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- W2111755352 abstract "The polymerization of 2-pyrrolidone (1) initiated with its potassium salt (2-oxo-1-pyrrolidinylpotassium) (2) and accelerated by the presence of CO2, was investigated. For the optimal concentration of 2 (≈5 mol-%) and 0,5 mol-% CO2, the most suitable polymerization temperature was found to the range between 45 and 55°C. The variation of CO2 concentration, 0,5 < [CO2] < 3 mol-%, does not affect the polymerization yield under the optimal conditions. The similarity of the course of polymerization in the presence of CO2 directly introduced into the reaction mixture with that in the presence of isolated carboxylate of 1, is considered as a proof that CO2 is transformed into the active potassium carboxylate of 1. The order of polymerization reaction with respect to initiator was found to be ≈0,8 indicating the complexity of the reaction mechanism." @default.
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- W2111755352 date "1982-11-19" @default.
- W2111755352 modified "2023-10-03" @default.
- W2111755352 doi "https://doi.org/10.1002/macp.1982.021831110" @default.
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