Lion Stereon™ 721AC Styrene-butadiene

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Lion Stereon™ 721AC Styrene-butadiene
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Styrene Butadiene Rubber
Material Notes:	Stereon™721AC is a solution polymerized styrene-butadiene block copolymer that has been designed as an impact modifier for thermoplastic ABS resin. The low solution viscosity of this product makes it particularly attractive for high rubber loading systems. Stereon™721AC also contains a non-volatile antioxidant stabilizer system and has a very low gel content. Information provided by Lion Elastomer
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Physical Properties	Metric	English	Comments

Specific Gravity	0.900 g/cc	0.900 g/cc
Volatiles	<= 0.60 %	<= 0.60 %	ASTM D5668
Viscosity	28 - 36 cP	28 - 36 cP	5.43% in Toluene; ASTM D445
Mooney Viscosity	33 - 43 @Temperature 100 °C	33 - 43 @Temperature 212 °F	ML/4; ASTM D1646
Ash	<= 0.20 %	<= 0.20 %	ASTM D5667

Chemical Properties	Metric	English	Comments
Styrene Content	4.5 - 8.5 %	4.5 - 8.5 %	Block; ASTM D3314
	9.0 - 11.5 %	9.0 - 11.5 %	Bound; ASTM D5775

Thermal Properties	Metric	English	Comments
Glass Transition Temp, Tg	-92.0 °C	-134 °F	ASTM E1356

Descriptive Properties
Color	0-10 APHA		ASTM D1209
Content	<0.007%		Toluene Insolubles
Dissolving Time	<4 hrs

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PLION081 / 317990

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