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ASAPRENE™ T-438

Technical Datasheet | Supplied by Asahi Kasei

ASAPRENE™ T-438 by Asahi Kasei is a styrene butadiene styrene (SBS) copolymer grade. It is available in pellet form and offers good processability, low viscosity, high level of balanced characteristics, superior flexibility and tack characteristics. It is processed by compression molding. Specifically developed for superior characteristics and performance in pressure-sensitive & other adhesives. ASAPRENE™ T-438 by Asahi Kasei is recommended for adhesives for building & construction and hot-melt pressure-sensitive adhesives applications.

ASAPRENE™ T-438 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)

25 g/10 min

(200°C, 5 kg)

ISO 1133

Viscosity

470 mPa.s

(25% solution in toluene)

Asahi Kasei method

Styrene/butadiene Weight Ratio

35/65 wt%

Asahi Kasei method

Compression Molding Properties

Value & Unit

Test Condition

Test Method

Roll Kneading Temperature

120 - 130 °C

Test Measurement Temperature

23 °C

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ASAPRENE™ T-438

ASAPRENE™ T-438 Properties

Physical Properties

ASAPRENE™ T-438 Processing Guidelines

Compression Molding Properties