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