| 摘要 |
A copolycarbonate having a low water absorption coefficient and excellent heat resistance, low temperature characteristics and surface hardness is provided. The copolycarbonate (Z) of the present invention contains a unit (A) represented by the following formula and a unit (B) represented by the following formula (B) as main recurring units, the (A/B n=1 ) molar ratio of the unit (A) and the unit (B n=1 ) being 40/60 to 99/1. The unit (B n=1 ) is a single unit constituting a block.
(R 1 is an alkylene group or cycloalkylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. R 2 is an alkylene group, cycloalkylene group or arylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. "r" and "s" are each independently an integer of 0 to 4. "l" is 0; "m" is 0; and "n" is an integer of 2 to 100; or "l" is 1; "m" is 1; and "n" is an integer of 1 to 100.) |
