BLOCK COPOLYMERS CONTAINING BLOCKS OF POLYBENZAZOLE POLYMER AND BLOCKS OF POLYBENZOXAZINONE POLYMER OR POLYOXADIAZOLE POLYMER

摘要

Block copolymers may contain polybenzazoleblocks and blocks of polybenzoxazinone polymer orpolyoxadiazole polymer. The block copolymers may becoagulated from isotropic dopes to form shaped articlesor granular compositions. The granular compositions maybe compression molded to form molded articles. Theblock copolymers may be molded at high temperatureswithout substantial phase separation, and thepolybenzazole polymer provides support to improve thetensile propoerties of the polymer.