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:
Feb. 25, 2014
Filed:
Jun. 09, 2011
Mattijs Van Der Ham, Amsterdam, NL;
Pierre Sere Peyrigain, Haguenau, FR;
William D. Stephens, Batavia, IL (US);
Mattijs van der Ham, Amsterdam, NL;
Pierre Sere Peyrigain, Haguenau, FR;
William D. Stephens, Batavia, IL (US);
Ineos USA LLC, Lisle, IL (US);
Abstract
An olefin polymerization process comprises gas-phase polymerization of at least one olefin monomer in more than one polymerization zones in one or more polymerization reactors using a high activity catalyst injected in the front end of the reactor to give solid polymer particles. According to the process of the invention, different hydrogen to olefin ratios are controlled and applied to the reactor leading to the production of very different molecular weights and therefore broadening the molecular weight distribution of the polymer produced.