Patent ID: 7999032
Filing Date: 2011-08-16
Classification: B32B,C08F,C08J,C08K,C08L,C09D,Y10T

Abstract:
1. A methacrylic resin composition (C) comprising an acrylic graft copolymer (A) containing an acrylic ester rubbery polymer (A-a) and a methacrylic polymer (B) containing 80% or more by weight of a methacrylic ester, and satisfying the following: (1) the content by percentage of the acrylic ester rubbery polymer (A-a) is from 5 to 45% or less by weight, (2) the average particle diameter d of the acrylic ester rubbery polymer (A-a) is from 50 to 200 nm, (3) the relationship between the average particle diameter d (nm) of the acrylic ester rubbery polymer (A-a) and the amount w (% by weight) of a crosslinking agent used for the acrylic ester rubbery polymer (A-a) satisfies the following formula: (4) the graft ratio of the acrylic graft copolymer (A) is from 30 to 250%, (5) the reduced viscosity of a fraction of the methacrylic resin composition (C) soluble in methyl ethyl ketone is from 0.2 to 0.8 dl/g, and (6) an ultraviolet absorber represented by the following general formula (1) is copolymerized, in an amount of 0.01 to 30 parts by weight for 100 parts by weight of the acrylic graft copolymer (A), with the acrylic graft copolymer (A): wherein X is H or a halogen, R