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VECTOR® 4230

Category:	SI , Styrene Isoprene Branched Copolymer
Manufacturer:	Dexco Polymers LP
Trademark:	VECTOR®
Fillers:	-
Ports:	Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms	FOB, CIF, DAP, DAT, DDP
PDF:	xMfDow_VECTOR-4230.pdf
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VECTOR 4230
Styrene-Isoprene (SI)n Block Copolymer

Radial (SI)n (1) block copolymer.

Contains ~30% SI diblock copolymer.

High strength with low viscosity.

High modulus, high cohesive strength.

Supplied as a dense 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 4230 styrene-isoprene radial copolymer is produced via proprietary anionic polymerization technology from Dexco Polymers LP, a Dow/ExxonMobil Venture. It is formulated with the antioxidant TNPP (tris(nonylphenyl) phosphite).

It is made with a patented coupling process that yields a polymer primarily with a 4-arm radial architecture. The radial structure provides viscosity shear thinning as well as higher modulus, cohesive strength, and heat resistance versus linear SIS/SI with comparable styrene content and melt flow rate. It is ideally suited for pressure sensitive applications requiring high strength, low viscosity, and easy melt processing.

General Information
Features	Antioxidant Food Contact Acceptable Good Flexibility Good Processability High Heat Resistance High Strength Low Viscosity
Forms	Pellets

Physical	Nominal Value	Unit	Test Method
Specific Gravity	0.938	g/cm³	ASTM D792
Melt Mass-Flow Rate (MFR) (200°C/5.0 kg)	1.4	g/10 min	ASTM D1238
Ash Content	0.3	wt%	ASTM D1416
Styrene Content	20.0	wt%	Internal Method

Additional Information	Nominal Value	Unit	Test Method
Diblock Content	30.0	wt%	Internal Method
Volatiles	0.3	wt%	Internal Method

Hardness	Nominal Value	Unit	Test Method
Durometer Hardness (Shore A, 1 sec)	46		ASTM D2240

Elastomers	Nominal Value	Unit	Test Method
Tensile Stress ¹(300% Strain, 0.889 mm)	1.86	MPa	ASTM D412
Tensile Strength - Across Flow ²(Yield, 0.889 mm)	13.8	MPa	ASTM D412
Tensile Elongation ³(Break, 0.889 mm)	1200	%	ASTM D412

Note Message
1 .	Tested on roll milled/compression molded plaques
2 .	Tested on roll milled/compression molded plaques
3 .	Tested on roll milled/compression molded plaques

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