To provide an extrusion molded article excellent in heat resistance, mechanical properties and environmental durability, which comprises a polycarbonate resin prepared by using biomass resources as raw materials; and to provide an optical film being small in wavelength dispersion of phase difference values and high in heat resistance and thermal stability made from the polycarbonate resin having a low photoelastic coefficient.
This extrusion molded article is produced by extrusion molding a resin, composed of a carbonate structural unit expressed by formula (1) and having melt viscosity measured by a capillary rheometer at 250C ranging 0.2103 to 4.0103 Pa s under a condition of 600 sec-1 shear rate, at a cylinder temperature range of 220-270C. This optical film comprises a polycarbonate resin having 150-200C glass transition temperature, 330-400C 5% weight reduction temperature and 0.20-0.45 specific viscosity at 20C of a solution obtained by dissolving 0.7g of the polycarbonate resin in 100 ml of methylene chloride.
KINOSHITA MASAMI
MIYAKE RIO
SAITO MIZUHO
| JP2006028441A | 2006-02-02 | |||
| JP2005148186A | 2005-06-09 | |||
| JP2006028441A | 2006-02-02 | |||
| JP2005148186A | 2005-06-09 |
| WO2007013463A1 | 2007-02-01 | |||
| WO2005116110A1 | 2005-12-08 | |||
| WO2004111106A1 | 2004-12-23 | |||
| WO2007013463A1 | 2007-02-01 | |||
| WO2006041190A1 | 2006-04-20 | |||
| WO2005116110A1 | 2005-12-08 | |||
| WO2004111106A1 | 2004-12-23 |