BR277

BR277

  • BR277
  • BR277
  • BR277
  • BR277
  • BR277
  • BR277
  • BR277

BR277

Main Features

BR277 rubber is a solution polymerized low cis star branched, low efficiency coupled, oil extended polybutadiene produced using alkyl lithium initiator in batch reactors.

 

 

Keys

BR 277 oil extended polybutadiene is used in tire compounds and in some mechanical good compounds.

Properties Test Methods Analytical Manual Units  
General        
Mooney Viscosity ASTM D1646 MPP16 ML1+4 @ 100°C 37 – 47
Bound Styrene ASTM D5775 MPP5-MPP6 wt % N/A
Block styrene ASTM D3314 MPP8 wt % N/A
Solution viscosity* ASTM D5774 MPP9 cPs N/A
Gel content   MPP12 arbitrary N/A
Molecular weight   MPP1 KDalton N/A
Coupling efficiency   MPP1 % N/A
Volatile matter content ASTM D5668 MPP10 wt % 0.3 max
Residual solvent   MPP18 ppm N/A
Colour ASTM E313 MPP13 Yellow index N/A
Solution color (Pt/Co) ASTM D1209   arbitrary N/A
Vinyl content   MPP5-MPP6 wt % on butadiene 11 – 13
Ash content ASTM D5667 MPP15 wt % 0.04
Solvent extractables ASTM D5774 MPP11 wt % 26.3–29.3
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