{HEAD ~ The polybutadiene composition} includes a butadiene polymer with {TAIL ~ a resilience index} greater than about 40 and a weight average molecular weight greater than about 200,000 
{ HEAD ~ The polybutadiene composition } includes a butadiene polymer with { TAIL ~ a resilience index } greater than about 40 and a weight average molecular weight greater than about 200,000
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH