Used primarily as a reactive diluent in unsaturated polyester resins, improving resin processability and reducing viscosity without compromising curing performance. Enhances the mechanical strength and thermal stability of coatings and adhesives. Employed in the production of specialty polymers and copolymers where higher reactivity and improved hydrophobicity are required. Also utilized in resin systems for composites, castings, and fiberglass-reinforced plastics due to its good air-inhibition resistance and low volatility compared to styrene.