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:
Mar. 26, 2024
Filed:
May. 29, 2019
Dow Global Technologies Llc, Midland, MI (US);
Linfeng Chen, Missouri City, TX (US);
Mingzhe Yu, Midland, MI (US);
Mehmet Demirors, Pearland, TX (US);
Andrew T. Heitsch, Angleton, TX (US);
Jeffrey A. Sims, Lake Jackson, TX (US);
David Gordon Barton, Midland, MI (US);
Kurt F. Hirsekorn, Sugar Land, TX (US);
Peter N. Nickias, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A heterogeneous procatalyst includes a preformed heterogeneous procatalyst and a metal-ligand complex. The preformed heterogeneous procatalyst includes a titanium species and a magnesium chloride (MgCl) support. The metal-ligand complex has a structural formula (L)M(Y)(XR), where M is a metal cation; each L is a neutral ligand or (═O); each Y is a halide or (C-C)alkyl; each XRis an anionic ligand in which X is a heteroatom or a heteroatom-containing functional group and Ris (C-C)hydrocarbyl or (C-C) heterohydrocarbyl; n is 0, 1, or 2; m is 0-4; and b is 1-6. The metal-ligand complex is overall charge neutral. The heterogeneous procatalyst exhibits improved average molecular weight capability. A catalyst system includes the heterogeneous procatalyst and a cocatalyst. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.