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VECTOR® 8508

Category:	SBS , Styrene Butadiene Styrene Block Copolymer
Manufacturer:	Dexco Polymers LP
Trademark:	VECTOR®
Fillers:	-
Ports:	Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms	FOB, CIF, DAP, DAT, DDP
PDF:	iAlt0v_VECTOR-8508.pdf
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VECTOR 8508
Styrene-Butadiene-Styrene (SBS) Block Copolymer

SBS(1) triblock copolymer.

Contains <1% diblock copolymer.

Medium styrene, low modulus copolymer.

Outstanding thermal stability and excellent melt processability.

Supplied as a porous pellet, dusted with talc.

VECTOR styrenic block copolymers find use under certain regulations as articles or as ingredients in articles intended for food contact or medical applications. Please contact your Dexco Polymers agent for a detailed letter of certification or further information.

VECTOR 8508 styrene-butadiene-styrene block copolymer is produced via proprietary sequential anionic polymerization technology from Dexco Polymers LP, a Dow/ExxonMobil Venture. It is formulated with the antioxidant TNPP (tris(nonylphenyl) phosphite).

It has excellent thermoplastic elastomer properties, melt processability, and physical strength. It has superior melt processability when compared to VECTOR 2518 SBS. It is designed for use as an impact/toughness modifier in styrenics and in formulating adhesives.

General Information
Additive	Antioxidant
Features	Antioxidant Copolymer Food Contact Acceptable Good Impact Resistance Good Processability Good Thermal Stability Good Toughness High Strength Porous
Uses	Compounding Plastics Modification
Forms	Pellets
Processing Method	Compounding

Physical	Nominal Value	Unit	Test Method
Specific Gravity	0.938	g/cm³	ASTM D792
Melt Mass-Flow Rate (MFR) (200°C/5.0 kg)	1.2	g/10 min	ASTM D1238
Solution Viscosity	400	mPa·s	ASTM D2196
Ash Content	0.8	wt%	ASTM D1416
Styrene Content	29.0	wt%	Internal Method

Additional Information	Nominal Value	Unit	Test Method
Diblock Content	< 1.0	wt%	Internal Method
Volatiles	0.4	wt%	Internal Method

Hardness	Nominal Value	Unit	Test Method
Durometer Hardness (Shore A, 1 sec)	65		ASTM D2240

Elastomers	Nominal Value	Unit	Test Method
Tensile Stress ¹(300% Strain, 25°C)	3.65	MPa	ASTM D412
Tensile Strength ²(Yield, 25°C)	33.1	MPa	ASTM D412
Tensile Elongation ³(Break, 25°C)	1100	%	ASTM D412

Note Message
1 .	25 Wt. % in toluene
2 .	25 Wt. % in toluene
3 .	25 Wt. % in toluene

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