Transparent chemical resistant impact acrylic alloy

a transparent acrylic alloy composition comprising:

• a) from 80 to 96 weight percent of an acrylic copolymer composition matrix comprising 1) from 30 to 70 weight percent of an acrylic copolymer having a high weight average molecular weight of greater than 125,000 g/mol, wherein said acrylic copolymer comprises from 90 to 99.5 weight percent of methylmethacrylate monomer units, and from 0.5 to 10 weight percent of C1-4 alkyl acrylate or alkyl methacrylate monomer units, and 2) from 10 to 60 weight percent of one or more impact modifiers;
• wherein the impact modifier is a core-shell impact modifier
• b) from 3 to 15 weight percent of a low molecular weight polyalkyl(meth)acrylate copolymer melt flow processing aid, having a molecular weight of less than 100,000 g/mol,
• c) from 0 to 3 weight percent of polyethylene glycol,
• d) from 1 to 5 weight percent of polyvinylidene fluoride,
• the total adding to 100 percent.