Systems for Attaching Wood Products

Abstract

The present invention is a system of building materials with surface regions destined for joint formation that are treated with an adhesive partially comprised of a mixture of epoxy resin (96.0-99.9 parts) and hardener (4.0-0.1 parts), such that the epoxy resin/hardener mixture constitutes 50-100% of the adhesive. In an alternative embodiment, the adhesive may have epoxy resin (96.0-99.9 parts) such that the epoxy resin constitutes 45-95% of the adhesive. The remainder of the adhesive may be one or more of the following: hardeners, plasticizing agents, diluents, thickeners, fillers, colorants, opacifying agents, preservatives, and surfactants.

1 . A system for attaching a plurality of wood products:
 a first wood product;   a second wood product; and   an adhesive applied to at least one of the first wood product and the second wood product wherein the adhesive comprises a mixture of epoxy resin (96.0-99.9 parts), such that the epoxy resin constitutes 45-95% of the adhesive and wherein the adhesive has an open assembly time of at least 24 hours.   
     
     
         2 . The system of  claim 1  wherein the first wood product and the second wood product are combined to form at least one of the following types of joints: sill plate-to-foundation, rim board-to-sill plate, rim board-to-foundation, rim board-to-joist, girder-to-joist, joist-to-rim board, joist-to-blocking, joist-to-subfloor, sole plate-to-subfloor, corner post-to-stud, sheathing-to-stud, sheetrock-to-stud, siding-to-stud, siding-to-sheathing, trimmer-to-stud, header-to-stud, rafter stud-to-top plate, rafter-to-ridge board, rafter-to-sheathing, rafter-to-decking, and collar beam-to-rafter. 
     
     
         3 . The system of  claim 1  wherein the first wood product is constructed from one or more of the following: solid-sawn wooden lumber, Parallam, TimberStrand, Microllam, laminated veneer lumber, wood-based composite, glulam, finger-jointed lumber, oriented strand board, oriented strand lumber, particleboard, medium density fiberboard, and metal. 
     
     
         4 . The system of  claim 1  wherein the epoxy resin includes one or more of the following: liquid or solid adducts of bisphenol ‘A’ and epichlorohydrin, liquid or solid adducts of phenol novolac resins and epichlorohydrin, and liquid or solid adducts of cresol novolac resins and epichlorohydrin. 
     
     
         5 . The system of  claim 1  wherein the epoxy resin has an epoxide equivalent weight of about 180-210 g/equivalent. 
     
     
         6 . The system of  claim 1  wherein the epoxy resin has an epoxide equivalent weight of about 200-600 g/equivalent. 
     
     
         7 . The system of  claim 1  wherein the adhesive further comprises one or more of the following: hardeners, plasticizing agents, diluents, thickeners, fillers, colorants, opacifying agents, preservatives, and surfactants. 
     
     
         8 . The system of  claim 1  wherein the adhesive has an open assembly time greater than or approximately equal to 168 hours. 
     
     
         9 . A system for attaching a plurality of wood products:
 a first wood product;   a second wood product; and   an adhesive applied to at least one of the first wood product and the second wood product wherein the adhesive comprises a mixture of epoxy resin (96.0-99.9 parts) and hardener (4.0-0.1 parts), such that the epoxy resin/hardener mixture constitutes 50-100% of the adhesive and wherein the adhesive has an open assembly time of at least 24 hours.   
     
     
         10 . The system of  claim 9  wherein the first wood product and the second wood product are combined to form at least one of the following types of joints: sill plate-to-foundation, rim board-to-sill plate, rim board-to-foundation, rim board-to-joist, girder-to-joist, joist-to-rim board, joist-to-blocking, joist-to-subfloor, sole plate-to-subfloor, corner post-to-stud, sheathing-to-stud, sheetrock-to-stud, siding-to-stud, siding-to-sheathing, trimmer-to-stud, header-to-stud, rafter stud-to-top plate, rafter-to-ridge board, rafter-to-sheathing, rafter-to-decking, and collar beam-to-rafter. 
     
     
         11 . The system of  claim 9  wherein the first wood product is constructed from one or more of the following: solid-sawn wooden lumber, Parallam, TimberStrand, Microllam, Laminated veneer Lumber, wood-based composite, glulam, finger-jointed lumber, oriented strand board, oriented strand lumber, particleboard, medium density fiberboard, and metal. 
     
     
         12 . The system of  claim 9  wherein the epoxy resin includes one or more of the following: liquid or solid adducts of bisphenol ‘A’ and epichlorohydrin, liquid or solid adducts of phenol novolac resins and epichlorohydrin, and liquid or solid adducts of cresol novolac resins and epichlorohydrin. 
     
     
         13 . The system of  claim 9  wherein the epoxy resin has an epoxide equivalent weight of about 180-210 g/equivalent. 
     
     
         14 . The system of  claim 9  wherein the epoxy resin has an epoxide equivalent weight of about 200-600 g/equivalent. 
     
     
         15 . The system of  claim 9  wherein the hardener is an aliphatic polyamine selected from the group consisting of: diethylene triamine, tetraethylene pentamine, diethylamine, propylamine and n-aminoethyl piperazine. Amidopolyamines, which are formed by reacting polyamines with fatty acids are also suitable as hardeners for this invention. Lastly, certain polyamide hardeners suitable for this invention include dicyandiamide. 
     
     
         16 . The system of  claim 9  wherein the hardener is an aromatic polyamine selected from the group consisting of: m-phenylenediamine and tris(dimethylaminomethyl)phenol. 
     
     
         17 . The system of  claim 9  wherein the adhesive further comprises one or more of the following: plasticizing agents, diluents, thickeners, fillers, colorants, opacifying agents, preservatives, and surfactants. 
     
     
         18 . The system of  claim 9  wherein the adhesive has an open assembly time greater than or approximately equal to 168 hours.