abstract |
Piperidyl esters of the formula <IMAGE> wherein R1 is hydrogen or lower alkyl, R2 is hydrogen, oxyl alkyl, alkenyl, alkinyl, alkoxy-alkyl, aralkyl or lower acyl and n is 2 or 3, and when n is 2, R3 is a diacyl of 36 carbons and when n is 3, R3 is a triacyl of 37 to 54 carbons. These compounds are useful as light stabilizers of polymeric materials. |