The amount of such compounds capable of providing I or Br ions, to be used in the process of the invention, is preferably higher than the amount which corresponds to the amount of iodine or bromine which are combined in the end position of {HEAD ~ the polymeric chain} in {TAIL ~ the final polymer} 
The amount of such compounds capable of providing I or Br ions , to be used in the process of the invention , is preferably higher than the amount which corresponds to the amount of iodine or bromine which are combined in the end position of { HEAD ~ the polymeric chain } in { TAIL ~ the final polymer }
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL