Process for the preparation of crosslinked, unsaturated polymers and the polymers thus obtained

摘要

Novel crosslinked unsaturated polymers, which have better properties than conventional crosslinked unsaturated polymers are obtained by reacting a beta -aminocrotonic acid ester, beta -aminocrotononitrile or beta -aminocrotonamide with a diisocyanate or polyisocyanate and a polyol, for example at temperatures of between 50 DEG and 180 DEG C.