Question: We are looking to formulate some acrylic adhesives, including ultraviolet (UV) adhesives. Should we be looking at acrylate or methacrylate monomers?
Answer: Historically, most adhesive and coatings formulators chose methacrylates over acrylates. Methacrylate polymers tend to have higher glass-transition (Tg) temperatures and less brittleness, and exhibit better weathering than their acrylate analogs. In addition, acrylates were perceived to have a poorer toxicity profile, particularly from a skin irritation or allergy point of view.