Aromatic poly imine and its manufacturing method, and the aromatic poly imine oligomer and its manufacturing method null which are used for the said aromatic poly

摘要

An aromatic polyimine oligomer comprising repeating units composed of an aromatic dialdehyde having a phenolic hydroxyl group and an aromatic diamine and having a number-average degree of polymerization of 2 to 20, and a process for producing the same. An aromatic polyimine and a process for producing the same by thermally dehydrating the oligomer.