Abstract: A polycarbonate resin molding material containing (A) 100 parts by weight of a polycarbonate resin and 0.001 to 1.0 part by weight of a mold release agent (B) which is composed of a fatty acid ester and a phosphorus-containing heat stabilizer and contains 0.0001 to 50 parts by weight, per 100 parts by weight of the fatty acid ester (b1), of the phosphorus-containing heat stabilizer (b2). The present invention provides a polycarbonate resin molding material excellent in mold releasability and heat resistance during molding, and a molded article therefrom. According to the present invention, particularly, there is provided a polycarbonate resin molding material excellent in mold releasability and thermal stability during molding and suitable for producing a optical disk by incorporating a small amount of a mold release agent and a heat stabilizer.

Abstract: A polycarbonate resin molding material containing (A) 100 parts by weight of a polycarbonate resin and 0.001 to 1.0 part by weight of a mold release agent (B) which is composed of a fatty acid ester and a phosphorus-containing heat stabilizer and contains 0.0001 to 50 parts by weight, per 100 parts by weight of the fatty acid ester (b1), of the phosphorus-containing heat stabilizer (b2).

Abstract: The present invention relates to a polycarbonate resin molding material for optical use which contains substances (A) having a 5% weight reduction start temperature measured by thermogravimetric analysis of 400° C. or less in a total amount of 1 wt % or less and to a polycarbonate resin molding material for optical use which contains substances (A) having a 5% weight reduction start temperature measured by thermogravimetric analysis of 400° C. or less in a total amount of 1 wt % or less and a sodium compound in an amount of 1 ppm or less in terms of metal sodium. The present invention also relates to optical disk substrates formed from these molding materials. According to the present invention, use of each of the above molding materials makes possible the continuous molding of an optical disk substrate and the obtained optical disk substrate has high quality and can retain reliability for a long time as an optical disk for a high-density recording medium.

Abstract: The present invention relates to a polycarbonate resin molding material for optical use which contains substances (A) having a 5% weight reduction start temperature measured by thermogravimetric analysis of 400° C. or less in a total amount of 1 wt % or less and to a polycarbonate resin molding material for optical use which contains substances (A) having a 5% weight reduction start temperature measured by thermogravimetric analysis of 400° C. or less in a total amount of 1 wt % or less and a sodium compound in an amount of 1 ppm or less in terms of metal sodium. The present invention also relates to optical disk substrates formed from these molding materials.