Patent ID: 8940836
Filing Date: 2015-01-27
Classification: C08L

Abstract:
1. A polycarbonate resin composition having improved transparency and scratch resistance consisting essentially of: (A) about 10 to about 99% by weight of a polycarbonate resin; (B) about 1 to about 90% by weight of an acrylic polymer, copolymer, or mixture thereof with a high refractive index of about 1.495 to about 1.590 and a weight average molecular weight of 15,000 to 25,000 g/mol consisting essentially of: (b1) about 5 to about 45% by weight of an aromatic methacrylate, aliphatic methacrylate or combination thereof represented by the following Chemical Formula 1, Chemical Formula 2, or a combination thereof, and (b2) about 55 to about 95% by weight of a multifunctional unsaturated monomer, methacrylic acid ester, acrylic acid ester, or combination thereof, wherein m is an integer from 0 to 10 and X is phenyl, methylphenyl, methylethylphenyl, propylphenyl, methoxyphenyl, cyclohexylphenyl, phenylphenyl or benzylphenyl wherein m is an integer from 0 to 10, Y is oxygen (O) or sulfur (S), and Ar is cyclohexyl, phenyl, methylphenyl, methylethylphenyl, propylphenyl, methoxyphenyl, cyclohexylphenyl, chlorophenyl, bromophenyl, phenylphenyl or benzylphenyl; optionally an acrylic resin (C) formed by polymerizing one or more monomers selected from the group consisting of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, and combinations thereof; and optionally one or more additives selected from the group consisting of flame retarders, surfactants, nucleating agents, coupling agents, fillers, light-stabilizers, reinforcers, antistatic agents, antibacterial agents, mold lubricants, heat stabilizers, antioxidants, light stabilizers, compatibilizers, inorganic additives, fluorescent brightening agents, stabilizers, lubricants, antistatic agents, pigments, dyes, flame retardants, and combinations thereof.