Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Kuraray SEPTON™ 2104 Impact Modifier

SEPTON™ 2104 is a SEPS styrenic thermoplastic elastomer of Kuraray’s 2000 series with ultra-high 65% styrene content and non-crystallizing structure. It features high hardness, good melt flowability, excellent heat & weather resistance and high electrical insulation, ideal for rigid-tough material modification and high-hardness soft component processing.

Features Of Kuraray SEPTON™ 2104 Impact Modifier

  1. Ultra-high styrene content (65%) with non-crystallizing SEPS structure, delivering high hardness and excellent rigid-tough mechanical properties.

  2. Good melt flowability ensures smooth processing in extrusion, injection molding and other forming processes for high-hardness products.

  3. Superior heat, weather and chemical resistance, maintaining stable performance in high-temperature and harsh service environments.

  4. High electrical insulation performance, suitable for the preparation of electrical and electronic components with insulation requirements.

  5. Good compatibility with olefin and styrene resins, effectively improving the hardness and impact resistance of modified materials.

Typical Applications Of Kuraray SEPTON™ 2104 Impact Modifier

  1. Polymer modification: Serves as a modifier for PP/PS and other resins to improve material hardness, rigidity and surface gloss.

  2. High-hardness soft components: Used in automotive interior hard soft-touch parts, stationery pen holders and tool handles for rigid-tough texture.

  3. Electrical and electronic components: Applied in wire cable insulation layers, electronic component gaskets for high electrical insulation.

  4. Daily necessities: Processed into high-hardness toy parts, sporting goods accessories with excellent wear resistance and durability.

  5. Adhesive formulations: Compounded with tackifying resins to make high-hardness structural adhesives for bonding rigid plastic and metal materials.

Specifications Of Kuraray SEPTON™ 2104 Impact Modifier

Physical Properties
Styrene Content65 wt%
Hardness98 (Type A)
Melt Flow Properties
Melt Flow Rate (230°C, 2.16 kg)0.4 g/10min
Melt Flow Rate (200°C, 10.0 kg)22 g/10min
Solution Viscosity (Toluene, 30°C)
Solution Viscosity (5 wt%)- mPa·s
Solution Viscosity (10 wt%)- mPa·s
Solution Viscosity (15 wt%)23 mPa·s
Physical Form
Physical FormPellets















































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