US Patent Issued to ExxonMobil Chemical Patents on April 21 for "Isotactic propylene homopolymers and copolymers produced with C1 symmetric metallocene catalysts" (Texas Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,657, issued on April 21, was assigned to ExxonMobil Chemical Patents Inc. (Baytown, Texas).

"Isotactic propylene homopolymers and copolymers produced with C1 symmetric metallocene catalysts" was invented by Nikola S. Lambic (Houston), Tzu-Pin Lin (Seabrook, Texas), Lubin Luo (Houston), Maksim Shivokhin (Houston), Laughlin G. McCullough (League City, Texas) and Carlos R. Lopez-Barron (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides catalyst compounds comprising asymmetric bridged metallocenes containing a ligand having at least one saturated ring, catalyst systems including such compounds, and uses thereof. Cat...