ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,546, issued on Dec. 23, was assigned to Urethane Systems USA LLC (Perth Amboy, N.J.).

"Curable polyurethane prepolymer composition" was invented by Thomas Peter (Southbury, Conn.), Ian Laskowitz (Bantam, Conn.), Margarita Ortiz (Plainville, Conn.) and George Brereton (Mahopac, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates generally to a curable polyurethane prepolymer composition comprising polyurethane prepolymer obtained by the reaction of toluene diisocyanate (TDI) and at least one polyol and an ortho alkyl disubstituted dianiline, preferably 4,4'-methylene-bis-(3-chloro-2,6-diethylaniline) (MCDEA), wherein 50 ...