Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
Volume 77 , Issue 6
Showing 1-5 articles out of 5 articles from the selected issue
  • Akira OKADA, Akiko KATAYAMA, Hideo MATSUI, Seishiro ITO, Masakuni YOSH ...
    2004 Volume 77 Issue 6 Pages 253-257
    Published: June 20, 2004
    Released: November 20, 2012
    JOURNALS FREE ACCESS
    To construct novel high functional compound materials, novel hybrid copolymers having alternating covalentbonded organic moieties-magnesium frameworks were prepared by the reaction of magnesium ethoxide with such diols as hydroquinone, 4, 4'-dihydroxybiphenyl, bis (4-hydroxyphenyl) sulfide, and bis (4-hydroxyphenyl) sulfone and their properties were examined.
    The color of the hybrid copolymer having the phenylene (-C6H4-) moiety was found to change from colorless to green in an atmosphere of oxygen, and the copolymer was suggested to have the ability of oxygen adsorption and activation.
    Thus, the UV-VIS and ESR spectra of the copolymer having the phenylene moiety were taken in an atmosphere of oxygen. The UV-VIS spectra showed an absorption maximum at 600 nm whose intensity increased with the passage of time. The ESR spectra showed a peak at 337.0mT due to an organic free electron which may be caused through an electron transfer from the phenylene moiety to the magnesium atom by an adsorption of molecular oxygen. Spin-trapping method was used to evaluate the activated oxygen species. As a result, the specific signals due to both the hydroxy and hydroperoxy radicals were observed. These results suggested that the hybrid copolymer with the phenylene moiety has the ability of the oxygen adsorption and activation. The reaction of acetaldehyde with the hybrid copolymer in an air atmosphere showed the decrease of the acetaldehyde concentration with time, indicating that the hybrid copolymer has the oxidation catalysis ability.
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  • Masashi SHIBATA, Kensuke YOSHIDA, Yasushi ITOH, Genichi NAKAMURA, Hito ...
    2004 Volume 77 Issue 6 Pages 258-263
    Published: June 20, 2004
    Released: November 20, 2012
    JOURNALS FREE ACCESS
    Novel branched waxes, which are composed of polyethylene chain and dimethylsiloxane dimmer (branch unit) was developed, and their effect on the hardness of oil wax gel was examined.
    Among the branched waxes, a center-branched type, named ESE, improved the gel hardness dramatically when blended with n-paraffin. This may be because that ESE can make the wax crystal in the gel smaller without decreasing the wax crystallinity. By using ESE, the total amount of wax in a lipstick was decreased by 30% without spoiling the stick toughness, which resulted in lipsticks with glossy application and smooth texture.
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  • Eiichi TSURUTA
    2004 Volume 77 Issue 6 Pages 264-282
    Published: June 20, 2004
    Released: November 20, 2012
    JOURNALS FREE ACCESS
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  • Liyuan HAN
    2004 Volume 77 Issue 6 Pages 283-288
    Published: June 20, 2004
    Released: November 20, 2012
    JOURNALS FREE ACCESS
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  • Kunio FURUSAWA
    2004 Volume 77 Issue 6 Pages 289-294
    Published: June 20, 2004
    Released: November 20, 2012
    JOURNALS FREE ACCESS
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