Patent ID: 8541506

Claim:
A polycarbonate resin composition comprising: (A) about 50 to about 99 parts by weight of a polycarbonate resin; and (B) about 1 to about 50 parts by weight of a ultra-high molecular weight branched acrylic copolymer resin, wherein (B) the ultra-high molecular weight branched acrylic copolymer resin comprises a polymer or a combination of polymers prepared by polymerizing a monomer mixture comprising (b1) an aromatic methacrylate monomer, an alicyclic methacrylate monomer, or a combination thereof, (b2) a monomer copolymerizable with the aromatic methacrylate monomer, the alicyclic methacrylate monomer, or the combination thereof comprising methyl methacrylate, ethyl methacrylate, propyl methacrylate, methyl acrylate, ethyl acrylate, propyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, monoglycerol acrylate, acrylic acid, methacrylic acid, maleic anhydride, or a combination thereof, (b3) a (meth)acrylic monomer having a flexible segment, and (b4) a monomer forming a branched structure; wherein (b3) the (meth)acrylic monomer having a flexible segment comprises a compound represented by the following Chemical Formula 5 or a combination thereof: wherein m is an integer from 10 to 18, X is hydrocarbon, and Y is methyl or hydrogen.