ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,872, issued on Oct. 14, was assigned to NOVA Chemicals (International) S.A. (Fribourg, Switzerland).
"Rotomolding composition" was invented by Carmine D'Agostino (Mississauga, Canada), Gilbert Arnould (Calgary, Canada), Celine Bellehumeur (Calgary, Canada), Henry Hay (Calgary, Canada) and Van Dang (Calgary, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotomolding composition comprises a blend of two polyethylenes: 1) a well stabilized polyethylene; and 2) a poorly stabilized polyethylene having a very low flow rate. The poorly stabilized polyethylene is further characterized by having a large particle size (from 500 to 3000 microns). Roto...