| 摘要 |
<p>An object of the invention is to provide a polycarbonate resin which has excellent film toughness, a low photoelastic coefficient, excellent orientation properties, and high birefringence and a transparent film formed from the resin. The polycarbonate resin of the invention includes a structural unit derived from a dihydroxy compound represented by the following general formula (1), a structural unit derived from a dihydroxy compound represented by the following general formula (2), and a structural unit derived from at least one dihydroxy compounds selected from the group consisting of a dihydroxy compound represented by the following general formula (3), a dihydroxy compound represented by the following general formula (4), a dihydroxy compound represented by the following general formula (5), and a dihydroxy compound represented by the following general formula (6), and in which the structural unit derived from a dihydroxy compound represented by the general formula (1) accounts for 18% by mole or more of the polycarbonate resin.
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒHO-R 5 -OH€ƒ€ƒ€ƒ€ƒ€ƒ(3)
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒHO-CH 2 -R 6 -CH 2 -OH€ƒ€ƒ€ƒ€ƒ€ƒ(4)
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒH-(O-R 7 ) p -OH€ƒ€ƒ€ƒ€ƒ€ƒ(5)
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒHO-R 11 -OH€ƒ€ƒ€ƒ€ƒ€ƒ(6)</p> |
