ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,423, issued on July 28, was assigned to Covestro Deutschland AG (Leverkusen, Germany).
"Hybrid solvent-borne polyurethane adhesives" was invented by Ann-Christin Bijlard-Jung (Rosrath, Germany), Dirk Achten (Leverkusen, Germany), Fabian Schuster (Leverkusen, Germany) and Joerg Tillack (Solingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An adhesive composition includes a polyurethane polymer, a solvent and a co-solvent. The polyurethane polymer is an internally and/or externally hydrophilized thermoplastic polyurethane having a mass average molecular weight Mw, as determined by gel permeation chromatography against polystyrene standards...