Patent ID: 6028161
Filing Date: 2000-02-22
Classification: C08G,G11B

Abstract:
A polycarbonate copolymer comprising the repeating structural unit represented by general formula (1-a) and at least one of the repeating structural units represented by general formulas (2-a) and (3-a); ##STR42## wherein R.sub.1 and R.sub.2 are independently an alkyl, an alkoxy, nitro or a halogen atom; R.sub.3 is hydrogen or methyl; R.sub.4 and R.sub.5 are independently hydrogen or an alkyl; R.sub.6 is independently an alkyl, an alkoxy or a halogen atom; k and l are independently an integer of 0 to 3; m and n are independently an integer of 0 to 20; and p is independently an integer of 0 to 2, although m+n is not 0.