MOKUZAI HOZON (Wood Protection)
Online ISSN : 1884-0116
Print ISSN : 0287-9255
ISSN-L : 0287-9255
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Volume 19, Issue 6
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1993 Volume 19 Issue 6 Pages 262-271
    Published: November 25, 1993
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.19.262
    JOURNAL FREE ACCESS
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  • Wood Preservative Effectiveness of Metallic Naphthenates (1)
    Laboratory Evaluation of the Chemicals as Fungicidal and Termiticidal Agents
    Kunio TSUNODA, Makoto SAKURAI
    1993 Volume 19 Issue 6 Pages 272-280
    Published: November 25, 1993
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.19.272
    JOURNAL FREE ACCESS
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    A series of metallic naphthenates were tested for their fungicidal and termiticidal effectiveness in the laboratory. Copper naphthenate peformed better than zinc naphthenate in wood decay control.
    In vacuum/soak impregnation treatment [JIS A 9301 (1976)], copper and zinc naphthenates could satisfactorily depress decay fungi at retentions of 0.5 and 1.0 kg/m3 as an elemental metal, respectively [JIS A 9302 (1976) ]. The former chemical proved effective in protecting timber from decay at 2.1kg/m3 even after the recently amended severer leaching schedules [JIS A 9201 (1991)]. When applied to brush treatment, copper naphthenate was effective at 2% Cu and 3%Cu concentrations, respectively after weathering of JWPA Standard 1 (1979) and the severer weathering [amended JWPA Standard 1 (1989) ], while zinc naphthenate did not perform well even at 4%Zn after the new weathering scheme. Noticeable effects of acid values were not shown for copper naphthenates, but for zinc naphthenates in brush application.
    As for the termiticidal effects of the test chemicals, copper naphthenate was efficacious at 1% Cu in wood block test [JWPA Standard 11 (1) (1981)] in which pine sapwood blocks treated with the chemicals by brushing were exposed to Formosan subterranean termites for three weeks. Zinc compounds were less effective, and 2%Zn was required to control termite attacks.
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  • [title in Japanese]
    [in Japanese]
    1993 Volume 19 Issue 6 Pages 281-287
    Published: November 25, 1993
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.19.281
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1993 Volume 19 Issue 6 Pages 288-291
    Published: November 25, 1993
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.19.288
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1993 Volume 19 Issue 6 Pages 292-294
    Published: November 25, 1993
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.19.292
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1993 Volume 19 Issue 6 Pages 295-297
    Published: November 25, 1993
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.19.295
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1993 Volume 19 Issue 6 Pages 298-303
    Published: November 25, 1993
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.19.298
    JOURNAL FREE ACCESS
    Download PDF (428K)
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