abstract |
The present invention relates to a process for producing thermoplastic aromatic polycarbonates, the structural units of the formulas 1 and / or 2 contain, where R is Ci-C 3 alkyl, preferably CH 3 , and X is a single bond, C 1 -C 5 alkylene, C 2 -C 5 alkylidene, cyclohexylene, cyclchexylidene, -O-, or -S- . |