ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,439, issued on Dec. 2, was assigned to DIC Corp. (Tokyo).
"Urethane resin composition, adhesive, and synthetic leather" was invented by Yayi Tseng (Osaka, Japan) and Ryo Maeda (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A urethane resin composition including water, the urethane resin composition being produced using a biomass raw material and having high oleic-acid resistance, excellent low-temperature flexibility, and high peel strength. A urethane resin composition including an anionic urethane resin (X) and water (Y), in which the anionic urethane resin (X) is produced using a polyol (a) including a biomass-derived polycarbonate p...