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Master Bond adhesives

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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 PropertiesOriginal ValueComments
Specific Gravity 0.900 g/cc
Volatiles <= 0.60 %ASTM D5668
Viscosity 28 - 36 cP5.43% in Toluene; ASTM D445
Mooney Viscosity 33 - 43
@Temperature 100 °C
ML/4; ASTM D1646
Ash <= 0.20 %ASTM D5667
 
Chemical PropertiesOriginal ValueComments
Styrene Content 4.5 - 8.5 %Block; ASTM D3314
 9.0 - 11.5 %Bound; ASTM D5775
 
Thermal PropertiesOriginal ValueComments
Glass Transition Temp, Tg -92.0 °CASTM E1356
 
Descriptive Properties
Color0-10 APHAASTM D1209
Content<0.007%Toluene Insolubles
Dissolving Time<4 hrs

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PLION081 / 317990

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