3M Patents Color Change Cyanoacrylate Adhesives

July 19, 2013

U.S. 8,217,110 B2
3M Innovative Properties Company has been granted a patent for a cyanoacrylate-based adhesive composition comprised of a cyanoacrylate monomer; and a bleachable dye comprised of Michler’s hydrol cation, or derivatized Michler’s hydrol cation, paired with a non-nucleophilic anion that provides a stable color to the cyanoacrylate-based adhesive.