Patent ID: 6843837
Filing Date: 2005-01-18
Classification: A01N,B27K,C08K,C08L

Abstract:
1. An aqueous preservative composition for treating a cellulose based products, said composition comprising: a preservative metal selected from the group consisting of copper, cobalt, aluminum, iron, lead, tin, cadmium, nickel, chromium, silver, zinc and mixtures thereof in a preservative amount; a non-polymeric amine compound in an amount sufficient to solubilize the preservative metal; a polyethylenimine compound in an amount sufficient to form a chelation complex with the metal; a vinyl based polymer selected from the group consisting of poly(vinyl alcohol), polyacrylamide, poly(N-vinyl pyrrolidone), poly(N-isopropyl acrylamide) and mixtures thereof; and ammonia or an ammonia salt; wherein no precipitate is present in the aqueous preservative composition.