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