The initiating constituent is usually present in an amount of about 0.05 to about 5 percent by {HEAD ~ weight} of {TAIL ~ the copolymer} 
of
The initiating constituent is usually present in an amount of about 0.05 to about 5 percent by { HEAD ~ weight } of { TAIL ~ the copolymer }
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 TAIL