Ammoniacal borate and zinc compositions, and methods for treating wood products
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United States of America Patent
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Jun 16, 2009
Grant Date -
Jul 10, 2008
app pub date -
Mar 31, 2005
filing date -
Apr 3, 2004
priority date (Note) -
Expired
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Abstract
Compositions and methods are provided for treating wood products to provide leach-resistant protection against fungal decay, termites and other wood destroying organisms. The preservative compositions provided include ammonia-stabilized solutions of zinc and boron, preferably in a molar ratio of Zn:B of between about 0.4:1 and 5:1, and are essentially copper free. The preservative may be applied by vacuum and/or pressure treatment or dip treatment under atmospheric pressure.
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