Particulate wood preservative and method for producing same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A01N-025/00
A01N-059/00
A01N-059/20
A01N-025/02
A01N-059/16
A01N-025/04
A01N-025/08
A01N-025/12
C09D-005/14
A01N-033/00
A01N-033/26
A01N-043/00
A01N-029/10
A01N-031/08
A01N-031/14
A01N-057/00
A01N-057/06
A01N-057/10
A01N-057/14
A01N-057/16
출원번호
US-0226484
(2014-03-26)
등록번호
US-9314030
(2016-04-19)
발명자
/ 주소
Richardson, H. Wayne
Hodge, Robert L.
출원인 / 주소
Koppers Performance Chemicals Inc.
대리인 / 주소
Covington & Burling LLP
인용정보
피인용 횟수 :
0인용 특허 :
143
초록▼
A wood preservative includes injectable particles comprising one or more sparingly soluble copper salts. The copper-based particles are sufficiently insoluble so as to not be easily removed by leaching but are sufficiently soluble to exhibit toxicity to primary organisms primarily responsible for th
A wood preservative includes injectable particles comprising one or more sparingly soluble copper salts. The copper-based particles are sufficiently insoluble so as to not be easily removed by leaching but are sufficiently soluble to exhibit toxicity to primary organisms primarily responsible for the decay of the wood. Exemplary particles contain for example copper hydroxide, basic copper carbonate, copper carbonate, basic copper sulfates including particularly tribasic copper sulfate, basic copper nitrates, copper oxychlorides, copper borates, basic copper borates, and mixtures thereof. The particles typically have a size distribution in which at least 50% of particles have a diameter smaller than 0.25 μm, 0.2 μm, or 0.15 μm. At least about 20% and even more than 75% of the weight of the particles may be composed of the substantially crystalline copper salt. Wood or a wood product may be impregnated with copper-based particles of the invention.
대표청구항▼
1. An aqueous wood preservative slurry, herein said slurry comprises a plurality of injectable first particulates of a solid copper compound, wherein the first particulates have a d96 of about 1 micron or less, a d99 of about 1.5 microns or less, and a d50 of greater than 0.02 microns. 2. The aqueou
1. An aqueous wood preservative slurry, herein said slurry comprises a plurality of injectable first particulates of a solid copper compound, wherein the first particulates have a d96 of about 1 micron or less, a d99 of about 1.5 microns or less, and a d50 of greater than 0.02 microns. 2. The aqueous wood preservative slurry of claim 1, wherein the d50 is between about 0.05 microns and about 0.5 microns. 3. The aqueous wood preservative slurry of claim 1, wherein the d50 is between about 0.1 microns and about 0.3 microns. 4. The aqueous wood preservative slurry of claim 1, wherein the copper compound is selected from the group consisting of copper borate, basic copper carbonate, copper hydroxide, and a combination thereof. 5. The aqueous wood preservative slurry of claim 1, wherein the copper compound is selected from the group consisting of tribasic copper sulfate, copper oxychloride, basic copper nitrate, basic copper phosphate, basic copper phosphosulfate, copper ferricyanide, copper ferricyanate, copper carbonate, copper borate, copper silicate, copper fluorosilicate, copper thiocyanate, copper boride and a combination thereof. 6. The aqueous wood preservative slurry of claim 1, wherein the d96 of the first particulates is about 0.5 micron or less, the d99 is about 1 microns or less, and the d50 is between 0.05 microns and 0.4 microns. 7. The aqueous wood preservative slurry of claim 1, wherein said injectable first particulates are wet-milled in the presence of a liquid comprising a surface active agent and an effective amount of milling beads having a diameter between 0.1 mm and 0.8 mm and a density greater than about 3 grams/cm3. 8. The aqueous wood preservative slurry of claim 1, wherein said aqueous wood preservative slurry further comprises an organic biocide, wherein at least a portion of the organic biocide is coated on the first particulates. 9. The aqueous wood preservative slurry of claim 1, wherein said aqueous wood preservative slurry further comprises a plurality of injectable second particulates comprising a sparingly soluble in water organic biocide, wherein the second particulates have a d96 of about 1 micron or less and a d99 of about 1.5 microns or less. 10. The aqueous wood preservative slurry of claim 9, wherein the d96 of the second particulates is about 0.5 micron or less, the d50 is between about 0.05 microns and about 0.4 microns. 11. The aqueous wood preservative slurry of claim 9, wherein the organic biocide is selected from the group consisting of amitraz, deltamethrin, bifenthrin, chlorpyrifos, chlorpyrifosmethyl, cyfluthrin, cypermethrin, tralomethrin, betacyfluthrin, cyhalothrin, lambda-cyhalothrin, alpha-cypermethrin, triazophos, beta-cypermethrin, cyphenothrin, permethrin, phenothrin, cyproconazole, tetraconazole, dodemorph, difenoconazole, dimethomorph, fenarimol, diniconazole, myclobutanil, etridiazole, penconazole, flusilazole, prochloraz, imibenconazole, triadimefon, propiconazole, azaconazole, tebuconazole, epoxyconazole, tridemorph, penpropimorph, trifluinizole, chlorothalonil, imidacloprid, 3-iodo-2-propynyl butylcarbamate, fludioxonil, azoxystrobin, thiabendazole, cyprodinil, isothiazolone, quaternary ammonium compound, and a combination thereof. 12. The aqueous wood preservative slurry of claim 11, wherein the quaternary ammonium compound is selected from the group consisting of didecyldimethylammonium salt, benzyldimethyltetradecylammonium chloride, benzyldimethyldodecylammonium chloride, and didecyldimethylammonium chloride. 13. The aqueous wood preservative slurry of claim 1, wherein the aqueous wood preservative slurry further comprises a plurality of injectable third particulates of a solid zinc compound, solid zinc oxide, solid iron oxide, or any mixture thereof, wherein the third particulates have a d96 of about 1 micron or less and a d99 of about 1.5 microns or less. 14. The aqueous wood preservative slurry of claim 13, wherein the zinc compound is selected from the group consisting of zinc hydroxide; basic zinc carbonate, basic zinc phosphate, zinc borate, zinc oxychloride, zinc fluoroborate, zinc carbonate, zinc orthophosphate, zinc fluoride, and a combination thereof. 15. The aqueous wood preservative slurry of claim 1, wherein said copper compound is a copper oxide.
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