| abstract |
Polycarbonate resin containing small amounts of carbamate compounds is disclosed. The resin that contains at least one of compounds conforming to n nwherein n nR 1 and R 2 independently of one another denote hydrogen or C 1 -C 12 -alkyl, or together denote C 4 -C 12 -alkylidene, R 3 and R 4 independently of one another represent hydrogen, C 1 -C 12 -alkyl, or phenyl, or together with the carbon atom to which they are bonded form cyclohexyl or trimethylcyclohexyl, and R 5 denotes hydrogen, C 1 -C 12 -alkyl, C 5 -C 12 -cycloalkyl, phenyl or cumyl, are characterized by their low electrostatic field and therefore suitable for making optical storage media. |