Commodity Plastics
Styrenic Block Copolymer Commodity — Styrenic Block Copolymers for Commodity Applications
SBCs like SBS and SEBS are thermoplastic elastomers combining rubber-like elasticity with thermoplastic processability. Commodity grades are used in adhesives, sealants, asphalt modification, and as impact modifiers for other plastics.
SBCSBSSEBSKratonDynasol
Manufacturers
3
Grades
3
Applications
4
Equivalents
2
Physical Properties
- Density
- 0.90-1.00 g/cm³
- Water Absorption (24h)
- <0.1 %
- Transparency
- Translucent to opaque
- Shrinkage
- 1-3 %
Mechanical Properties
- Young's Modulus
- 0.01-0.05 GPa
- Tensile Strength
- 5-15 MPa
- Elongation at Break
- 300-800 %
- Impact Strength (Izod)
- No break (at room temp)
Thermal Properties
- Glass Transition Temperature
- -60 to -40 °C
- Melting Point
- N/A (softens)
- Continuous Service Temperature
- 50-70 °C
- Heat Deflection Temperature
- N/A
Electrical Properties
- Dielectric Constant
- 2.5-3.0
- Volume Resistivity
- 10¹³-10¹⁵ Ω⋅cm
- Dielectric Strength
- 15-25 kV/mm
Chemical Resistance
- Acids
- Good resistance
- Bases
- Good resistance
- Solvents
- Excellent resistance to polar solvents; softened by aromatic and chlorinated hydrocarbons
- UV Resistance
- Poor (requires stabilization)
Sustainability
- Recyclability
- Recyclable (often compounded)
- Recycling Code
- 7 (Other) or depends on base polymer
- Carbon Footprint
- Moderate
Manufacturing compatibility
Adhesive compoundingCompoundingExtrusion
Applications
Adhesives
Sealants
Asphalt modification
Impact modification
Available grades
SBS D1101SEBS G1650SBS D2400