Ester terminated polycarbonates.

摘要

A method for the preparation of polycarbonate resins bearing terminal ester groups comprises the interfacial polymerization of a dihydric phenol with a carbonyl halide in the presence of a molecular weight controlling proportion of a compound of the formula: <CHEM> wherein R represents a hydrocarbyl group amenable to beta-elimination upon thermolytic degradation. The product resins are useful as intermediates in the preparation of copolymers with, for example, polyamides.