ANNULAR OR TUBULAR SHAPED ARTICLES OF NOVEL POLYMER BLENDS

摘要

The present invention is directed to a tubular article of manufacture in an annular or tubular shape having an outer diameter, an inner diameter and a length comprising one or more materials selected from the group consisting of: a) an immiscible blend of polymers comprising one or more polyetherimides, having more than one glass transition temperature wherein the polyetherimide has a glass transition temperature greater than 217° Celsius; b) a miscible blend of polymers, comprising one or more polyetherimides, having a single glass transition temperature greater than 180° Celsius; or, c) a single polyetherimide having a glass transition temperature of greater than 247° Celsius.