Ethoxylates are obtained by the addition of ethylene oxide to hydrophobic substrates having a labile hydrogen atom. The reaction is traditionally carried out in the presence of alkaline catalysts NaOH. Broad-range-distributed products are obtained, which contain significant amounts of homologues having very short and / or very long polyoxyethylene chains and of which the properties are far away from those having the optimized length of the hydrophilic chain. In recent years, a number of papers have shown th...
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