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

Kuraray SEPTON™ 1020 Impact Modifier

SEPTON™ 1020 is a SEP styrenic thermoplastic elastomer of Kuraray’s 1000 series, a di-block copolymer with 36% styrene content. It features excellent transparency and flowability, rubber-like elasticity over a wide temperature range, plastic-like processability upon heating, and offers good heat, weather, chemical resistance and high electrical insulation, ideal for adhesives, sealants, automotive parts and polymer modification.

Features Of Kuraray SEPTON™ 1020 Impact Modifier

  1. Di-block SEP structure delivers outstanding transparency and flowability for clear formulations and easy processing.

  2. Rubber-like elasticity in wide temperature range and plastic-like processability when heated, enabling flexible production and forming.

  3. Good heat, weather and chemical resistance, plus high electrical insulation, suitable for diverse harsh service conditions.

  4. Compatible with polyolefins, process oil, tackifying resins, etc., to make soft materials replacing vulcanized rubber/PVC or heat-resistant adhesives.

  5. Acts as unsaturated polyester modifier and impact modifier, and works as a compatibilizer for polar/non-polar resin blending.

Typical Applications Of Kuraray SEPTON™ 1020 Impact Modifier

  1. Adhesives and sealants: formulated into clear, weather-resistant adhesives and sealants with good adhesion and flexibility.

  2. Automotive components: used for gaskets, soft-touch parts, wire & cable insulation due to elasticity and insulation.

  3. Polymer modification: serves as impact modifier for unsaturated polyester, improving toughness and processability.

  4. Lubricant additives: acts as viscosity index improver to enhance lubricant performance under varying temperatures.

  5. Daily necessities: applied in soft-touch grips, toys, sporting goods and non-woven fabric bonding for softness and durability.

Specifications Of Kuraray SEPTON™ 1020 Impact Modifier

PropertyNominal Value (Unit)
Physical Properties
Styrene Content36 wt%
Specific Gravity0.908-0.95 kg/m³
Hardness70 (Type A)
Melt Flow Properties
Melt Flow Rate (230°C, 2.16 kg)- g/10min
Melt Flow Rate (200°C, 10.0 kg)1.8 g/10min
Solution Viscosity (Toluene, 30°C)
Solution Viscosity (5 wt%)- mPa·s
Solution Viscosity (10 wt%)42 mPa·s
Solution Viscosity (15 wt%)- mPa·s
Physical Form
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