ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,345, issued on Sept. 23, was assigned to BOSTIK SA (Colombes, France).
"Polyimines and uses thereof" was invented by Stephane Fouquay (Venette, France) and Federico Sanz (Venette, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a moisture-crosslinkable sealant composition comprising: at least one polyurethane P comprising at least two NCO end functions; at least one polyimine A obtained via a process comprising a step of reaction between at least: a) a (poly)urethane-aldehyde comprising at least 2 aldehyde functions; b) a primary diamine; c) optionally in the presence of a primary monoamine or a monoaldehyde i...