On the Surface Activity of Addition Polymers of Tall Oil and Ethlene Oxide

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  • トール油とエチレンオキシドの付加重合物に関する界面活性性状について
  • トールユ ト エチレンオキシド ノ フカジュウ アイモノ ニ カンスル カイメン カッセイ セイジョウ ニ ツイテ

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Abstract

Polyoxyethylene derivatives of tall oil were prepared by addition polymerization of 475 moles ethylene oxide with tall oil in the presence of caustic alkali as catalyst. <BR>Tall oil added with less than 17 moles of ethylene oxide was yellowish brown and viscous liquid, and that with more than 17 moles was light yellow solid. <BR>In order to discuss the relation between the surface activity and mole numbers of ethyene oxide added, the surface activity (surface tension, foaming power, foam stability, penetrating power, lanolin number and washing efficiency) of the products was measured on various concentration (0.051.0%) of aqueous solution. <BR>The products with 46 moles of ethylene oxide were suitable as emulsifying or dispersing agent for wool fat. The products with 1625 moles of ethylene oxide indicated high foaming power and good foam stabilty and were excellent detergents for cotton.

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