Abstract
To determine acetone microimpurities (⩾ 0.5 · 10 -5%) formed during polyoxypropylene polyol (POP) synthesis, a method has been proposed that involves continuous gas extraction and subsequent GC of the equilibrium vapour phase. The influence of temperature and duration of gas extraction, acetone and propylene oxide concentrations and molecular weight of POP on the partition coefficient for the alkaline POP-argon system have been studied. The effect of the gas extraction raste and duration on the specific rate of acetone formation was investigated, and the activation energy of acetone formation reactions was determined. The proposed method is applicable to the determination of continuously formed microimpurities in volatile compounds of polymerization systems.
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