Patent ID: 9168700
Filing Date: 2015-10-27
Classification: B29C,C08G,C08J,C08L

Abstract:
1. A method for producing a polycarbonate resin hollow foamed molded article comprising kneading a polycarbonate resin (A), a polyester resin (B) in an amount of 5 to 80 parts by weight per 100 parts by weight of the polycarbonate resin (A) and a foaming agent to obtain a foamable molten resin, extruding the foamable molten resin to obtain a foamed parison, and blow molding the foamed parison, which is maintained in a softened state after extruding the foamable molten resin, in a mold disposed directly beneath a die to form the hollow foamed molded article, wherein the polyester resin (B) is a polyester copolymer containing diol component units, 10 to 80 mol % of which are glycol component units each having a cyclic ether structure which is represented by a formula (1) or a formula (2), and dicarboxylic acid component units, and wherein the polycarbonate resin (A) is composed of a polycarbonate resin (A1) having a melt viscosity of 2,000 to 3,000 Pa·s at 250° C. and at a shear rate of 100 sec the formula (1): wherein, R the formula (2): wherein, R R wherein the polycarbonate resin hollow foamed molded article has an apparent density of 0.1 to 0.4 g/cm