This week's featured invention patented by Minnesota inventors is within CPC Section C: Chemistry & Metallurgy.
Inventor(s): Hannah Vu, New Brighton; Hideyo Sugimura, North Oaks; Ping Fan, Ramsey; Hao Vu, New Brighton
Assignee(s): Insight Equity A.P.X., L.P., Ramsey
Abstract: A photochromic polyurethane laminate wherein the photochromic polyurethane layer of the laminate has been crosslinked with a isocyanate-active prepolymer using a crosslinking agent. The crosslinking agent is formulated to have at least three functional groups that are reactive with functional groups of the polyurethane or of the isocyanate-active prepolymer. A method of making the photochromic polyurethane laminate includes steps of causing the crosslinking.