The multi branched diene polymers obtained by {HEAD ~ gas phase anionic polymerization} employing {TAIL ~ the catalysts} exhibit desirable properties, such as an extremely high molecular weight, a controlled molecular weight distribution, Tg and vinyl content, and the ability to readily absorb hydrocarbon solvents and oils 
employing
The multi branched diene polymers obtained by { HEAD ~ gas phase anionic polymerization } employing { TAIL ~ the catalysts } exhibit desirable properties , such as an extremely high molecular weight , a controlled molecular weight distribution , Tg and vinyl content , and the ability to readily absorb hydrocarbon solvents and oils
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH