US Patent Issued to Stratasys on July 7 for "Dual cure 3D printing resins" (Pennsylvania Inventor)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,015, issued on July 7, was assigned to Stratasys Inc. (Minnetonka, Minn.).

"Dual cure 3D printing resins" was invented by Liang Chen (Sewickley, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a composition comprising: A) an aliphatic polyurethane which comprises a reaction product of a first aliphatic polyisocyanate, a first polyol, and a thiol, optionally in the presence of a catalyst, and B) a urethane (meth)acrylate prepolymer, optionally a reactive diluent, and a photoinitiator, wherein the urethane (meth)acrylate prepolymer comprises a reaction product of a second aliphatic polyisocyanate, a second polyol and an acrylate, wherein...