poly(styrene-co-butadiene)

polymer

Poly(styrene-co-butadiene), or SBR, is a synthetic rubber copolymer combining rigid polystyrene segments with flexible polybutadiene chains to balance stiffness and elasticity. It is widely used in tire manufacturing, adhesives, and impact-modified plastics where moderate resilience and cost-effectiveness are priorities. Engineers select SBR over pure polystyrene when impact resistance and flexibility are needed, and over natural rubber when consistent synthetic properties and lower cost are advantages.

tire treads and sidewallsimpact-modified polymersrubber adhesives and sealantsshoe soles and footwearasphalt modification

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)	233.2	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.