Amines acylated a steric impediment which can be photolytically, and their application to the stabilization of polymers

摘要

The invention relates to a steric impediment cyclic amines, the basic nitrogen atom carries an acyl radical which can be eliminated photochemically. / p & & p & these amines, which are, for example poly - piperidines, are acylated to the nitrogen by a radical r - co - co - in which r represents, for example a phenyl, naphthyl, alkoxy, cyclohexyloxy, phenoxy or benzyloxy, or by a radical r - ch - co - in which r denotes a halogen or a phenyl, naphthyl, cyano, acetyl, - p (o) (or) or - however, the symbol r designating an alkyl or phenyl and the symbol r is a phenyl optionally substituted. / p & & p & it is possible to desacycler these compounds in the radiating by an ultra - violet radiation, which is advantageous when the basicity amines is bothersome during the application. These acylamines will be used, for example, for the stabilization of polymers against the application, in particular for the stabilization of the curable resins acids. It is used with interest in paints and varnishes.