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 {HEAD ~ the amount} of {TAIL ~ iodine} or bromine which are combined in the end position of the polymeric chain in 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 { HEAD ~ the amount } of { TAIL ~ iodine } or bromine which are combined in the end position of the polymeric chain in the final polymer
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