A polymer having dihydropyridine rings or dihydrotriazine rings as main constitutional units, as ethynyl- or cyanato-terminated Schiff's compound which is a starting material for producing the polymer, and applications of the polymer.
                            一种以
二氢吡啶环或二氢
三嗪环为主要结构单元的聚合物,作为生产该聚合物的起始材料的
乙炔或
氰基端希夫化合物,以及该聚合物的应用。