Patent ID: 6106918
Filing Date: 2000-08-22
Classification: C07C,C08G,G11B

Abstract:
An optical disk substrate formed of a polycarbonate resin represented by the general formulaC.sub.6 H.sub.5 --C(CH.sub.3).sub.2 --C.sub.6 H.sub.4 --O--C(O)--[O--.phi.--Y--.phi.--O--C(O)--].sub.n O--C.sub.6 H.sub.4 --C(CH.sub.3).sub.2 --C.sub.6 H.sub.5, wherein .phi. is a phenylene radical and Y is a divalent radical in which one or two atoms separate the two .phi. units bonded thereto, and n is a positive integer.