Patent ID: 6441123
Filing Date: 2002-08-27
Classification: C08G,G11B

Abstract:
A storage medium for data, the storage medium comprising:1) a substrate, a physical portion of which comprises at least one polycarbonate, and 2) at least one data layer on the substrate; the at least one polycarbonate comprising repeating units selected from the group consisting of structure (I), structure (IV), and combinations thereof: â€ƒwhere R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of C1-C6 alkyl and hydrogen; R7 and R8 are independently selected from the group consisting of C1-C6 alkyl, phenyl, C1-C6 alkyl substituted phenyl, or hydrogen; m is an integer in a range between 0 and about 12; q is an integer in a range between 0 and about 12; m+q is an integer in a range between about 4 and about 12; n is an integer selected from the group consisting of 1 and 2; and p is an integer selected from the group consisting of 1 and 2; provided when only repeating units having structure (IV) are present, one of R7 and R8 is other than CH3.