The Full Form of SEBS is Styrene Ethylene Butylene Styrene.

Styrene-ethylene-butylene-styrene, also known as SEBS, is an important thermoplastic elastomer (TPE)  which behaves like rubber without undergoing vulcanization. SEBS is strong and flexible, has excellent heat and UV resistance and is easy to process. It is produced by partial and selective hydrogenating of styrene-butadiene-styrene copolymer (SBS)¹ which improves the thermal stability, weathering and oil resistance, and makes SEBS steam sterilisable.² However, hydrogenation also reduces the mechanical performance and increases the cost of the polymer.

SEBS elastomers are often blended with other polymers to enhance their performance. They are used as impact modifiers for engineering thermoplastics and as flexibilizers / tougheners for clear polypropylene (PP).³ Often oil and fillers are added to lower cost and / or to further modify the properties. Important applications include hot-melt pressure sensitive adhesives, toy products⁴, shoe soles, and TPE-modified bitumen products for road paving and roofing applications.