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 64, Issue 11
Displaying 1-7 of 7 articles from this issue
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  • Syntheses and Properties of Chalcone Derivatives
    Ayashi NOGUCHI, Yuzo KATO, Shigeo YASUI
    1991 Volume 64 Issue 11 Pages 677-681
    Published: November 20, 1991
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.64.677
    JOURNAL FREE ACCESS
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    In order to develop new UV light absobers used for the photoresist, eleven chalcones were synthesized and their characteristics were studied. It was found that the chalcone derivatives with weak donors, such as alkoxyl and/or hydroxyl groups, were useful as absorbers of i-line (365nm) of Hg lamp. Especially those with hydroxyl groups were useful for the positive type photoresist because they were soluble in alkaline water.
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  • Studies on Phthalocyanine Type Compounds (Part IX)
    Hydrogen Treatment of Metal-free Phthalocyanine and Its Stability
    Keiichi SAKAMOTO, Fukumatsu SHIBAMIYA
    1991 Volume 64 Issue 11 Pages 682-686
    Published: November 20, 1991
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.64.682
    JOURNAL FREE ACCESS
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    Metal-free phthalocyanines (H2-PCs) were subjected to a hydrogen treatment in the same manner as hydrogenation or hydrocracking. A mechanism of hydrogen holding on phthalocyanine type compounds was examined by X-ray photoelectron spectroscopy (XPS) and proton magnetic resonance (NMR) spectroscopy. From C 1 s and N1 s XPS spectra of H2-PCs, the tetrabenzoporphyrazine underwent a chemical change during the hydrogen treatment. Hydrogens were held at the β sites of phenylene rings in H2-PC, which was confirmed by NMR spectra. By the hydrogen treatment, H2-PC was transformed into a or α-like crystal form and then fused through an amorphous state.
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  • Studies on Phthalocyanine Type Compounds (Part X)
    Stability of Iron Phthalocyanine under Hydrogen Atmosphere
    Keiichi SAKAMOTO, Yoshinari KOYAMA, Fukumatsu SHIBAMIYA
    1991 Volume 64 Issue 11 Pages 687-689
    Published: November 20, 1991
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.64.687
    JOURNAL FREE ACCESS
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    We have studied the stability of iron phthalocyanines (Fe-PCs), which possess a catalytic activity for various reactions, under hydrogen atmosphere. Fe-PC, which had a lower thermal stability, fused rapidly at between 300 and 380°C. Being heated under a hydrogen atmosphere, Fe-PC absorbed hydrogens into the molecule. The heated Fe-PC was converted from β crystal forms to α with increasing temperature. These phenomena differed depending on the coordination number of iron in Fe-PC.
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  • Effect of Wave Form of Power Source on Electrolytic Coloring of Titanium
    Takashi ONAKA, Seisirô ITÔ, Shin-ichi ISHIDA, Jiro SHIOKAW ...
    1991 Volume 64 Issue 11 Pages 690-695
    Published: November 20, 1991
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.64.690
    JOURNAL FREE ACCESS
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    Effect of the wave form of the power source on anodic oxidation (electrolytic coloring) of titanium using a bath containing H3PO4, H2SO4, and H2O2 with or without Al2(SO4)3 or CoSO4 was studied. As the wave forms of the power source, a complete flat wave and uncomplete rectified waves, such as single-phase half-wave, two-phase half-wave, three-phase half-wave and six-phase half-wave, were used.
    As a result, colored thick films obtained from using the uncomplete rectified wave forms in a short time were more uniform and clearer than these obtained from using the complete flat wave form. This reason is as follows ; the electrolysis using the uncomplete rectified wave forms is equal to that with high current density over 10 A/dm2, because the voltage and the current of the uncomplete rectified wave forms have high peak value. Also the spark discharges of the uncomplete rectified wave forms occur smoothly because their currents are intermittent. The thickness, the color and the surface of the film obtained from using the uncomplete rectified wave forms are decided by the peak voltage.
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  • Intelligent Paper in Specialty Paper ; Part 1
    Toshihiko ISHIKAWA, Yoshiaki ISHINO, Yoshiharu OKAMOTO
    1991 Volume 64 Issue 11 Pages 696-701
    Published: November 20, 1991
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.64.696
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  • Intelligent Papers in Specialty Papers ; Part 2
    Toshihiko ISHIKAWA, Yuji KIMURA, Haruki WAKEBE
    1991 Volume 64 Issue 11 Pages 702-709
    Published: November 20, 1991
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.64.702
    JOURNAL FREE ACCESS
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  • Phenolic Resins
    Fumio TASHIRO
    1991 Volume 64 Issue 11 Pages 710-718
    Published: November 20, 1991
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.64.710
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