SEPTON™ – The versatile TPE

SEPTON™ is a series of styrenic-based thermoplastic rubbers developed by KURARAY. It is a block copolymer that consists of styrene based hard-blocks and a diene soft block. These products are hydrogenated di-block and tri-block styrene copolymers that exhibit rubber-like properties over a broad temperature range. In comparison to non-hydrogenated styrenic block copolymers, hydrogenated SEPTON™ exhibits better tensile strength, better heat, weather, and ozone resistance, and better compatibility with poly-olefins. Prior to processing, the polystyrene end blocks are associated in rigid domains and act as a crosslinking point below the glass transition temperature (Tg) of polystyrene. In the presence of heat and shear during processing, the polystyrene domains soften and permit flow. After cooling, the polystyrene domains reform and harden, locking the rubber network in place. This physical phenomenon provides SEPTON™ with its high tensile strength and elasticity. Due to its thermoplastic properties SEPTON™ is recyclable.

SPECIAL PROPERTIES
  • Excellent mechanical properties
  • Weather resistant
  • Good resistance to chemicals
  • Good low temperature performance
  • Non-toxic
  • High heat resistance
  • Excellent electrical insulation
  • Rubber like elasticity
  • Recyclable
MAIN AREAS OF APPLICATION
  • TPE compounds
  • Adhesives, Coatings & Sealants
  • Automotive components
  • Fibers and nonwovens
  • Polymer modifiers and compatibilizer
  • Medical products
  • Toys and sporting goods
  • Elastic films
  • Electronics
  • Consumer goods
  • Soft touch grips
  • Gels
  • Packaging

Prior to processing, the polystyrene end blocks are associated in rigid domains. In the presence of heat and shear such as during processing, the polystyrene domains soften and permits flow. After cooling, the polystyrene domains reform and harden, locking the rubber network in place. This physical phenomenon provides SEPTON™ with its high tensile strength and its elasticity.

For further questions concerning SEPTON™ please contact your local sales team.


STANDARD GRADES
SPECIAL PRODUCT LINES
APPLICATIONS