Polycarbonate-polyether block copolymers, polymer blends containing same and intermediates for the production thereof.

摘要

Block copolymers of the general formula

( polycarbonate G ( polyether glycol ) wherein G is an ester aromatic carbonate and/or an ester-ester linkage, substantially free of aliphatic ether linkages are thermally stable in comparison with prior art block copolymers. They form compatible blends with a number of other thermoplastic resins to produce molded articles with improved resiliency. The block copolymers are produced from novel terminally functional end capped polyalkylene glycols.