Patent ID: 8232349

Claim:
A transparent thermoplastic resin comprising: a rubber phase including an aromatic rubbery block copolymer resin comprising about 10 to about 50% by weight of a rubbery polymer and about 50 to about 90% by weight of an aromatic vinyl compound; and a resin phase including a terpolymer comprising about 50 to about 95% by weight of an aromatic vinyl compound, about 0.1 to about 30% by weight of a vinyl cyanide compound and about 0.1 to about 45% by weight of an unsaturated alkyl ester compound, wherein said rubber phase and said resin phase have a co-continuous phase structure and wherein the difference between refractive indices of said terpolymer and said aromatic rubbery block copolymer resin is about 0.008 or less.