Journal of Japan Oil Chemists' Society
Online ISSN : 1884-2003
ISSN-L : 0513-398X
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Volume 15, Issue 6
Displaying 1-6 of 6 articles from this issue
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  • Peroxide Radicals and ESR
    Kazuo SOMENO
    1966 Volume 15 Issue 6 Pages 245-251
    Published: June 20, 1966
    Released on J-STAGE: October 20, 2009
    DOIhttps://doi.org/10.5650/jos1956.15.245
    JOURNAL FREE ACCESS
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  • Reaction between Alcohols and Amines. V.
    Reaction between Oleylalcohol and Triethylamine
    Kikuo TAKEHARA, Shigeaki OKAZIMA, Susumu NAGAO, Toshio AGAWA, Saburo K ...
    1966 Volume 15 Issue 6 Pages 252-257
    Published: June 20, 1966
    Released on J-STAGE: October 20, 2009
    DOIhttps://doi.org/10.5650/jos1956.15.252
    JOURNAL FREE ACCESS
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    In order to obtain higher alkyldiethylamines, which are used as the raw material of various cationic surfactants, reaction between oleylalcohol and triethylamine was carried out using Cu-Cr-O (modified by MnO2) catalyst under moderate pressure.
    The reaction conditions which gave the best yield of 76% were following :
    Mole ratio of oleylalcohol : triethylamine= 1 : 5
    Weight % of the catalyst to alcohol : 15%
    Initial hydrogen pressure : 20 kg/cm2
    Max. reaction pressure : ca. 45 kg/cm2
    Reaction temperature : 250
    Reaction time : 3 hr
    Catalyst and triethylamine reoveries were also inveatigated and obtained good results.
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  • Reaction of Ethylene Oxide With Active Hydrogen. II.
    Reaction of Ethylene Oxide with Water
    Masayuki MIKI, Teruhiko ITO, Hajime OUCHI, Fumio MORIYA, Hiroo TSUCHIY ...
    1966 Volume 15 Issue 6 Pages 257-262
    Published: June 20, 1966
    Released on J-STAGE: October 20, 2009
    DOIhttps://doi.org/10.5650/jos1956.15.257
    JOURNAL FREE ACCESS
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    The reaction of ethylene oxide with water covering wide ethylene oxide concentration (1.75 to 16.1 mol/l) was investigated.
    The reaction is shown as a consecutive competitive reaction including the following reactions;
    H2O+C2H4O_??_HOC2H4OH
    HOC2H4OH+C2H4O_??_HOC2H4OC2H4OH
    HOC2H4OC2H4OH+C2H4O_??_HOC2H4OC2H4OC2H4OH
    where the reactions are first order to each reactant, and the second order rate constant k1 is
    k1_??_ 1/2k2_??_1/2k3=2.88×105a0 exp (-21, 100/RT).
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  • Studies on Sodium Alkylbenzenesulfonates. V.
    Concentrations of Sulfonating Agent and Relative Reaction Rates of Dodecylbenzenes
    Yasushi KIMURA, Syuhei TANIMORI, Terunosuke SHIMO
    1966 Volume 15 Issue 6 Pages 262-267
    Published: June 20, 1966
    Released on J-STAGE: October 20, 2009
    DOIhttps://doi.org/10.5650/jos1956.15.262
    JOURNAL FREE ACCESS
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    In the preceeding paper the authors reported a pronounced selectivity owing to the steric hindrance of the alkyl chain in the sulfonation of higher mono-alkylbenzenes with 20% oleum at 18.
    The present paper deals determination of the correlation between concentration of sulfonatiog agent and the structure of dodecylbenzenes in the selectivity of the sulfonation.
    The effect of dilution of sulfonating agent is increased as the position of aromatic nucleus locates toward the center of the alkylchain. When the nucleus moves from the second position to the center in the chain, the relative sulf onation rate by 95.5% sulfuric acid decreases from 10% to 25% in comparison with those by sulfur trioxide.
    Distribution of ortho and para isomers was also determined by infrared spectrography. The distribution in n-alkylbenzenesulf onic acid, sulfonated with 3.2 moles of 20% oleum at low temperature, was about 25% ortho and 75%, para. And in the sulfonation at 50°C it was about 21% ortho and 79%, para.
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  • Studies on the Solubilization of Essential Oils by Nonionic Surfactants
    Kazutoshi KENJO
    1966 Volume 15 Issue 6 Pages 267-277
    Published: June 20, 1966
    Released on J-STAGE: October 20, 2009
    DOIhttps://doi.org/10.5650/jos1956.15.267
    JOURNAL FREE ACCESS
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    Author studied the states of dissolution in the ternary system consisting of polyoxyethylene nonylphenyl ether different in the degree of ethylene oxide polymerization, essential oil different in polarity, and water.
    When such ternary system is heated starting from turbid heterogeneous phase, it turns into transparent homogeneous phase then reaches again claud point on further heating. Author obtained diagrams of dissolution states of the system by the measurement of transparent point and claud point and the plotted curves deviled the diagram into three regions; the first heterogeneous phase system above the claud point curve; the second homogeneous (solubilized) phase system; and the third heterogeneous phase system below the transparent point curve. From the diagram, minimum concentration of each surfactant required (required concentration) for the solubilization of each essential oil at any temperature was obtained, and it showed a smallest value in the system of the intermediate n (degree of polymerization of ethyleneoxide) which is the optimum solubilizer. n, HLB and the required concentration of the optimum solubilizer between 0 and 40 can be easily found from the diagram.
    Optimum value of HLB obtained increased with increase of the polarity of essential oil.
    Effect of ethanol addition to the ternary system was also discussed.
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  • [title in Japanese]
    1966 Volume 15 Issue 6 Pages 283-289
    Published: June 20, 1966
    Released on J-STAGE: October 20, 2009
    DOIhttps://doi.org/10.5650/jos1956.15.283
    JOURNAL FREE ACCESS
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