N-Piperidyl lactam light stabilizers

Claim 1

A light stabilizer compound of the formula I or II (L--T).sub.g --E (I) or (L--T--G).sub.h --Q (II) wherein L is a lactam group of the formula ##STR8## n is 0 to 3, T is a group of the formula ##STR9## with L attached to the 4-position of the piperidinyl ring, R 1 is hydrogen or alkyl of 1 to 5 carbon atoms, g is 1 or 2, when g is 1, E is hydrogen, oxygen, hydroxyl, alkyl of 1 to 12 carbon atoms, alkenyl with 3 to 8 carbon atoms, propargyl, benzyl, cyano, hydroxyalkyl of 2 to 4 carbon atoms, alkanoyl of 2 to 10 carbon atoms, alkenoyl of 3 to 4 carbon atoms, benzoyl, alkoxy of 1 to 8 carbon atoms, alkanoyloxy of 2 to 10 carbon atoms, alkenoyloxy of 3 to 4 carbon atoms, benzoyloxy, when g is 2, E is a straight- or branched-chain alkylene of 2 to 6 carbon atoms, styrolene, 2-butenylene or alkylenearylenealkylene of 8 to 15 carbon atoms; or G is G 1 or G 2 , G 1 is ##STR10## R 2 is hydrogen, alkyl of 1 to 2 carbon atoms or phenyl, G 2 is --CH 2 COO--, where T is attached to the methylene carbon atom of G 1 or G 2 , h is 1 to 4, when h is 1 and G is G 1 , Q is alkanoyl of 2 to 10 carbon atoms, benzoyl, or the group ##STR11## R 3 is alkyl of 1 to 8 carbon atoms, R 4 is branched alkyl of 3 to 8 carbon atoms, when h is 2 and G is G 1 , Q is carbonyl, oxalyl or alkanedioyl of 3 to 12 carbon atoms, when h is 3 and G is G 1 , Q is alkanetrioyl of 6 to 10 carbon atoms, when h is 4, and G is G 1 Q is alkanetetroyl of 8 to 12 carbon atoms, when h is 1 and G is G 2 , Q is alkyl of 1 to 12 carbon atoms, or the group T--E where E is as defined above when g is 1, when h is 2 and G is G 2 , Q is alkylene of 2 to 12 carbon atoms, cycloalkylene of 6 to 8 carbon atoms, 3-oxapentamethylene, 1,4-cyclohexylenedimethylene or the group --T--CH 2 CH 2 --, when h is 3 and G is G 2 , Q is alkanetriyl of 3 to 8 carbon atoms, or when h is 4 and G is G 2 , Q is alkanetetrayl of 4 to 10 carbon atoms.