Styrene-butadiene

Styrene-butadiene (CAS 9003-55-8), commercially known as styrene-butadiene rubber (SBR), is a synthetic copolymer used in rubber and polymer manufacturing.

Where is Styrene-butadiene used?

• Tire manufacturing: dominant tread compound material, wear performance comparable to natural rubber at lower cost
• Building and construction: flooring adhesives, waterproofing membranes, asphalt modification improving flexibility
• Printing and packaging: latex binder in paper coatings and carpet backing
• Automotive seals, gaskets and conveyor belting rely on SBR compounds for durable, cost-effective elastomeric performance.

Good to know: Food-contact and indirect-contact grades are recognized under E1585.

Commercial specifications

• Standard grades differentiated by styrene-to-butadiene ratio and Mooney viscosity
• Dry bales, crumb rubber, aqueous latex dispersions