BassTech International is a global supplier of synthetic rubbers, plastics, and polymers. Our knowledgeable sales team and global support system keep us at the forefront of synthetic rubber technology. One of our core products is styrene butadiene styrene (SBS). We offer SBS in crumb and powder forms with a variety of packaging options to suit any production need.
Industries who use SBS
- Roofing
- Mastics
- Sealants
- Coatings
- Paving
What is SBS?
Styrene-butadiene Styrene is a synthetic rubber commonly referred to as SBS. The rubber is classified as a block co-polymer. The structure of SBS allows for a blend of hard plastic and elastic properties. SBS is also very compatible with bitumen, making it the perfect bitumen modifier to achieve cold weather flexibility and elastic properties. The synthetic rubber is widely used in modified bitumen roofing, mastics, sealants, coatings, and paving.
Specifications
|
KTR 101
|
KTR 201
|
KTR 401
|
KTR 401H
|
|
|
Molecular Structure
|
Linear Type
|
Linear Type
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Radial Type
|
Radial Type
|
|
Styrene Content
|
28.5 – 31.5% | 28.5 – 31.5% | 28.5 – 31% | 31 – 33% |
|
Volatile Matter
|
1.0% Maximum | 1.0% Maximum | 1.0% Maximum | 1.0% Maximum |
|
Ash Content
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0.5% Maximum | 0.5% Maximum | 0.5% Maximum | 0.5% Maximum |
|
Solution Viscosity
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4100 – 4900 cps | 1000 – 1200 cps | 22.3 – 24.5 cps | 20 – 25 cps |
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Melt Index (200°C, 5kg)
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1 g/10min Maximum | 4 – 9 g/10min | 1 g/10min Maximum | 1 g/10min Maximum |
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Tensile Strength
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200 kgf/cm2 Minimum | 200 kgf/cm2 Minimum | 150 kgf/cm2 Minimum | 150 kgf/cm2 Minimum |
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Modulus at 300%
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20 – 28 kgf/cm2 | 34 – 42 kgf/cm2 | 23 – 32 kgf/cm2 | 23 – 32 kgf/cm2 |
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Elongation
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700% Minimum | 750% Minimum | 560% Minimum | 560% Minimum |
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Hardness (SHORE-A, 5 sec)
|
74 – 80 | 69 – 75 | 82 – 92 | 82 – 92 |
|
Molecular Weight
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105,000 | 71,000 | 200,000 | 220,000 |