poly(styrene-co-α-methylstyrene)

Poly(styrene-co-α-methylstyrene) is a random copolymer combining styrene and α-methylstyrene monomers, producing a stiffer and higher-temperature polymer than homopolystyrene while maintaining good transparency and processability. This material is used in applications requiring improved thermal stability and rigidity, including automotive components, consumer electronics housings, and medical device casings where modest temperature resistance and dimensional stability are priorities. The α-methylstyrene comonomer acts as a reinforcing unit that elevates the material's glass transition temperature compared to standard polystyrene, making it an attractive alternative when slightly better heat performance is needed without resorting to more expensive engineering plastics.