Stereon® 721AC

Category: SBC , Styrene Butadiene Block Copolymer
Manufacturer: Firestone Synthetic Rubber & Latex Co.
Trademark: Stereon®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: xurHbK_Stereon-721AC.pdf
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Stereon 721AC is a solution polymerized copolymer of butadiene and styrene that has been designed as a graftable rubber modifier for thermoplastic resins. The low solution viscosity of Stereon 721AC makes it particularly attractive for high rubber systems. Stereon 721AC also contains very low gel levels, comparable to Diene.
General Information
Features
  • Low Gel
  • Low Viscosity
Uses
  • Blending
  • Plastics Modification
Forms
  • Pellets
PhysicalNominal ValueUnitTest Method
Specific Gravity 0.908g/cm³
Mooney Viscosity (ML 1+4, 100°C)35MU
Solution Viscosity 129mPa·sASTM D445
Bound Styrene 10.0%
Ash Content 0.2wt%
Block Styrene 7.0%
Color - APHA 5.0
Inherent Viscosity - DSV 1.4
Volatile Matter 0.40wt%
Additional InformationNominal ValueUnit
Dissolving Time (25°C)2.0hr
Recovery - Williams 24.00mm
Toluene Insolubles 0.00200wt%
Williams Plasticity - Y3 5.00mm
ThermalNominal ValueUnitTest Method
Glass Transition Temperature -92.0°CDSC
OpticalNominal Value
Refractive Index 1.525
Note Message
1 .5.43% in Toluene
2 .R1
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