An extrudable molding composition formed from glassy and semicrystalline polymer

摘要

A highly filled, extruded solid surface sheet composite which has improved heat resistance, solvent resistance, and mar resistance by combination of glassy polymer and semi-crystalline polymer is disclosed, wherein the extrudable molding composition for making the said sheet composite comprises by weight based on components (a) to (d): (a) 20-65% glassy polymer; and (b) 5-35% semi-crystalline polymer; and (c) 0-10% compatibilizing agent for the glassy and the semi crystalline polymer; and (d) 10-70% particulate mineral filler; wherein the ratio of the glassy polymer to the semi-crystalline polymer is in a range from 4/1 to 3/2; wherein the glassy polymer has a glass transition temperature of at least 25 DEG C and is an acrylic polymer; and wherein the semi-crystalline polymer has a melt temperature of at least 65 DEG C and is either a polyester polymer or a polyamide polymer.