Functionally substituted highly ordered azo-aromatic polyamides

摘要: A CLASS OF ORDERED FIBER AND FILM-FORMING AROMATIC POLYAMIDE ACIDS CORRESPONDING POLYIMIDES DERIVED FROM CERTAIN SYMMETRICAL AZO DIAMINES BEARING ACID, HYDROXYL OR MERCAPTO SUBSTITUENTS DERIVATIVES HYDROLYZABLE TO SUCH HAVE BEEN FOUND POSSESS EXCELLENT THERMAL, MECHANICAL PROPERTIES USEFUL IN FIBERS, FILMS OTHER SHAPED ARTICLES.