1, 2-エポキシアルカンを中間体とする新しい非イオン界面活性剤の合成とその物性

概要

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Among α-olefins which came into massproduction recently, longer ones containing 1218 carbons have been widely employed as raw materials for surface active agents, but middle sized ones containing 410 carbons, unavoidable byproducts, are not sufficiently utilized yet. Using these middle-sized α-olefins, the authors synthesized 64 kinds of nonionic samples as follows.<BR>_??_<BR>Thus synthesized nonionics have excellent penetrating ability and those containing 10 or 12 carbons in R and R were better penetrants than Aerosol type one and were far better than nonionic penetrant from lauryl alcohol on sale. They also showed low foamability.<BR>The correlation between the structure of the nonionics and their penetrating ability was discussed in detail. Logarithmic plots of sinking time of testing cloth vs. molar concentration indicated an almost straight line, whose gradient was dependent on the number of carbons contained in R and R, and not upon the length of hydrophilic oxyethylene group.<BR>Authors made another attempt in discussing the effects of the position of hydrophilic group attached and of branching in lipophiles, and it was recognized that their penetrating ability is much influenced by these factors.
社団法人日本油化学会の論文