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:
Aug. 16, 2011
Filed:
Aug. 16, 2004
Alexander W. Degroot, Lake Jackson, TX (US);
James C. Stevens, Richmond, TX (US);
Sylvie Y. Desjardins, Lake Jackson, TX (US);
Jeffrey Weinhold, Lake Jackson, TX (US);
Edmund Carnahan, Fresno, TX (US);
David Gillespie, Pearland, TX (US);
Daniel D. Vanderlende, Sugar Land, TX (US);
Alexander W. DeGroot, Lake Jackson, TX (US);
James C. Stevens, Richmond, TX (US);
Sylvie Y. Desjardins, Lake Jackson, TX (US);
Jeffrey Weinhold, Lake Jackson, TX (US);
Edmund Carnahan, Fresno, TX (US);
David Gillespie, Pearland, TX (US);
Daniel D. VanderLende, Sugar Land, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A process of making a polymer is described. The process includes contacting one or more olefinic monomers in the presence of at least a high molecular weight (HMW) catalyst and at least a low molecular weight (LMW) catalyst in a polymerization reactor system; and effectuating the polymerization of the one or more olefinic monomers in the polymerization reactor system to obtain an olefin polymer, wherein the LMW catalyst has an R, defined as wherein [vinyl] is the concentration of vinyl groups in the olefin polymer produced by the low molecular weight catalyst expressed in vinyls/1,000 carbon atoms; [vinylidene], [cis] and [trans] are the concentration of vinylidene, cis and trans groups in the olefin polymer expressed in the number of the respective groups per 1,000 carbon atoms, of greater than 0.12, and wherein the HMW catalyst has a reactivity ratio, r1 of about 5 or less.