ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,445, issued on March 17, was assigned to Covestro Deutschland AG (Leverkusen, Germany).
"Dispersion adhesives" was invented by Harald Kraus (Leverkusen, Germany), Robert Liberati (Hurth-Efferen, Germany), Peter Kueker (Leverkusen, Germany) and Martin Melchiors (Leichlingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to formulations of aqueous dispersion adhesives based on aqueous polyurethane or polyurethane-urea dispersions, and to the use of the adhesive formulations for the adhesive bonding of foam substrates by the spray coagulation process. The dispersion comprises as disperse phase at least one polymer which ...