ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,244, issued on April 22, was assigned to Henkel AG & Co. KGaA (Duesseldorf, Germany).
"Bio-based reactive polyurethane hotmelt adhesives" was invented by James Ward (Duesseldorf, Germany), Christian Holtgrewe (Duesseldorf, Germany), Timo Pasemann (Oberhausen, Germany) and Anja Cosima Lindhorst (Duesseldorf, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a moisture curable hotmelt adhesive composition comprising at least one polyurethane prepolymer obtained from the reaction of a) at least one polyether; b) at least one (meth)acrylic resin; c) at least one crystalline polyester; d) at least one amorphous polyes...