Used in polymer chemistry as a monomer for synthesizing functional polystyrene-type resins with carboxylic acid groups. These resins are valuable in ion-exchange applications, catalysis, and as intermediates in solid-phase synthesis. Also employed in modifying surface properties of polymers due to the reactivity of both the vinyl and carboxylic acid functionalities. Finds use in crosslinking agents for coatings and adhesives where thermal or UV curing is required. Additionally, serves as a building block in organic synthesis for pharmaceuticals and agrochemicals where aromatic and acrylic components are needed.