In the high pressure of polymerization of ethylene homopolymer or copolymers conditions in the reactor may become unstable leading to {HEAD ~ the decomposition} of {TAIL ~ the reaction mixture} 
of
In the high pressure of polymerization of ethylene homopolymer or copolymers conditions in the reactor may become unstable leading to { HEAD ~ the decomposition } of { TAIL ~ the reaction mixture }
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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL