Composition of methacrylate (co) polymer and poly(carbonate-siloxane) blockcopolymer and its use in scratch and impact resitant articles

A composition comprising

• 55 to 90 weight percent of
• (a) a methacrylate copolymer comprising repeating units derived from
• 50 to 99 weight percent, based on the total weight of the copolymer, of a (C1-10 alkyl) methacrylate;
• 0.5 to 20 weight percent, based on the total weight of the copolymer, of maleic anhydride, fumaric anhydride, maleimide, or a combination thereof;
• and
• 0.5 to 40 weight percent, based on the total weight of the copolymer, of a substituted or unsubstituted alkenyl aromatic monomer;
• or
• (b) a combination of a poly(methyl methacrylate) homopolymer and greater than 1 to 25 weight percent, based on the total weight of the composition, of a copolymer comprising repeating units derived from maleic anhydride and an alkenyl aromatic monomer;
• and
• 10 to 30 weight percent of a poly(carbonate-siloxane) having a siloxane content of 30 to 70 weight percent, based on the total weight of the poly(carbonate-siloxane);
• wherein the weight percent of each component is based on the total weight of the composition.