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:
May. 29, 2012
Filed:
May. 11, 2011
Mamdouh Ahmad Al-harthi, Dhahran, SA;
Abdul Kaleel Sulaiman Haniffa, Dhahran, SA;
Bijal Kottukkal Bahuleyan, Dhahran, SA;
Sadhan Kumar DE, Dhahran, SA;
Masihullah Jabarulla Khan, Dhahran, SA;
Mamdouh Ahmad Al-Harthi, Dhahran, SA;
Abdul Kaleel Sulaiman Haniffa, Dhahran, SA;
Bijal Kottukkal Bahuleyan, Dhahran, SA;
Sadhan Kumar De, Dhahran, SA;
Masihullah Jabarulla Khan, Dhahran, SA;
King Fahd University of Petroleum & Minerals, Dhahran, SA;
King Abdulaziz City for Science & Technology, Riyadh, SA;
Abstract
The method of promoting olefin polymerization uses a nanoparticle filler to increase the activity of a metallocene catalyst for in situ polymerization of polyolefins. The filler may be nanoparticles of manganese, or nanoparticles of manganese-doped titanium dioxide. The method includes the steps of (a) mixing a metallocene catalyst, e.g., zirconocene dichloride, with nanoparticles of the filler in an organic solvent, e.g., toluene, in a reactor to form a reaction mixture; (b) immersing the reactor in a temperature bath for a period of time sufficient to bring the mixture to an optimal polymerization reaction temperature; (c) adding monomer to the mixture in the reactor; (d) adding methylaluminoxane (MAO) as a co-catalyst to the reaction mixture to initiate polymerization; and (e) quenching the polymerization, e.g., by adding methanol containing 5% hydrochloric acid by volume to the reactor.