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 69, Issue 6
Displaying 1-7 of 7 articles from this issue
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  • Lubrication Characteristics of Novel Fluorosilicone Oligomers
    Kenji MATSUDA, Junpei NAKAGAWA, Katsuhiro NISHIYAMA, Hiroshi NOMIYAMA, ...
    1996 Volume 69 Issue 6 Pages 361-369
    Published: June 20, 1996
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.69.361
    JOURNAL FREE ACCESS
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    Novel fluorosilicone oligomers with different fluorooxaalkyl groups and siloxane-pendant chain lengths have been synthesized by the reactions of vinyl-group-containing poly (dimethylsiloxane) s with fluorinated organic peroxides, and their frictional properties have been investigated. Addition of these fluorosilicone oligomers reduced the friction coefficients of liquid paraffin remarkably. The ability of the fluorosilicone oligomers to reduce friction coefficient is fairly dependent on the siloxane chain lengths while almost independent of the fluorooxaalkyl chain lengths. The reduction effects of friction coefficients are found to be strongly related to the activation energy for viscosity calculated from the Andrade equation.
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  • Nickel Coating onto Glass Flakes
    Seishiro ITO, Shigeki SASAKI, Kuniyuki KIMATA, Mitsunobu IWASAKI, Teru ...
    1996 Volume 69 Issue 6 Pages 370-377
    Published: June 20, 1996
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.69.370
    JOURNAL FREE ACCESS
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    Nickel-coated glass flakes with enough luster was prepared by reduction of [Ni (acac) 2] to metallic nickel in DMSO containing (NH2) 2·H2O. Glass flakes were not sufficiently coated with nickel when anisole was used as a solvent, and didn't have enough luster. Nickel-coated glass flakes prepared in DMSO, on the other hand, gave enough luster.
    Nickel was heterogeneously precipitated on glass flakes since (NH2) 2·H2O is insoluble in anisole, while nickel was homogeneously coated onto glass flakes in DMSO because (NH2) 2·H2O is soluble. Fine nickel particles were covered onto the surface of glass flakes. The surface of the coated nickel in DMSO was smooth and its thickness was uniform. Nickel-coated glass flakes with sufficient luster were not obtained by using water, ethanol and N, N-dimethylformamide as solvents.
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  • Characteristics of Isocyanurate Polyisocyanate Derived from Hexamethylene Diisocyanate and Their Use
    Mitsuo KASE, Mitsuru OOTSUBO, Yoichi TANIMOTO, Noboru OKOSHI
    1996 Volume 69 Issue 6 Pages 378-388
    Published: June 20, 1996
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.69.378
    JOURNAL FREE ACCESS
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    Properties of three kinds of isocyanurate polyisocyanates, of which molecular weights and distributions of oligomers with isocyanurate ring were different, were studied. The isocyanurate polyisocyanates showed excellent solubility in nonpolar hydrocarbon solvent, but poor compatibility with acrylic polyol compared with biuret and adduct polyisocyanates.
    The reactions of isocyanurate polyisocyanates with acrylic polyols and the properties of the resulting films were examined in detail. Glass transition temperatures of the films, produced in equivalent ratio of isocyanurate polyisocyanates and acrylic polyols at room temperature under dry condition, were almost identical regardless of their molecular weights and distribution of oligomers with isocyanurate ring. The initial modulus of films produced from isocyanurate polyisocyanates with acrylic polyols in the presence of dibutyltindilaurate as a catalyst were greater than those other of the polyisocyanates.
    It is expected that the nonpolar solvent system based on two-component polyurethane resin using isocyanurate polyisocyanate easily gives the network polymer restrained the formation of urea linkage as a side reaction.
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  • The Effects of Carbon Black Properties and Dispersion on Jetness and Undertone
    Rodney L. Taylor, Shin ONODERA
    1996 Volume 69 Issue 6 Pages 389-395
    Published: June 20, 1996
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.69.389
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  • Pearlescent Pigment for Car Paint Use and its Movement
    Katsuhisa NITTA
    1996 Volume 69 Issue 6 Pages 396-404
    Published: June 20, 1996
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.69.396
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  • Introduction to Understand Physical Properties of Coatings (IX) Design for Coating System on Leather (III)
    Keigo KINOSHITA, Minoru TSUBOTA
    1996 Volume 69 Issue 6 Pages 405-412
    Published: June 20, 1996
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.69.405
    JOURNAL FREE ACCESS
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  • Electron Spin Resonance
    Takahiro TSUJITA, Shingo OKAMOTO
    1996 Volume 69 Issue 6 Pages 413-421
    Published: June 20, 1996
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.69.413
    JOURNAL FREE ACCESS
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