| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently and stably manufacture a polycarbonate resin excellent in thermostability, hue and mechanical strength with less foreign matter. <P>SOLUTION: The polycarbonate resin is manufactured by supplying a polycarbonate resin, which is produced by using a dihydroxy compound having -CH<SB POS="POST">2</SB>-O- group as a raw material dihydroxy compound and polycondensing it by transesterification reaction, to an extruder at a temperature of 180°C or higher and lower than 250°C. <P>COPYRIGHT: (C)2013,JPO&INPIT |
