Pigmented, uv-cured, acrylic-based, pressure sensitive adhesives, and method for making same

Abstract From the Canadian patent

Pressure sensitive adhesives that cure to a high cohesive strength at room and elevated temperatures, and a method for making such adhesives are provided. , The adhesives comprise an acrylic copolymer compounded with a pigment and a hydrogen-abstracting photoinitiator. A tackifier and/or multifunctional acrylate or methacrylate can also be added. The acrylic copolymer is prepared from a substantially acid-free monomer mixture of at least one alkyl acrylate and a tertiary amine-containing monomer such as DMAPMA. Other monomers, including polar vinylic monomers and diesters of ethylenically unsaturated dicarboxylic acids are, preferably, also included. Despite the presence of titanium …