| abstract |
A 4-acyloxypiperidine of the formula I ##STR1## in which R 1 denotes C 1 -C 30 -alkyl, C 3 -C 20 -alkenyl, C 3 -C 20 -alkynyl, C 2 -C 30 -cyanoalkyl, C 2 -C 30 -alkoxyalkyl, C 7 -C 20 -aralkyl, 2,3-epoxypropyl, an aliphatic, alicyclic, aromatic, araliphatic or heterocyclic acyl group with 1-20 C atoms or one of the groups --CH 2 COOR 4 , --CH 2 -CH(R 5 )--OR 6 , --COOR 7 or --CONHR 7 , in which R 4 is C 1 -C 12 -alkyl, C 3 -C 6 -alkenyl, phenyl, C 7 -C 8 -aralkyl or cyclohexyl and R 5 is hydrogen, methyl or phenyl and R 6 denotes hydrogen or an aliphatic or aromatic, araliphatic or alicyclic acyl group with 1-18 C atoms, in which the aromatic part can optionally be substituted by chlorine, C 1 -C 4 -alkyl or C 1 -C 8 -alkoxy and/or by hydroxyl, and R 7 denotes C 1 -C 12 -alkyl, cyclohexyl, phenyl or benzyl, R 2 is hydrogen or C 1 -C 8 -alkyl, R 3 is C 1 -C 30 -alkyl, C 1 -C 30 -hydroxyalkyl, C 2 -C 30 -cyanoalkyl, C 2 -C 30 -alkoxyalkyl, C 3 -C 30 -alkoxycarbonylalkyl, C 3 -C 20 -alkenyl, C 3 -C 20 -alkynyl, C 3 -C 12 -cycloalkyl, C 6 -C 15 -aryl or C 7 -C 20 -aralkyl, Z is a monovalent to tetravalent 6-membered cycloaliphatic radical with a C 1 -C 2 bridge member, e is 1-4, m is 0-3 and e+m is 1-4, as stabilizers for organic material. |