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.
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Baysal et al. (1972) studied this question.
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