Patent ID: 7067188
Filing Date: 2006-06-27
Classification: B29C,C08F,C08L,Y10S,Y10T

Abstract:
1. An extruded polymeric article having a frosted and textured surface appearance comprised of a polymeric matrix and polymeric particles which are substantially spherical, highly crosslinked, have a mean particle size of between 35 to 70 micrometers and have a particle size distribution between 10-110 micrometers wherein the article has: a) a Haze number as determined by ASTM D1003 of at least 90%, b) an opacity as determined by ASTM D2805-80 of at least 10%, c) a minimum surface roughness of 0.5 micrometers to 30 micrometers as measured using ASME methods B461.1 B461.2 and Y14.36; and d) a Total White Light Transmission of greater than 77.1% for the clear form, as determinated by a Hunterlab colorimeter_D25 model using ASTM E1331 and ASTM E1164, wherein said determinations are made using an 0.125 inch thick extruded sheet comprised of the polymeric matrix and polymeric particles; wherein said highly crosslinked polymeric particles arc comprised of: 15-35% by weight styrene; 65-85% by weight alkyl methacrylate or alkyl acrylate or a combination thereof; and 0.1-2.5% by weight crosslinking agent.