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 60, Issue 7
Displaying 1-4 of 4 articles from this issue
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  • Antifouling Performance and Hydrolysis of Organotin Polymers
    Kazunobu TAKAHASHI, Yoshihiko OHYAGI
    1987 Volume 60 Issue 7 Pages 375-380
    Published: July 20, 1987
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.60.375
    JOURNAL FREE ACCESS
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    In order to clarify the antifouling performance and hydrolysis mechanism of organotin polymers, seven copolymers involving tributyltin methacrylate (TBTMA) and methyl methacrylate (MMA) have been synthesized with variable TBTMA content of 6-52 mol%. The structure of the organotin polymers was investigated by the analysis of tin, infrared spectroscopy (IR) and gel permeation chromatography (GPC). The leaching rates (L. R.) of tributyltin (TBT) from the organotin polymer films into seawater were determined by gas chromatography equipped with an electron-capture detector (ECD-GC), so that the leaching rate of TBT increased remarkably from more than 25 mol% of TBTMA content in copolymer due to steric hindrance of TBT. The antifouling performance of the prepared copolymers was tested at Hiroshima Bay. Tributyltin methacrylate-methyl methacrylate copolymers with TBTMA content of 28.6 mol% exhibited the highest antifouling potential for more than 24 months.
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  • Photodegradation of Organotin Polymers by Ultraviolet Light
    Kazunobu TAKAHASHI, Yoshihiko OHYAGI
    1987 Volume 60 Issue 7 Pages 381-386
    Published: July 20, 1987
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.60.381
    JOURNAL FREE ACCESS
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    The photodegradation mechanism of organotin polymers such as methyl methacrylate (MMA) -tributyltin methacrylate (TBTMA) copolymer by irradiation with ultraviolet light have been studied. For ultraviolet light irradiation was used Fadeometer (Model : Mitsubishi MH-1, high pressure mercury vapour lamp : H 400-F, main wavelength : 365 nm, intensity : 8.68×103 μW/cm2). After irradiation, the leaching rate (L. R.) of tributyltin (TBT) from polymer films and infrared spectrum of organotin polymer films were determined by gas chromatography equipped with an electron-capture detector (ECD-GC) and Fourier-transform infrared spectroscopy (FT-IR), respectively. As the results, the leaching rate of TBT and antifouling performance of polymer film were decreased remarkably by irradiation with ultraviolet light. Therefore, it was concluded that tributyltin of organotin polymer was decomposed in to dibutyltin compound. The photodegradation mechanism of organotin polymer was considered to be : o=c=o-Sn-Bu-Bu-Bu c-o-o-Sn-Bu-Bu c-o-o-Bu-Sn-Bu-o-o-c
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  • Oxidation of Unsaturated Fatty Acids with Colors
    Minoru NAGAKURA
    1987 Volume 60 Issue 7 Pages 387-393
    Published: July 20, 1987
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.60.387
    JOURNAL FREE ACCESS
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  • Flow Properties of Printing Inks
    Isao UCHIZAWA
    1987 Volume 60 Issue 7 Pages 394-401
    Published: July 20, 1987
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.60.394
    JOURNAL FREE ACCESS
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