Kraton® D4158 K (O/E SBS) Radial Copolymer

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Kraton® D4158 K (O/E SBS) Radial Copolymer (discontinued **)
Categories:	Polymer; Thermoplastic; Styrene-Butadiene; Styrene/Butadiene/Styrene (SBS)
Material Notes:	Description: Kraton D4158 K is an oiled, radial copolymer based on styrene and butadiene with a polystyrene content of 31%. It is supplied from North America in the physical form: Kraton D4158 KT - supplied as a dusted porous pellet Kraton D4158 KU - supplied as an undusted porous pellet Region: North America, Europe, Asia Pacific, Japan, and South America Uses: Kraton D4158 K is used as a modifier of bitumen or thermoplastics and in compound formulations. It may also find use as an ingredient in formulating adhesives, sealants and coatings Applications: Adhesives, Sealant and Coatings; Bitumen Modification; Compounding and Personal Hygiene; Footwear; Impact Modification; and Roads and Roofing Information provided by Kraton®
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Physical Properties	Metric	English	Comments

Specific Gravity	0.920 g/cc	0.920 g/cc	ASTM D4025
Volatiles	<= 1.0 %	<= 1.0 %	KM 04
Viscosity	1090 - 2050 cP	1090 - 2050 cP	25% Toluene Solution at 25°C; BAM 922
Melt Flow	33 g/10 min @Load 5.00 kg, Temperature 200 °C	33 g/10 min @Load 11.0 lb, Temperature 392 °F
Ash	0.25 - 0.45 %	0.25 - 0.45 %	Talc; BAM 908

Chemical Properties	Metric	English	Comments
Diblock Content	16 %	16 %

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	41	41	ASTM D2240
Tensile Strength	8.96 MPa	1300 psi	Typical values on polymer compression molded at 350ºF; ASTM D412
Elongation at Break	1110 %	1110 %	Typical values on polymer compression molded at 350ºF; ASTM D412
300% Modulus	1.58 MPa @Strain 300 %	229 psi @Strain 300 %	compression molded at 350ºF; ISO 37

Descriptive Properties
Content	Non-staining phenolic antioxidant		0.15-0.35%, KM 08
	Oil		32.2-34.1%, KM 05
	Polystyrene		29.2-32.2%, KM 03
Styrene/Rubber Ratio	31/69

**
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PKRA9846 / 132745

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