| abstract |
A large-sized thin molded article having a complicated shape can be realized by improving fluidity during molding without deteriorating the intrinsic characteristics of an aromatic polycarbonate resin (namely, transparency, resistance to separation of surface layer, heat resistance, impact resistance and chemical resistance). Specifically disclosed is a fluidity improving agent containing 0.5-99.5 parts by mass of a polymer (A) which is obtained by polymerizing a monomer mixture (a) containing 0.5-99% by mass of (a1) an aromatic vinyl monomer, 0.5-99% by mass of (a2) a phenyl (meth)acrylate or a phenyl (meth)acrylate having a substituent in a phenyl group, and 0.5-5% by mass of (a3) a vinyl monomer having a functional group (X), and 0.5-99.5 parts by mass of a polymer (B) which is obtained by polymerizing a monomer mixture (b) containing (b1) a phenyl (meth)acrylate or a phenyl (meth)acrylate having a substituent in a phenyl group and a compound having a functional group (Y) reactive with the functional group (X) (with the total of the polymer (A) and the polymer (B) being 100 parts by mass). |