ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,778, issued on Aug. 19, was assigned to Borealis AG (Vienna).
"Ziegler-natta catalysts for olefin polymerization" was invented by Victor Sumerin (Porvoo, Finland) and Georgy Kipiani (Porvoo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to optionally substituted 1,3-dimethoxypropanes and 3-methoxypropylamines, and more particularly to their use as internal donors in Ziegler-Natta catalysts to obtain polymers with desirable properties. The present disclosure further concerns Ziegler-Natta catalyst components comprising said optionally substituted 1,3-dimethoxypropanes and 3-methoxypropylamines, and Ziegler-Natta...