Micronized wood preservative formulations in organic carriers

Abstract

Provided is a composition for the preservation of wood and other cellulosic materials. The composition comprises a dispersion of micronized inorganic compounds and/or organic biocides in an organic carrier. Also provided is a method for making the composition.

We claim: 
     
         1 . A wood preservative composition comprising:
 (a) an inorganic compound component selected from the group consisting of a metal, metal compound and combinations thereof, and/or an organic biocide component; and   (b) a liquid organic component;   wherein the inorganic compound component and/or organic biocide component in a) comprise a dispersion of particles in the liquid organic component, and wherein greater than 80 wt percent of the particles are micronized.   
     
     
         2 . The composition of  claim 1 , wherein the composition comprises an organic biocide component selected from the group consisting of biocides listed in Table 1. 
     
     
         3 . The composition of  claim 1 , wherein the composition comprises both an the inorganic compound component and an organic biocide component, and both of which are present as micronized particles. 
     
     
         4 . The composition of  claim 1  wherein the composition comprises an inorganic compound component which comprises copper, one or more copper compounds, or combinations thereof. 
     
     
         5 . The composition of  claim 4 , wherein the inorganic compound component is micronized and comprises one or more copper compounds that are selected from the group consisting of copper hydroxide, copper oxide copper carbonate, basic copper carbonate, copper oxychloride, copper 8-hydroxyquinolate, copper dimethyldithiocarbamate, copper omadine and copper borate. 
     
     
         6 . The composition of  claim 2 , wherein the organic biocide component comprises tebuconazole, propiconazole, cyproconazole, bifenthrin, permethrin, cypermethrin, 2-(thiocyanatomethylthio)benzothiazole, Chlorothalonil, Dichlofluanid, Kathon 930, Kathon WT, Methylisothiazolinone, Benzisothiazolin-3-one, 2-octyl-3-isothiazolone, Imidacloprid, lodopropynyl Butylcarbamate, Fipronil, Carbendazim or Cyfluthrin. 
     
     
         7 . The composition of  claim 1 , wherein the liquid organic component comprises white mineral spirits, #2 fuel oil, n-butyl acetate or methoxypropyl acetate. 
     
     
         8 . The composition of  claim 5 , wherein the liquid organic component comprises white mineral spirits, #2 fuel oil, n-butyl acetate or methoxypropyl acetate. 
     
     
         9 . The composition of  claim 6 , wherein the liquid organic component comprises white mineral spirits, #2 fuel oil, n-butyl acetate or methoxypropyl acetate. 
     
     
         10 . The composition of  claim 1  wherein the micronized particles have a size of between 0.05 to 1.0 microns. 
     
     
         11 . The composition of  claim 1 , further comprising an agent selected from the group consisting of water repellants, colorants, emulsifying agents, dispersants, stabilizers and UV inhibitors. 
     
     
         12 . A method for preserving a wood product comprising the step of contacting the product with a wood preservative composition of  claim 1 . 
     
     
         13 . The method of  claim 12 , wherein the composition comprises 1) an inorganic compound component and 2) an organic biocide component selected from the group consisting of biocides listed in Table 1. 
     
     
         14 . The method of  claim 12 , further comprising the step of pressure treating the wood product with the wood preservative composition. 
     
     
         15 . The method of  claim 13 , wherein the inorganic compound component and the organic biocide component are present as micronized particles. 
     
     
         16 . The method of  claim 15 , wherein the inorganic component comprises one or more copper compounds that are selected from the group consisting of copper hydroxide, copper oxide copper carbonate, basic copper carbonate, copper oxychloride, copper 8-hydroxyquinolate, copper dimethyldithiocarbamate, copper omadine and copper borate; and wherein the organic biocide component comprises tebuconazole, propiconazole, cyproconazole, bifenthrin, permethrin, cypermethrin, 2-(thiocyanatomethylthio)benzothiazole, Chlorothalonil, Dichlofluanid, Kathon 930, Kathon WT, Methylisothiazolinone, Benzisothiazolin-3-one, 2-octyl-3-isothiazolone, Imidacloprid, lodopropynyl Butylcarbamate, Fipronil, Carbendazim or Cyfluthrin. 
     
     
         17 . The method of  claim 12 , wherein the liquid organic component comprises white mineral spirits, #2 fuel oil, n-butyl acetate or methoxypropyl acetate. 
     
     
         18 . The method of  claim 16 , wherein the liquid organic component comprises white mineral spirits, #2 fuel oil, n-butyl acetate or methoxypropyl acetate. 
     
     
         19 . The method of  claim 16 , wherein the size of the copper compound particles is between 0.05 and 1.0 microns. 
     
     
         20 . The method  claim 12 , wherein the composition further comprises an agent selected from the group consisting of water repellants, colorants, emulsifying agents, dispersants, stabilizers and UV inhibitors.