poly(styrene-co-α-methylstyrene)

polymer

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.

automotive interior trimelectronics enclosuresmedical device housingsconsumer appliance componentstransparent engineering partsmoderate-temperature rigid plastics

Compliance & Regulations

?UL 94?ITAR?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Glass Transition Temperature(Tg)	320.7	K	—

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Regulatory Screening

Environmental

Export Control

Safety & Biocompatibility

Quality & Standards

Industry-Specific

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.