POLYCARBONATES WITH GOOD WETTABILITY Russian patent published in 2011 - IPC C08G64/04 C08G64/06 C08G64/12 C07C271/06 C08K5/205 C08L69/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a polycarbonate resin as substrate material for making transparent moulded articles. The polycarbonate resin is obtained using a continuous method on a phase boundary through phosgenation of bisphenols at temperature between 0 and 40°C with 8-17 mol % excess phosgene. The resin contains carbamate compounds of formula (I) in which R¹ and R² denote hydrogen or C₁-C₁₂ alkyl, mainly methyl, ethyl, propyl or butyl, or R¹ and R² together denote C₄-C₁₂ alkylidene, R³ and R⁴ denote, C₁-C₁₂ alkyl or phenyl, or R³ and R⁴, bonded with a carbon atom, together form cyclohexyl or trimethylcyclohexyl.

EFFECT: invention enables to obtain polycarbonate resin with low content of carbamate compound impurities equal to 0,01-150 parts per million.

9 cl, 1 tbl, 6 ex