Note: A power-feed emulsion polymerization is normally achieved by feeding to the reactor monomer mixture(s) from one or more reservoirs under monomer-starved conditions. In the simplest case, reservoirs I and II are initially filled with monomers \(\ce{A}\) and \(\ce{B}\), respectively. During polymerization the contents of reservoir I are continuously pumped into the reactor and the contents of reservoir II are continuously pumped into reservoir I at definite rates.