The linear polymers obtained by reacting 2,6-diaminotoluene with benzaldehyde or formaldehyde were condensed in polyphosphoric acid or aqueous HCI. The ladder polymers obtained were characterized by 1H n.m.r., FTi.r., u.v.-vis, and g.p.c.
Посилання на статтю:
The synthesis and characterization of nitrogen-containing ladder polymers and their model compounds / M. Kumagai, E. A. Zarate, J. McNamara and H. Ishida* // Polymer. – 1992. – Vol 33. – P. 3942-3950.