSAEN
  • SUPPORTED METALLOCENE CATALYST FOR OLEFIN POLYMERIZATION
    Publication number: 20150353659
    Abstract: The supported metallocene catalyst for olefin polymerization is (nBuCp)2ZrCl2 impregnated onto a silica support having MAO tethered thereon. The catalyst is made by dehydroxylating silica, adding MAO dropwise to a slurry of the silica in toluene, heating the mixture for several hours, reacting (nBuCp)2ZrCl2 in toluene solvent with the MAO/silica support, and drying the catalyst under vacuum. The catalyst may be used, e.g., to catalyze copolymerization of ethylene with 1-hexene.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 10, 2015
    Inventors: MUHAMMAD ATIQULLAH, MAMDOUH A. AL-HARTHI, SIRIPON ANANTAWARASKUL, ABDUL-HAMID M. EMWAS, ANWAR UL-HAMID, ANWAR HOSSAEN