Copolymers and process for their preparation

摘要

Novel copolymers are prepared by the interaction of a melt mix of a high molecular weight or low molecular weight bisphenol A polycarbonate polymer and a high molecular weight diprimary dialcohol polyester polymer such as polyethylene terephthalate polymer. The resulting copolymers are transparent, relatively tough and are useful as glazing materials or molding compounds and are capable of maintaining dimensional stability at temperatures approaching their glass transition temperature.