Abstract: A method for producing a polycarbonate article having improved ultraviolet protection, the method comprising extruding a substrate comprising polycarbonate; impregnating an ultraviolet radiation absorber into a surface of the substrate to form an interlayer; and laminating a weatherable film onto the interlayer of the substrate. This method allows a weatherable acrylic film to be uniformly applied to the substrate to provide long term anti-yellowing performance. Articles made by this dual-layer process have excellent weathering performance for extended periods of time and can be employed in the production of commercial signs.

Abstract: A thermoplastic composition comprising a polyimide resin, a polycarbonate resin, a polyimide-polysiloxane copolymer and talc.

Abstract: A method for producing a polycarbonate article having improved ultraviolet protection, the method comprising extruding a substrate comprising polycarbonate; impregnating an ultraviolet radiation absorber into a surface of the substrate to form an interlayer; and laminating a weatherable film onto the interlayer of the substrate. This method allows a very thin weatherable acrylic film to be uniformly applied to the substrate to provide long term anti-yellowing performance. Articles made by this dual-layer process have excellent weathering performance for extended periods of time and can be employed in the production of commercial signs.

Abstract: The present invention relates to a novel composite adhesive used to adhere coating materials onto a substrate wherein the substrate material and the coating material have significantly different expansion properties, e.g., thermoplastic coating materials onto cellulose based substrate materials. The composite adhesive comprises both a rigid adhesive such as an epoxy or acrylic and a laminating adhesive such as a rubber based contact cement. In a preferred embodiment of the invention, a spline material is also rigidly adhered to the coating material so as to reinforce the bond between substrate and coating, especially where two pieces of coating material are attached at a seam. In another preferred embodiment the composite adhesive and/or spline material is used in preparing composite articles such as counters, sinks, furniture, profile edging, chemical resistant lab tops, showers, etc.