US Patent 7270882 Weatherable multilayer articles and method for their preparation

Disclosed are weatherable multilayer articles comprising (i) a coating layer comprising a block copolyestercarbonate comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one aromatic dicarboxylic acid, (ii) a second layer comprising a polymer comprising carbonate structural units, (iii) an adhesive tielayer comprising a copolymer with structural units derived from at least one alkenyl aromatic compound and at least one conjugated diene, and (iv) a substrate layer, wherein the coating layer is in contiguous contact with the second layer, and the adhesive tielayer is in contiguous contact with the second layer and the substrate layer. Also disclosed is a method for making the multilayer article.