ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,219, issued on Aug. 26, was assigned to Borealis AG (Vienna).
"Catalyst and preparation thereof" was invented by Frank Schroder (Linz, Austria), Timo Leinonen (Tolkkinen, Finland), Peter Denifl (Linz, Austria), Sascha Kaltenbacher (Linz, Austria) and Bernhard Hagemann (Linz, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for producing a solid Ziegler-Natta catalyst component in the form of solid particles having a median particle size (D50vol) of 5 to 500 micro metre and the process comprising steps I. providing a solution of a Group 2 metal dihalide (IUPAC, Nomenclature of Inorganic Chemistry, 2005...