ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,005, issued on July 15, was assigned to Borealis AG (Vienna).
"Ziegler-Natta catalysts for olefin polymerization" was invented by Georgy Kipiani (Porvoo, Finland) and Marja Mustonen (Porvoo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to substituted 2-iso-propyl-1,3-dialkoxypropanes, and more particularly to their use as internal donors in Ziegler-Natta catalysts to obtain ethylene (co)polymers with desirable properties. The present disclosure further concerns use of Ziegler-Natta catalyst components comprising said substituted 2-iso-propyl-1,3-dimethoxypropanes and use of Ziegler-Natta catalysts in ethylene ...