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Butadiene Rubber

The BR polymer family contains polybutadiene rubbers which are divided into different categories according to their polymerization process and application field.

Cobalt BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 53 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Cis 1,4 Content > 96 %
Cobalt BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 40 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Cis 1,4 Content > 96 %
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 %
Neodymium BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 37 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Oil Content 27,3 wt % ISO 1407
Cis 1,4 Content > 96 %
Lithium BR, Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 38 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 90 mPa.s Internal Method
Cis 1,4 Content 38 %
Color < 5,0 Internal Method
Lithium BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 45 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Cis 1,4 Content 38 %
Lithium BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 68 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 250 mPa.s Internal Method
Cis 1,4 Content 38 %
Color < 4,5 Internal Method
Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 68 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 250 mPa.s Internal Method
Cis 1,4 Content 38 %
Color < 4,5 Internal Method
Lithium BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 54 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 165 mPa.s Internal Method
Cis 1,4 Content 36 % Internal Method
Trans 1,4 Content 53 wt % Internal Method
Vinyl Content 11 wt % Internal Method
Color < 7,5 Internal Method
Lithium BR, Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 53 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 165 mPa.s Internal Method
Cis 1,4 Content 36 %
Color < 7,5 Internal Method

Emulsion Styrene Butadiene Rubber

The Buna® SE product group comprises the general purpose emulsion styrene-butadiene rubbers (E-SBR) which is one of the most important types of synthetic rubber. Emulsion Styrene Butadiene Rubber is the most widely used rubber in the world, representing about 40% of the synthetic rubber market,...

Oil-free E-SBR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 49 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 23,5 wt % ASTM D 5775
Oil-extended 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 40,0 wt % ASTM D 5775
Oil Content 27,2 wt % ASTM D 5774
Oil-extended E-SBR
Oil-extended E-SBR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 49 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 23,5 wt % ASTM D 5775
Oil Content 27,2 wt % ASTM D 5774
Oil-extended E-SBR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 51 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 23,5 wt % ASTM D 5775
Oil Content 27,2 wt % ASTM D 5774
Oil-extended E-SBR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 55 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 40,0 wt % ASTM D 5775
Oil Content 27,2 wt % ASTM D 5774
Oil-free E-SBR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 52 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 23,5 wt % ASTM D 5775
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
Oil-extended E-SBR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 50 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 23,5 wt % ASTM D 5775
Oil Content 27,2 wt % ASTM D 5774

Functionalized & Standard S-SBR and Block Co-Polymers

The Buna® S-SBR product family contains a wide range of solution styrene butadiene rubber products which are defined into Buna FX, Buna VSL, Buna SL and Buna BL.

Diblock Copolymers (Buna BL)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 50 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Bound Styrene 48,5 wt % ASTM D 5775
Block Styrene Content 34,5 wt % ASTM D 3314
Functionalized S-SBR (Buna FX)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 65 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Styrene Content 34 wt % Internal Method
Oil Content 27,3 wt % Internal Method
Vinyl Content 32 wt % Internal Method
Functionalized S-SBR (Buna FX)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 63 MU ISO 289 / ASTM D 1646 ML (1+4) 125 °C
Styrene Content 34 wt % Internal Method
Oil Content 75 PHR 27,3 wt % Internal Method
Vinyl Content 32 wt % Internal Method
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 18 wt % ASTM D 5775
Oil Content 27,3 wt % ASTM D 5774
Standard S-SBR (Buna SL)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 75 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Styrene Content 18 wt % Internal Method
Oil Content 13 wt % ASTM D 5774
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
Standard S-SBR (Buna VSL)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 80 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Styrene Content 38 wt % Internal Method
Oil Content 27,3 wt % Internal Method
Vinyl Content 24 wt % Internal Method
Standard S-SBR (Buna VSL)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 66 MU ISO 289 / ASTM D 1646 ML (1+4) 125 °C
Styrene Content 38 wt % Internal Method
Oil Content 27,3 wt % Internal Method
Vinyl Content 30 wt % Internal Method
Standard S-SBR (Buna VSL)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 50 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Styrene Content 38 wt % Internal Method
Oil Content 27,3 wt % Internal Method
Vinyl Content 25 wt % Internal Method
Standard S-SBR (Buna VSL)
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 50 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Styrene Content 26 wt % Internal Method
Oil Content 27,3 wt % Internal Method
Vinyl Content 44,5 wt % Internal Method