V. Gaina et al., POLY(AMINO BISMALEIMIDE)S .1. SYNTHESIS AND CHARACTERIZATION OF NEW POLY(AMINO BISMALEIMIDE)S CONTAINING URETHANE LINKS, Pure and applied chemistry, A32, 1995, pp. 121-132
New poly(amino bismaleimide)s containing urethane links were synthesiz
ed by the addition of two aromatic diamines (4,4'-oxydianiline and 4,4
'-ethylenedianiline) to various bismaleimides with flexible methylenic
groups. Their structures were confirmed by IR, H-1 NMR spectra and el
emental analysis. The polymers were characterized by viscosimetric mea
surements, softening points and thermogravimetric data.