Composition for wood treatment comprising an injectable aqueous wood preservative slurry having sparingly-soluble biocidal particles and pigments
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United States of America Patent
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Issued Date -
Dec 3, 2009
app pub date -
May 17, 2005
filing date -
May 17, 2004
priority date (Note) -
Abandoned
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Abstract
An aqueous wood-injectable particular-based wood preservative comprising: 1) dispersants in an amount sufficient to maintain biocidal particles in a stable slurry; 2) injectable sub-micron biocidal particles comprising a solid phase of at least one of a sparingly soluble organic biocide, a sparingly soluble copper salt, copper(I)oxide, a sparingly soluble zinc salt, zinc oxide; a sparingly soluble nickel salt; and a sparingly soluble tin salt, wherein less than 2% by weight of the biocidal particles have an average diameter greater than 1 micron, and at least 20% by weight of the biocidal particles have an average diameter greater than 0.08 microns; and 3) at least one pigment particle or dye in an amount sufficient to impart a discernable color or hue to the wood, when compared to wood treated with the same particulate system but without the pigment.
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