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Butadiene Rubber

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 380 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
Buna® CB 380 IT 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
Buna® CB 530 T 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
Buna® CB 55 GPT 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
Buna® CB 550 Lithium BR, Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 54 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 163 mPa.s Internal Method
Cis 1,4 Content 38 %
Color < 5,0 Internal Method
Buna® CB 550 IT Lithium BR, Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 54 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 163 mPa.s Internal Method
Cis 1,4 Content 38 %
Color < 5,0 Internal Method
Buna® CB 550 T Lithium BR, Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 54 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 163 mPa.s Internal Method
Cis 1,4 Content 38 %
Color < 4,5 Internal Method
Buna® CB 565 T Lithium BR, Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 60 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 44 mPa.s Internal Method
Cis 1,4 Content 38 %
Color < 4,5 Internal Method
Buna® CB 70 GPT Lithium BR, Plastic Modification
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 70 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 250 mPa.s Internal Method
Cis 1,4 Content 36 %
Color < 10,0 Internal Method
Buna® CB 728 T Plastic Modification, Neodymium BR
Property Nominal Value Test Method Condition Temperature
Mooney Viscosity 44 MU ISO 289 / ASTM D 1646 ML (1+4) 100 °C
Solution Viscosity 160 mPa.s Internal Method
Cis 1,4 Content > 94 %
Color < 5,0 Internal Method