s-アルコールのエチレンオキシド付加物の合成

概要

論文の詳細を見る
Using the s-alcohols having a carbon range C12C14 prepared from available technical paraffins (C12C14), a technically effective synthetic method for obtaining highly purified s-alkyltri (oxyethylene) ethers using a BF3 catalyst was developed. To prepare s-alkyl tri (oxyethylene) ethers, about 1.5 mol of EO were added to the alcohol and as a result, unreacted alcohols were recovered by distillation. The recovered alcohols were recycled after purification by a newly developed ketone elimination method, in which esterification for the first portion of recovered alcohols with boric acid was carried out followed by separation of carbonyl compounds present in the alcohols by distillation. s-Alkyl tri (oxyethylene) ethers were continuously obtained with consistently excellent quality, containing no unreacted alcohols. The bad odor of s-ethylene oxide adducts of s-alkohol was thus shown to be due to the accumulation of carbonyl compounds such as ketone or diketone. In this study, a mechanism for the formation of by-product of PEG is also discussed.
社団法人日本油化学会の論文
1993-02-20