ene) chain comprised of poly(ethylene oxide), poly(ethylene oxide)-co-poly(propylene oxide) or other poly(ethylene oxide) containing or poly(ethylene oxide) rich chains [i.e., where poly(ethylene oxide) is included in an amount ranging from at least about 50% by weight of the polymeric chain and] L is hydroxyl, a halide such as Cl, I or Br or an ester group which can be prepared from a hydroxyl gr