In contrast to {TAIL ~ polymers} produced by previous gas phase polymerization processes, the polymers produced by the above previously disclosed initiators and {HEAD ~ the invention catalyst} are not sticky and do not produce agglomerates 
In contrast to { TAIL ~ polymers } produced by previous gas phase polymerization processes , the polymers produced by the above previously disclosed initiators and { HEAD ~ the invention catalyst } are not sticky and do not produce agglomerates
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH