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BUTADIENE RUBBERS (BR)

The BR family of polybutadiene rubber helps optimize tire compositions, improving grip, fuel economy, and overall lifetime. They provide a great balance between processability and performance.

Buna® CB 22 Neodymium BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 63 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Cis 1,4 Content > 96 %
Density 0,91 g/cm3 ASTM D 297

EMULSION-STYRENE BUTADIENE RUBBERS (E-SBR)

E-SBR is predominantly used for the production of car tires, light truck tires and truck tire retread compounds. It presents good mechanical properties, abrasion, and tear resistance.

Buna® SE 1502 H Oil-free E-SBR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 53 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 23,5 wt % ASTM D 5775
Density 0,94 g/cm3 ASTM D 297

SOLUTION-STYRENE BUTADIENE RUBBERS (S-SBR)

The tire industry is the main market segment for S-SBR. S-SBR offers improved wet grip and reduced rolling resistance — which translate to greater safety and better fuel economy.

Buna® SL 4525-0 Standard S-SBR (Buna SL)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 45 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Styrene Content 25 wt % ASTM D 5775
Density 0,93 g/cm3 ASTM D 297