Patent ID: 7498398

Claim:
A polyacrylate-polycarbonate copolymer comprising: a polycarbonate block comprising aromatic carbonate units, and a polyacrylate block derived from a difunctional polyacrylate polymer having the formula Z 1 -(M) x -Z 2 wherein M is an acrylate block unit comprising a reaction residue of a (meth)acrylate monomer, a non-(meth)acrylate monomer, or a combination comprising a (meth)acrylate and a non-(meth)acrylate monomer, and wherein at least one acrylate block unit is a reaction residue of a (meth)acrylate monomer; x is greater than one; and Z 1 and Z 2 are each independently functionalized terminal groups of the formula -(A 3 ) y -B, wherein B is a reactive end group comprising a hydroxy group or non-hydroxy group, A 3 is an aliphatic linking group, an aromatic linking group, or an aliphatic-aromatic linking group, and y is 0 or 1, and wherein A 3 is free of hydrogen atoms located on a carbon atom in a position beta to B when B is a hydroxy group, and B and A 3 are each free of sulfur atoms; wherein the polyacrylate block has a T g of less than or equal to −25° C.; and wherein the number and type of acrylate block units of the polyacrylate block, and the weight ratio of polyacrylate blocks and polycarbonate blocks of the polyacrylate-polycarbonate copolymer are selected such that a molded article consisting of the polyacrylate-polycarbonate copolymer having a thickness of 3.2±0.12 millimeters has a haze of less than or equal to 5% as determined according to ASTM D1003-00.