Triazylaminotriazines, their preparation and their use for stabilizing synthetic polymers

Triazinylaminotriazines of the general formula (I) ##STR9## in which the radicals R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are identical or different and denote C.sub.1 - to C.sub.18 -alkyl, C.sub.5 - to C.sub.12 -cycloalkyl, C.sub.7 - to C.sub.14 -aralkyl or a group of the formula (II), (III) or (IV) ##STR10## but at least the radicals R.sup.1, R.sup.3 and R.sup.5 represent a group of the formula (III) or (IV), and, in the formulae (II), (III) and (IV), R.sup.7 denotes hydrogen or C.sub.1 - to C.sub.5 -alkyl, R.sup.8 and R.sup.9 denote identical or different radicals, which can be hydrogen, C.sub.1 - to C.sub.18 -alkyl, C.sub.5 - to C.sub.12 -cycloalkyl, C.sub.7 - to C.sub.14 -aralkyl or a group of the formula (II), l, m and n denote identical or different integers from 2 to 6, p denotes an integer from 1 to 3 and X denotes a radical of the formula ##STR11## in which R.sup.10 and R.sup.11 represent identical or different radicals which can be hydrogen, C.sub.1 - to C.sub.18 -alkyl, which can be substituted by hydroxyl, C.sub.1 - to C.sub.18 -alkoxy or C.sub.1 - to C.sub.4 -dialkylamino, C.sub.5 - to C.sub.12 -cycloalkyl, phenyl, which can be substituted by C.sub.1 - to C.sub.18 -alkyl, or C.sub.7 - to C.sub.14 -aralkyl or a group of the formula (II), but, in said X, at least one radical R.sup.10 or R.sup.11 must be a C.sub.2 - to C.sub.5 -alkyl group which is substituted by C.sub.1 - to C.sub.4 -dialkylamino, and R.sup.12 is hydrogen, C.sub.1 - to C.sub.18 -alkyl, C.sub.5 - to C.sub.12 -cycloalkyl, C.sub.7 - to C.sub.14 -aralkyl or a group of the formula (II).