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