Patent ID: 6844396
Filing Date: 2005-01-18
Classification: B32B,C08L,Y10T

Abstract:
1. An acrylic resin composition comprising, (A) 10 to 40 parts by weight of a high molecular weight acrylic (co)polymer which is a one-step or multi-step polymer containing 72 to 100% by weight of methyl methacrylate and 0 to 28% by weight of a copolymerizable monomer, said (co)polymer having a specific viscosity of at least 0.5 (solvent: toluene, concentration: 0.4%, temperature: 30° C.), wherein polymer layer obtained in one of the steps contains at least 72% by weight of methyl methacrylate, has a specific viscosity of at least 0.5 and makes up at least 55% by weight of the total weight of said high molecular weight acrylic (co)polymer (A); (B) 0 to 80 parts by weight of an acrylic (co)polymer containing 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of a copolymerizable monomer, said acrylic (co)polymer having a specific viscosity of less than 0.5; (C) 10 to 90 parts by weight of an impact modifier with a multilayer structure, wherein the total of (A), (B) and (C) is 100 parts by weight and said composition has a melt flow index of 0.35 g/10 minutes to 1.4 g/10 minutes (230° C., 3.8 kg load).