Journal of Synthetic Organic Chemistry, Japan
Online ISSN : 1883-6526
Print ISSN : 0037-9980
ISSN-L : 0037-9980
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Volume 18, Issue 9
Displaying 1-6 of 6 articles from this issue
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  • Polymerization of Ethylene and Properties of its Polymer
    Akira TAKAHASHI
    1960 Volume 18 Issue 9 Pages 624-635
    Published: September 01, 1960
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.18.624
    JOURNAL FREE ACCESS
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  • Newly Developed Methods of the Synthesis of Acrylonitrile Monomer
    Haruo SAGAWA
    1960 Volume 18 Issue 9 Pages 636-643
    Published: September 01, 1960
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.18.636
    JOURNAL FREE ACCESS
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  • Studies on the Synthesis of o-Xylele-3-and 4-sulfonic Acids and their Equilibrium
    Yoshihiro MURAMOTO
    1960 Volume 18 Issue 9 Pages 644-651
    Published: September 01, 1960
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.18.644
    JOURNAL FREE ACCESS
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    o-Xylene-4-sulfonic acid prepared by sulfonation of o-Xylene at 100°C was purified.3-Sulfonic acid was synthesized by reduction, Gattermann reaction, chlorination and hydrolysis from 3-nitro-o-Xylene.
    The melting points of 3-and 4-sulfonic acid-S-benzyl-thiuronium salts prepared by usual method, were 147°C and 210.5°C, respectively.
    The melting points of their mixture in various proportion were determined. The eutectic point was 137.6°C and eutectic mixture was consisted of about 10% of 3-acid and 902/s of 4-acid.
    The ratios on the yields of 3- and 4-acids obtained by sulfonation of o-Xylene with conc.sulfuricacid were determined by use of melting point curve.
    The yield of 3-acid depended on the temp.and was not accelerated by catalyser.I studied on the equilibrium of 3-acid k1⇔k2 4-acid, as 3-acid can be transformed by heating in the mixture of sulfuricacid and a small amount of water.
    When barium 3-sulfonate (0.001 mol) in 3 cc.of sulfuricacid (d: 1.656) was heatedbetween 80 and 100°C, a reversible first order reaction kt=t (k1+k2) =lnXe/(Xe-X) was done and the following results were obtained:
    The activation energies of k1 and k2 were 30 kcal/mol., respectively.Log k was proportional to the acidity function (Ho) and the tangent was about 0.68, wbe the same reaction was done at 100° by change of sulfuricacid concentration.
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  • Studies on the Production of Formaldehyde from Methanol III
    Pilot-plant test on the formaldehyde production process using spray cooling method
    Saburo YAMAUCHI
    1960 Volume 18 Issue 9 Pages 652-655
    Published: September 01, 1960
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.18.652
    JOURNAL FREE ACCESS
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    The preceeding report indicated that the best method of suppressing the side reaction in the manufacture of formaldehyde from methanol was a direct spraying of cooling fluid on the bottom of catalyst layer.The problem whether or not the formaldehyde absorbed solution can be used as a cooling spray fluid has been investigated.
    Namely, the formaldehyde absorbed solution was applied on a pilot plant for manufacturing of 37% formaldehyde solution with a capacity 1 ton/day as a cooling fluid and studied the effect of increasing concentration of formaldehyde from a pure water. The result indicated that it was as effective as the pure water until the formladehyde content reached up to 37%. There was an agreement in experimental and theoretical yields within the variation of 1%.
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  • Ultraviolet Absorbent
    Zen-sichi YOSHIDA
    1960 Volume 18 Issue 9 Pages 656-663
    Published: September 01, 1960
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.18.656
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  • [title in Japanese]
    Hideo YAGUCHI
    1960 Volume 18 Issue 9 Pages 664-666
    Published: September 01, 1960
    Released on J-STAGE: October 20, 2010
    DOIhttps://doi.org/10.5059/yukigoseikyokaishi.18.664
    JOURNAL FREE ACCESS
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