Patent ID: 7862746
Filing Date: 2011-01-04
Classification: B29C,B29K,C08H,C08K,C08L

Abstract:
1. A method of protecting natural composites against light-induced degradation which method comprises the steps of treating wood based fillers with an impregnating composition to form an impregnated wood based filler wherein the impregnating composition comprises wherein G E is oxyl, hydroxyl, hydrogen or methyl; E′ is hydroxyl, hydrogen or methyl; X is an inorganic or organic acid; and, wherein the total charge of h cations is equal to the total charge of j anions; drying the impregnated fillers, and melt blending the impregnated fillers with a polymer—to form a melt blend—to form the natural composite, wherein the wood based fillers are selected from the group consisting of sawdust, alfalfa, wheat pulp, wood chips, wood fibers, wood particles, ground wood, wood flour, wood flakes, wood veneers, wood laminates, straw, cotton, rice huls, coconut shells, peanut shells, bagass, plant fibers, hemp, bamboo, palm fiber and kenaf and the wood based fillers are treated with the impregnating composition prior to combining the wood based fillers with the polymer to form the natural composite.