The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2015
Filed:
Apr. 01, 2014
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Mamdouh Ahmad Al-Harthi, Dhahran, SA;
Omer Yahya Bakather, Dhahran, SA;
Sadhan Kumar De, Dhahran, SA;
Reyad Awwad Khalaf Shawabkeh, Dhahran, SA;
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;
Abstract
The method to produce ultra-high-molecular-weight polyethylene (UHMWPE) incorporates tungsten-doped titania (TiO/W) nanofiller during the ethylene polymerization process. The UHMWPE possesses improved mechanical and thermal properties. The process for producing the UHMWPE includes contacting ethylene under polymerization conditions with a polymerization catalyst (a vanadium (III) complex bearing bidentate salicylaldiminato ligands) in the presence of TiO/W nanofiller and a co-catalyst in a reactor. The reactor is charged with solvent (e.g., toluene) and heated to a temperature suitable for polymerization, e.g., about 30° C. Following heating, the ethylene monomer is fed into the reactor and allowed to saturate for at least 10 minutes, and a methyl aluminum dichloride co-catalyst (MADC) is added to initiate polymerization of ethylene. Polymerization is quenched by adding methanol containing HCl incorporated with titania-tungsten nanofillers, which is then washed and dried to yield UHMWPE.