Coating material stabilized against the action of light

Claim 1

A compound of the formula I or II ##STR24## wherein x is 1, R 1 is an acyl group of the formula --CO--R 5 , a sulfonyl group of the formula --SO 2 --R 6 , a phosphoryl group of the formula P(O) r (R 14 ) (R 15 ), R 2 is C 1 -C 12 -alkyl, C 5 -C 12 -cycloalkyl, phenyl, C 7 -C 9 -phenylalkyl, C 3 -C 5 -alkenyl or halogen, R 3 in the formula I is a group of the formula --(CH 2 ) n --COOR 9 or --(CH 2 ) n --CO--N(R 10 ) (R 11 ), and in the formula II is a divalent group of the formula: --(CH.sub.2).sub.n --CO--O--(CH.sub.2).sub.q --O--CO--(CH.sub.2).sub.n --, --(CH.sub.2).sub.n --CO--O--(CH.sub.2 CH.sub.2 O).sub.p --CO--(CH.sub.2).sub.n -, --(CH.sub.2).sub.n --CO--NH--R.sup.12 --NH--CO--(CH.sub.2).sub.n -- or ##STR25## R.sup.4 is hydrogen, halogen, C.sub.1 --C.sub.8 -alkyl, C.sub.7 --C.sub.9 -phenylalkyl, C 1 --C 8 -alkoxy or C 2 --C 8 -alkoxycarbonyl, R 5 is C 1 -C 18 -alkyl, C 2 -C 18 -alkenyl, --CH 2 CO--CH 3 , phenyl, phenyl substituted by C 1 -C 12 -alkyl, C 1 -C 4 -alkoxy or benzoyl, or is C 7 -C 12 -arylalkyl or C 1 -C 12 -alkoxy, R 6 is C 1 -C 12 -alkyl, C 6 -C 10 -aryl or C 7 -C 18 alkylaryl, R 9 is hydrogen, C 1 -C 12 -alkyl or a group of the formula --(CH 2 CH 2 O) p --R 1 , R 10 and R 11 independently of one another are hydrogen, C 1 -C 12 -alkyl, which can be interrupted by O or N, C 5 -C 12 -cycloalkyl, C 7 -C 9 -phenylalkyl, C 3 -C 5 -alkenyl, phenyl or a 2,2,6,6-tetramethyl-4-piperidinyl radical, or R 10 and R 11 together are C 4 -C 6 -alkylene, -oxaalkylene or -azaalkylene, R 12 is C 1 -C 12 -alkylene, which can be interrupted by 1-3 O atoms, R 13 is C 1 -C 12 -alkyl or C 6 -C 10 -aryl, R 14 and R 15 independently of one another are each C 1 -C 12 -alkoxy, phenoxy, C 1 -C 12 -alkyl, cyclohexyl, benzyl, phenyl or tolyl, n is 1 or 2, p is a number from 1 to 10, q is a number from: 2 to 12, and r is 0 or 1.