Triallylamine is primarily used as a crosslinking agent in polymer chemistry, especially in the production of specialty resins and coatings. Its three allyl groups enable multiple reaction sites, making it effective in enhancing the thermal and mechanical stability of polymers. It is commonly employed in the synthesis of ion-exchange resins and as a modifier in epoxy systems to improve curing properties. Additionally, it serves as an intermediate in the manufacture of quaternary ammonium compounds, which are used as biocides, surfactants, and antimicrobial agents. Due to its reactivity, it also finds use in radical polymerization processes and as a functional monomer in creating porous polymer networks for filtration and catalysis applications.