Preparation of Addition Polymerisates of Ethyleneoxide to p-Hydroxybenzoicamide and Their Surface Active Properties

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  • NEGORO Kenji
    Department of Applied Chemistry, Faculty of Engineering, Hiroshima University
  • SUMIMURA Kenji
    Department of Applied Chemistry, Faculty of Engineering, Hiroshima University

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Other Title
  • エチレンオキシドのp-ヒドロキシ安息香酸アミドへの付加重合体の合成とその界面活性
  • エチレンオキシド ノ p-ヒドロキシ アンソクコウサン アミド エ ノ フカ ジュウゴウタイ ノ ゴウセイ ト ソノ カイメン カッセイ

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The reactions of ethyleneoxide (EO) with p-hydroxybenzoicamide and benzoicamide were carried out in the presence of small amounts of NaOH as a catalyst at 80°C in an autoclave. In order to remove polyethylene-oxide by product and to reduce the width of molecular weight distribution of addition polymerisates of EO, the gel-filtration and counter current distribution extraction were carried out. These seperated samples (F.) were analysed by thin layer chromato-graphy, infrared spectroscopy and nuclear magnetic resonance (NMR). Then, the average chain length of the EO units of all F was calculated from the peak area in NMR diagram. Every fractions having 0 to 18 of EO units existed in nearly equal amounts in the products. The physico-chemical measurements of the aqueous sample solution, such as specific gravity, relative viscosity, surface tension as well as the test of emulsification and wettability were carried out.<BR>From the above experiments, it was made clear that all above samples were inferior as nonionic surfactant.

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