Polycarbonate compositions having mold-release properties

摘要

A thermoplastic molding composition having improved release properties is disclosed. The composition contains a polycarbonate resin and a mold release agent which is an ester conforming structurally to R[OCOR'OCOR'']m where R is a member selected from the group consisting of glyceryl, trimethylol propyl and pentaerythrityl radicals, m is 2 to 4, R' is a C8-20 hydrocarbon radical having a pendant alkyl group, and R'' is the esterification residue of a C1-24 aliphatic or an aromatic carboxylic acid.