Piperidinyl-s-triazines

A member selected from the group consisting of a compound of the formula I ##STR14## and an addition salt thereof, in which one of the radicals R', R" and R'" is a group of the formula II:

• ##STR15## wherein one of R.sub.1 and R.sub.3 is --OH and the other is hydrogen, R.sub.2 is C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.9 aralkyl, R.sub.4 and R.sub.5 are hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.9 aralkyl, n is an integer of 0 to 12 and X is --O--, --S-- or --NR.sub.6 -- wherein R.sub.6 is hydrogen or C.sub.1 -C.sub.12 alkyl, and one of the radicals R', R" and R'" is one of the groups ##STR16## in which Y is --O-- or --NR.sub.6 -- wherein R.sub.6 has the meaning defined above, Z is --O-- or --S--, m is 1 to 6, R.sub.7 is hydrogen or C.sub.1 -C.sub.8 alkyl and R.sub.8 is hydrogen, oxygen, C.sub.1 -C.sub.12 alkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.4 alkinyl, C.sub.2 -C.sub.21 alkoxyalkyl, C.sub.7 -C.sub.8 aralkyl, 2,3-epoxypropyl, an aliphatic acyl group with 1-4 C atoms or one of the groups --CH.sub.2 COOR.sub.9, --CH.sub.2 --CH(R.sub.10)--OR.sub.11, --COOR.sub.12 or --CONHR.sub.12, wherein R.sub.9 is C.sub.1 -C.sub.12 alkyl, C.sub.3 -C.sub.6 alkenyl, phenyl, C.sub.7 -C.sub.8 aralkyl or cyclohexyl, R.sub.10 is hydrogen, methyl or phenyl, R.sub.11 is hydrogen, an aliphatic, aromatic, araliphatic or alicyclic acyl group with 1-8 C atoms, wherein the aromatic part is unsubstituted or is substituted by chlorine, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.8 alkoxy or by hydroxyl, and R.sub.12 is C.sub.1 -C.sub.12 alkyl, cyclohexyl, phenyl or benzyl, and R.sub.13 is hydrogen, --OH or one of the groups --O--CO--R.sub.14 or --NR.sub.12 --CO--R.sub.14, wherein R.sub.14 is C.sub.1 -C.sub.12 alkyl or phenyl, and one of the radicals R', R" and R'" independently of the others is an identical or different group of the formula II, or is an identical or different group III, IV or V, or is --N.sub.3, or one of the groups --S--R.sub.15, --OR.sub.17, --P(O)--(OR.sub.17).sub.2 or --NR.sub.18 R.sub.10, wherein R.sub.15 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.6 -C.sub.10 aryl, C.sub.7 -C.sub.9 aralkyl or the group --(C.sub.p H.sub.2p)--CO--OR.sub. 16 wherein R.sub.16 is C.sub.1 -C.sub.18 alkyl, and p is 1 to 6, R.sub.17 is C.sub.1 -C.sub.18 alkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.9 aralkyl and R.sub.18 and R.sub.19 independently of one another are hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.6 -C.sub.10 aryl, C.sub.7 -C.sub.9 aralkyl or the group ##STR17## in which R.sub.7 and R.sub.8 have the meaning defined above.