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VECTOR® 4211A

Category:	SIS , Styrene Isoprene Styrene Block Copolymer
Manufacturer:	Dexco Polymers LP
Trademark:	VECTOR®
Fillers:	-
Ports:	Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms	FOB, CIF, DAP, DAT, DDP
PDF:	HGyT3a_VECTOR-4211A.pdf
PRICE:	Order Products email sales@su-jiao.com

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Styrene-Isoprene-Styrene (SIS) Block Copolymer

SIS(1) triblock copolymer.

Contains < 1% diblock copolymer.

Medium styrene, high modulus copolymer.

Outstanding thermal stability and melt processability.

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 4211A is a styrene-isoprene-styrene triblock copolymer and is produced via proprietary sequential anionic polymerization technology from Dexco Polymers LP, a Dow/ExxonMobil Venture. It is not formulated with the antioxidant TNPP (tris(nonylphenyl) phosphite).

It is particularly useful in applications requiring a combination of high modulus and high elasticity in film compounds. It is also suited for formulating adhesives for disposables that require high cohesive strength, low creep compliance, and low viscosity at low application temperatures.

General Information
Features	Copolymer Food Contact Acceptable Good Creep Resistance Good Processability Good Thermal Stability High Elasticity High Strength Low Temperature Resistant Low Viscosity
Uses	Adhesives
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)	1.3	g/10 min	ASTM D1238
Solution Viscosity	300	mPa·s	ASTM D2196
Ash Content	0.2	wt%	ASTM D1416
Styrene Content	30.0	wt%	Internal Method

Elastomers	Nominal Value	Unit	Test Method
Stress Relaxation ¹
Peak Force @ 200% strain (A) : 23°C, 889.0 µm	1.52	MPa
Peak Force @ 500% strain : 23°C, 889.0 µm	5.45	MPa
Ratio (A:B) : 23°C, 889.0 µm	2.50
Relaxation @ 200% strain : 23°C, 889.0 µm	7.2	%
Set after 500% strain : 23°C, 889.0 µm	13	%
Unload @ 30% strain : 23°C, 889.0 µm	0.483	MPa
Unload @ 50% strain (B) : 23°C, 889.0 µm	0.621	MPa

Additional Information	Nominal Value	Unit	Test Method
Diblock Content	< 1.0	wt%
Volatiles	0.2	wt%	Internal Method

Hardness	Nominal Value	Unit	Test Method
Durometer Hardness (Shore A, 1 sec)	62		ASTM D2240

Elastomers	Nominal Value	Unit	Test Method
Tensile Stress ²(300% Strain, 25°C)	4.21	MPa	ASTM D412
Tensile Strength ³(Yield, 25°C)	26.2	MPa	ASTM D412
Tensile Elongation ⁴(Break, -4°C)	900	%	ASTM D412

Note Message
1 .	Described in US 7,445,831 patent. Tested on roll milled/compression molded plaques (0.035" thick). Tested in the transverse direction at room temperature.
2 .	25 Wt. % in toluene
3 .	25 Wt. % in toluene
4 .	25 Wt. % in toluene

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