| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve moldability and fluidity of a polycarbonate resin, to increase surface hardness of an obtained molded product and to improve its hue. <P>SOLUTION: The polycarbonate resin contains at least repeating units represented by general formula (1) in the molecule and satisfies the following conditions: (a) specific intrinsic viscosity; (b) a specific branch parameter; (c) a specific ratio of melt viscosity to the intrinsic viscosity in a specific formula; and (d) pencil hardness of HB or more. In the general formula (1), X is a single bond, a substituted/unsubstituted alkylene group, a substituted/unsubstituted alkylidene group, a substituted/unsubstituted sulfur atom, or an oxygen atom. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
