Patents by Inventor Onteera Yenjitrattanawalee

Onteera Yenjitrattanawalee 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).

  • High activity olefin polymerization catalyst compromising boron-containing silica support and the preparation thereof
    Patent number: 9096696
    Abstract: The present invention relates to a high activity olefin polymerization catalyst comprising a boron-containing silica support and the preparation thereof. This invention is characterized in that the support is heat treated in combination with a chemical treatment using a boron compound. The boron compound used in the chemical treatment of this invention is boron halide, preferably boron trichloride. The catalyst of this invention has the weight of boron comparing with the support is 0.5 to 0.7% and has the weight of the boron relative to the catalyst of 0.1 to 0.5%. The catalyst of this invention has chemical compositions comprising:—Boron 0.1-0.5% wt;—Titanium 4-6% wt;—Magnesium 2-6% wt;—Chloride 15-25% wt.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 4, 2015
    Assignee: PTT Global Chemical Public Company Limited
    Inventors: Sutheerawat Samingprai, Onteera Yenjitrattanawalee, Chaya Chandavasu
  • HIGH ACTIVITY OLEFIN POLYMERIZATION CATALYST COMPRISING BORON-CONTAINING SILICA SUPPORT AND THE PREPARATION THEREOF
    Publication number: 20140213438
    Abstract: The present invention relates to a high activity olefin polymerization catalyst comprising a boron-containing silica support and the preparation thereof. This invention is characterized in that the support is heat treated in combination with a chemical treatment using a boron compound. The boron compound used in the chemical treatment of this invention is boron halide, preferably boron trichloride. The catalyst of this invention has the weight of boron comparing with the support is 0.5 to 0.7% and has the weight of the boron relative to the catalyst of 0.1 to 0.5%. The catalyst of this invention has chemical compositions comprising:—Boron 0.1-0.5% wt;—Titanium 4-6% wt;—Magnesium 2-6% wt;—Chloride 15-25% wt.
    Type: Application
    Filed: September 5, 2012
    Publication date: July 31, 2014
    Applicant: PTT Global Chemical Public Company Limited
    Inventors: Sutheerawat Samingprai, Onteera Yenjitrattanawalee, Chaya Chandavasu