The study on the reactions of 2.2.6.6-tetramethyl-4-piperydinol with aromatic mono- and diisocyanates

This paper presents the principal aspects of an experimental study on the reactions of a bifunctional photostabilizator of piperydinic type (2, 2, 6, 6, - tetramethyl - 4 piperydinol) with monoisocyanate and two diisocyanates. There are shortly, presented the conditions for the synthesis of urethanes and alophanates, as well as the way in which (with a support of IR spectrocopy, UV - Vis spectroscopy, HPLC - in verse phase and thermal analyses) this shows the existence of these compounds from the numerous possible theoretical structures. The study of these reactions is useful order to clear sonic aspects concerning the way photostabilizators of this type bind with polyurethan molecules during the reactive photostabilization of the latter.