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