ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,201, issued on Feb. 3, was assigned to BOREALIS GMBH (Vienna).
"Decoloration of polyolefins in the melt state" was invented by Kerstin Koller (Wels, Austria), Christoph Burgstaller (Wels, Austria), Hermann Braun (Linz, Austria), Peter Denifl (Linz, Austria) and Markus Gahleitner (Linz, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention concerns a process for decolorizing a polyolefin composition, the process comprising the steps of a) providing a polyolefin composition comprising at least one polyolefin and at least one organic chromophore, b) mixing the polyolefin composition in a melt state at a temperature of 170 to 290de...