ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,299, issued on June 24, was assigned to Borealis AG (Vienna).
"Long-chain branched propylene polymer composition" was invented by Jingbo Wang (Linz, Austria), Markus Gahleitner (Linz, Austria), Klaus Bernreitner (Linz, Austria), Katja Ellen Klimke (Linz, Austria) and Friedrich Berger (Linz, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a process for producing a propylene polymer composition, which includes (a) polymerizing propylene in the presence of a polymerization catalyst to produce a propylene polymer; (b) recovering the propylene polymer, wherein the recovered propylene polymer has a xylene cold solubles (XCS) fraction i...