4-tert-butoxystyrene is a pendant functionalized styrene that structurally, It is similar to PMOS, both carrying an alkoxyl p-substituent, whose electron-donating and resonance effects allow them to be'polymerized by cationic, anionic, and radical mechanisms. It is used to treatment of its polymers with an acid leads to poly(4-vinylphenol), which finds a wide variety of applications to photoresists, epoxy-curing agents, adhesives, etc.).
