The process 1, wherein said brominated monomer is in such amount as to provide a polymer containing from 0.05 to 2% by {HEAD ~ weight} of {TAIL ~ bromine} referred to the total weight of the monomeric units 
of
The process 1 , wherein said brominated monomer is in such amount as to provide a polymer containing from 0.05 to 2 % by { HEAD ~ weight } of { TAIL ~ bromine } referred to the total weight of the monomeric units
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 REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH