Used primarily as a monomer in the synthesis of specialty polystyrene resins with enhanced thermal and oxidative stability. Its bulky tert-butyl group improves the polymer’s glass transition temperature and resistance to degradation, making it suitable for high-performance engineering plastics and elastomers. Commonly employed in the production of impact modifiers, adhesives, and compatibilizers for polymer blends. Also utilized in controlled radical polymerization techniques to create well-defined copolymers for advanced material applications.