ACRYLIC POLYMER COMPOSITION

摘要

Provided in the present invention is an acrylic polymer composition comprising: (i) (a) a methacrylic resin and (b) a block copolymer having, in the molecule thereof, at least one structure in which (b2) polymer blocks each composed mainly of methacrylate ester units bonded to both ends of (b1) a polymer block composed mainly of acrylate ester units, and having a polymer block (b2) content of 10 to 50 wt%; (ii) the weight ratio (a/b) of the methacrylic resin (a) to the block copolymer (b) falling within a range of 3/97 to 40/60; and (iii) the total amount of the methacrylic resin (a) and the polymer block (b2) component composed mainly of methacrylate ester units being 10 to 60 wt% based on the total amount of the resin components. The acrylic polymer composition according to the present invention can be used suitably as a molding or forming material for various purposes, because without impairing the excellent weather resistance and flexibility derived from acrylic thermoplastic elastomers, it possesses excellent balance between these properties and mechanical strength; and moreover, it is able to have improved transparency by heightening the affinity between the methacrylic resin (a) and block copolymer (b).