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- W2064937229 abstract "Poly-2-oxazolidones of high molecular weight have been synthesized from diisocy anates and diepoxides. The synthetic method was first developed for the model compound 3-phenyl-5-phenoxymethyl-2-oxazolidone prepared from phenyl isocyanate and phenyl glycidyl ether. Conditions found most suitable for a high yield involve slow addition of isocyanate to a solution of epoxide and catalyst, temperatures of 160°C or higher, and a catalytic amount of n-butoxylithium in 1-butanol. The same procedure was used to prepare high molecular weight poly-2-oxazolidones. The polymer structure was confirmed by infrared spectroscopy and elemental analysis. All polymers prepared were of sufficient molecular weight to be compression molded. The bulk mechanical properties characterize poly-2-oxazolidones as potentially useful engineering thermoplastics. A mechanism for oxazolidone formation is proposed." @default.
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- W2064937229 date "1970-03-01" @default.
- W2064937229 modified "2023-10-06" @default.
- W2064937229 title "Synthesis of poly-2-oxazolidones from diisocyanates and diepoxides" @default.
- W2064937229 doi "https://doi.org/10.1002/pol.1970.150080304" @default.
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