A specific order of addition involves mixture of the transition metal component and the co catalyst component for a contact time of {HEAD ~ 5 120 seconds} followed by {TAIL ~ contact} with an electron donor component for no more than 30 seconds 
followed by
A specific order of addition involves mixture of the transition metal component and the co catalyst component for a contact time of { HEAD ~ 5 120 seconds } followed by { TAIL ~ contact } with an electron donor component for no more than 30 seconds
OTH OTH OTH OTH 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 REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH