Abstract
13C and 1H NMR was used to examine the type of end group in oligomers and low molecular weight polycarbonate fractions and quantitative estimates were made of the contents of hydroxyl, chloroformate, p-tert-butylphenyl and phenyl end groups, bis-and monochloroformate of diphenylolpropane, free diphenylolpropane, p-tert-butylphenol and phenol, and the number average molecular weight was determined. Results of deformations by 13C and 1H NMR spectra show satisfactory agreement and are in accordance with results of other methods of analysis. Structural characteristics of oligocarbonates obtained under different conditions and of low molecular weight fractions of various polycarbonates were compared.
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