Patent ID: 8318851
Filing Date: 2012-11-27
Classification: C08L

Abstract:
1. A weatherable resinous composition consisting essentially of (i) 19-45 wt. % of an acrylonitrile-styrene-acrylate (ASA) graft copolymer or an acrylate-modified (ASA) graft copolymer, (ii) 4-75 wt. % of at least one polyestercarbonate which is a block polyestercarbonate comprising organic carbonate blocks alternating with arylate blocks, said arylate blocks comprising ester structural units derived from at least one 1,3-dihydroxybenzene moiety and at least one aromatic dicarboxylic acid, and having a degree of polymerization of at least about 4; and (iii) 35-55 wt. % of at least one rigid thermoplastic polymer comprising structural units derived from styrene and acrylonitrile; alpha-methylstyrene and acrylonitrile; alpha-methylstyrene, styrene, and acrylonitrile; styrene, acrylonitrile, and methyl methacrylate; alpha-methyl styrene, acrylonitrile, and methyl methacrylate; or alpha-methylstyrene, styrene, acrylonitrile, and methyl methacrylate, or mixtures thereof.