| Abstract: | The synthesis and characterization of several polymeric peroxycarbamates prepared by successive reaction of poly(ethylene oxides), first, with diisocyanates, and then with hydroperoxides, are described in detail for bis(2,5-dimethyl-2-hydroperoxyhexane peroxycarbamate) polyethers, the chain-extended analogs of these peroxycarbamyl polyethers and for bis(α-cumyl peroxycarbamate) polyether. The polymerization of styrene with this last initiator was studied at 60, 80, and 100°C. Both low- and high-conversion polymerizations were studied. The relationship between the rates of initiation and the inverse degree of polymerization was determined. |
