SBS Thermoplastic Elastomer (Styrene-Butadiene-Styrene Block Copolymer, SBS) CAS 9003-55-8

SBS thermoplastic elastomer is a core variety of styrene-based thermoplastic elastomers, combining the elasticity of rubber with the thermoplasticity of plastics. By adjusting the styrene content (20%-40%) and molecular structure (linear/star-shaped), continuous performance variations from soft elastomers to high-rigidity plastics can be achieved

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Product Description

SBS is widely used in asphalt modification (highways, waterproof membranes), adhesives, footwear materials, and plastic modification, making it an indispensable key material in infrastructure, construction, footwear, and adhesive industries. Products conform to national standards and are available in various grades, including asphalt-modified materials, adhesive-specific materials, footwear material-specific materials, and plastic-modified materials. Small-batch trial orders and customized packaging are supported. With access to major ports such as Qingdao, Tianjin, and Shanghai, exports are efficient and hassle-free.

Product Information

ItemDescription
Product NameSBS Thermoplastic Elastomer (Styrene-Butadiene-Styrene Block Copolymer, SBS)
CAS No.9003-55-8
AppearanceWhite or slightly yellow porous pellets or powder
Main TypesLinear SBS: Linear triblock structure, good flowability and processability. For adhesives, asphalt modification, plastic modification, injection molded products.
Radial/Star SBS: Star-shaped multi-arm structure, higher strength and heat resistance. For high-performance asphalt modification, shoe soles, premium elastomers.
Oil-Extended SBS: Contains naphthenic or aromatic oil for reduced hardness, improved flexibility and processability. For adhesives, sealants, soft products.
SBS Adhesive Grade: Moderate molecular weight, high bonding strength. For footwear adhesives, pressure-sensitive adhesives, hot melt adhesives, label adhesives.
SBS Asphalt Modification Grade: High deformation resistance, good high-temperature stability. For high-grade pavement modified asphalt, waterproofing membranes.
SBS Shoe Grade: Good resilience, abrasion resistance, slip resistance. For sports shoe soles, casual shoe soles, insoles.
SBS Plastic Modification Grade: Improves flexibility, impact resistance and low-temperature resistance of PP, PE. For automotive bumpers, appliance housings.
Key Physical & Chemical PropertiesDensity: 0.92-0.95 g/cm³; Melting Temperature: 150-200℃; Glass Transition Temperature: approx. -80℃ (PB block), approx. 95-100℃ (PS block); Service Temperature: -60℃ to 80℃ (special grades up to 100℃); Elongation at Break: ≥800%-1200%; Shore Hardness: 30-90 (depending on styrene content and oil extension).
Typical Performance ParametersStyrene Content: 20%-40% (standard); Tensile Strength: 10-35 MPa (grade dependent); Elongation at Break: 800%-1200%; Modulus at 300%: 2-10 MPa; Permanent Set: ≤20%; Melt Flow Rate: 0.5-15 g/10min (grade dependent, 190℃/5kg); Resilience: ≥60%.
FeaturesCombines rubber elasticity with thermoplastic processability (no vulcanization required); excellent low-temperature performance (-60℃); high tensile strength and elongation; good chemical resistance (acids, alkalis, water, salts); excellent adhesion and compatibility with asphalt, rubber, plastics; versatile processing (injection, extrusion, molding, coating); recyclable.
Main ApplicationsAsphalt Modification (largest application) : High-grade highways, expressways, airport runways, bridge pavements; SBS modified asphalt waterproofing membranes for building roofs, basements, tunnels, bridges.
Adhesives & Sealants: Footwear adhesives, pressure-sensitive adhesives (tapes, labels), hot melt adhesives, construction sealants.
Footwear: Sports shoe soles, casual shoe soles, insoles (high resilience, abrasion resistance, slip resistance).
Plastic Modification: Impact modification of PP, PE for automotive bumpers, instrument panels, appliance housings, toys, plastic drums.
Others: Wire/cable sheathing, toys, sports equipment, medical devices, pipes, seals.
Packaging20kg woven bags (PE liner); 25kg woven bags; custom packaging available (jumbo bags).
Storage ConditionsStore in cool, dry, well-ventilated warehouse, away from direct sunlight and heat sources (temperature ≤30℃). Avoid contact with strong oxidizers, acids and alkalis.
Shipping RequirementsNon-hazardous cargo; protect from sun and rain; handle with care.


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FAQ

Q1: Is Huafeng Chemical a manufacturer or a trader?
A: We are a professional service provider specializing in chemical foreign trade. Rather than being limited to the products of a single factory, we leverage the chemical industry cluster in Shandong Province to integrate production resources from multiple high-quality manufacturers. This allows us to offer a wide range of sourcing options—covering various product categories and origins—instead of simply pushing a single product. Furthermore, our core competitiveness lies in our professional foreign trade services (covering documentation, logistics, and regulatory compliance), ensuring a smooth and worry-free procurement process for you.


Q2: How is the security of my transaction guaranteed when working with Huafeng Chemical?
A: We strictly adhere to international trade rules (Incoterms® 2020) and accept various payment methods, such as Letters of Credit (L/C) and Telegraphic Transfers (T/T). For new clients, we support small-batch trial orders and can clearly define arbitration clauses and applicable laws within the contract. Additionally, we maintain a robust risk management system to help you mitigate common trade risks, such as exchange rate fluctuations, shipping delays, and document discrepancies.


Q3: Do you have experience serving clients in Russian-speaking regions?
A: Yes. We place great importance on the Russian-speaking market; our team includes Russian-speaking business professionals who are well-versed in the import regulations of Russia and the Eurasian Economic Union (EAEU). We understand the importance of EAC certification to clients in these regions and can assist with related compliance inquiries. We have established connections with chemical traders across various CIS countries and have gained valuable experience in specialized packaging and temperature-controlled shipping designed to withstand harsh local winter conditions.


Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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