ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,221,545, issued on Feb. 11, was assigned to Stora Enso OYJ (Helsinki).
"Liquid lignin composition comprising lignin, water, alkali and urea" was invented by Ashar Zafar (Alta, Sweden), Jesper Ekstrom (Johanneshov, Sweden) and Dimitri Areskogh (Bromma, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a liquid lignin composition, particularly useful in the manufacture of resins for products such as insulation, laminates and engineered wood products such as oriented strand boards (OSB). The liquid lignin composition has a low viscosity even at low water content."
The patent was filed on July 2, 2018, under Application...