| abstract |
The present invention relates to a method and a wood preserving composition which is free of poly-aspartic acid and its derivatives and comprises mixtures of a metal compound, complexing agents selected from ethanolamines, polyethylenimine, ammonia or a mixture of these compounds, and a vinyl based polymer selected from poly (vinyl alcohol)(PVA), poly (acrylamide)(PA), poly (N-vinyl pyrrolidone)(PVP) and poly (N-isopropyl acrylamide)(PNIPAM). The resulting metal amine solution can then be used to formulate a variety of metal-based cellulosic material preserving products. |