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R. Samborska-Skowron, A. Balas

Qualitative identification of isocyanurate rings in urethane-isocyanurate elastomers

and their hydrolyzates

Polimery 2003, No 5, 371

Summary

It has been stated that reliable qualitative identification of isocyanurate rings directly in urethane-isocyanurate elastomers (EUI) can not be realized using ATR method. Such identification becomes possible only on the basis of the analysis of EUI hydrolysis in acid medium products. It was done using following methods: FT-IR (Fig. 2), ¹³C NMR (Fig. 3), HPLC and UV (Figs. 4 and 5). There was found that investigated EUI samples, obtained by two-step method (via prepolymer) using commercial cyclopolymerization catalyst "Polycat 41", contain the products of free NCO groups cyclization.

Keywords: urethane-isocyanurate elastomers, acid hydrolysis, isocyanurate rings, qualitative analysis, spectroscopic methods, chromatography

R. Samborska-Skowron, A. Balas

Qualitative identification of isocyanurate rings in urethane-isocyanurate elastomers and their hydrolyzates