Patent ID: 7625445

Claim:
An aggregate for making a molded article, said aggregate comprising an acrylate based resin matrix being 20 to 55 percent by weight of the aggregate and 45 to 80 percent by weight of anti-abrasive particles of the aggregate, wherein 50 to 80 percent of the anti-abrasive particles being quartz particles having a size of 0.1 mm and 1.2 mm, at least 30 to 65 percent or the anti-abrasive particles being broken particles having irregular shape with sharp edges, at least 60 to 90 percent of the anti-abrasive particulate mater being silanized, 1 to 7 percent of the anti-abrasive particles matter having particle size of less than 0.1 mm, trimetholol propane trimethacrylate as a cross linking agent of 0.5 to 4 percent of the aggregate; an internal lubricant not greater than 0.4 percent of the aggregate; and peroxides approximately 0.2 to 1 percent of the aggregate, all percentages being by weight, the weight being based on the weight of the aggregate.