Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
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Volume 57, Issue 10
Displaying 1-4 of 4 articles from this issue
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  • Dispersability of Pigments in Aqueous Solutions of Anionic Oligosoaps
    Synthesis of Anionic Oligosoaps having Dye Structures and their Properties
    Shigeru SUZUKI, Yutaka ISHIGAMI, Kenji TAKEMOTO
    1984Volume 57Issue 10 Pages 541-546
    Published: October 20, 1984
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.57.541
    JOURNAL FREE ACCESS
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    Fluorescent anionic oligosoaps were prepared by saponifying the condensing products of maleic anhydride-C2-C12 alkylvinylether cooligomers (n : several tens) and resorcinol. Their various surface activities and dispersing action were studied on the aqueous solutions or suspensions. These oligosoaps exhibited a remarkable surface tension lowering property, low-foaming property, and a large dispersing action for the particles of phthalocyanine pigment. Further it was ascertained that the binding of oligosoap onto the pigment surface caused the deviation towards lower wavelengths at the maximum fluorescent intensity as compared with aqueous oligosoap solutions. These surface active properties of the oligosoaps may be attributed to a bulky, rigid and rather hydrophobic structure of dye groups, besides the essential surface active groups of alkylether groups and carboxylic groups of the oligosoaps.
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  • Catalytic Activity of Pigments (VI)
    Hydrocarbons Decomposition by Hydrated Chromium Oxide (III)
    Yoshikazu SOYAMA, Kiyoshi NAKAMURA, Hiroshi FUKUI, Muneo TANAKA
    1984Volume 57Issue 10 Pages 547-551
    Published: October 20, 1984
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.57.547
    JOURNAL FREE ACCESS
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    The relationship between decomposition products of hydrocarbons containing hydrated chromium oxide (III) and change of odor was examined under accelerated oxidation test.
    Decomposition products trapped during the procedure were separated to acid and neutral components. Each component was identified by gas chromatograph-mass spectrum. Acid component was consisted of C2-C10 saturated fatty acids. Hydrocarbons, aldehydes and ketones were found in neutral component.
    The characteristic of an odor from acid component produced by accelerated oxidation test was similar to that produced at room temperature.
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  • The Surface Characterization Effect of Steel for Automobile Relating to Zinc Phosphating Property
    Noboru SATOH
    1984Volume 57Issue 10 Pages 552-557
    Published: October 20, 1984
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.57.552
    JOURNAL FREE ACCESS
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    Regarding the zinc phosphating property on steel surface side of One-side Electrolytic Galvanized Steel (EG) and One-side Pre-Coated Steel (PC) for Automobile, surface characterization effect was studied.
    In case of EG, though the zinc concentration on steel surface influences the zinc phosphatability, the electrochemical treatment of zinc removal is valid for good phosphating.
    In case of PC, steel surface receives the hysteresis in the zinc-rich primer baking process, so that it influences the zinc phosphatability. However, the certain surface preparation will improve the phosphatability of the surface as the same level as cold rolled steel. There is an exceptional PC which shows the good phosphatability without surface preparation. This phenomenon will be owing to the Ni component as surface characterization.
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  • Colour Measurement
    Kiyoshi CHAKI
    1984Volume 57Issue 10 Pages 558-568
    Published: October 20, 1984
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.57.558
    JOURNAL FREE ACCESS
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