Recording material for color photography

Claim 1

A recording material for colour photography which, in at least one light-sensitive silver halide emulsion layer, an intermediate layer, an image-receiving layer and/or a protective layer, contains, as a stabiliser, at least one polyalkylpiperidine compound of the formula I ##STR21## in which R 1 is hydrogen or methyl, R 2 is hydroxyl, C 1 -C 12 -alkyl, C 3 -C 6 -alkenyl, C 3 -C 4 -alkynyl, C 7 -C 12 -aralkyl, gycidyl, C 1 -C 4 -alkyl which is substituted by halogen, cyano, --COOR 7 or --CON(R 8 )(R 9 ), or a --CO--R 10 , --CO--OR 7 , --CO--N--(R 8 )(R 9 ), --CH 2 --CH(R 11 )--OR 12 , --SO--R 13 , --SO 2 --R 13 , --OR 7 or --OOC--R 10 group, R 3 is hydrogen or methyl, R 4 is C 1 -C 8 -alkyl, C 5 -C 8 -cycloalkyl, C 7 -C 9 -phenylalkyl, phenyl or C 7 -C 10 -alkylphenyl, R 5 is hydrogen, C 1 -C 8 -alkyl, C 5 -C 8 -cycloalkyl, C 7 -C 9 -phenylalkyl, phenyl or C 7 -C 10 -alkylphenyl, R 6 is hydrogen, C 1 -C 18 -alkyl, C.sub. 3 -C 6 -alkenyl, C 3 -C 12 -cycloalkyl, C 7 -C 12 -aralkyl, C 7 -C 10 -alkylphenyl or C 2 -C 4 alkyl which is substituted by --OR 8 , --N(R 9 ) 2 or a group of the formula ##STR22## R 7 is C 1 -C 12 -alkyl, allyl, cyclohexyl or benzyl, R 8 is C 1 -C 12 -alkyl, allkyl, cyclohexyl, benzyl or phenyl, R 9 is hydrogen, C 1 -C 12 -alkyl, allyl, cyclohexyl or benzyl, or R 8 and R 9 , together with the N atom to which they are bonded, are a 5-or 6-membered heterocyclic ring, R 10 is hydrogen, C 1 -C 12 -alkyl, C 2 -C 6 -alkenyl, chloromethyl, C 5 -C 8 -cycloalkyl, C 7 -C 12 -aralkyl, phenyl, C 7 -C 10 -alkylphenyl or phenyl, phenylmethyl or phenylethyl which are substituted by 1 or 2 C 1 -C 4 -alkyl groups and a hydroxyl group, R 11 is hydrogen, C 1 -C 4 -alkyl, C 2 -C 13 -alkoxymethyl, phenyl or phenoxymethyl, R 12 is hydrogen, C 1 -C 12 -alkyl, --CO--R 10 or --CO--N(R 8 )(R 9 ), R 13 is C 1 -C 12 -alkyl, phenyl or C 7 -C 18 -alkylaryl, A is hydrogen, C 1 -C 18 -alkyl, C 1 -C 10 -alkyl which is substituted by at least one of the --OR 14 , --SR 15 , --CN, --CO--X--R 16 , --O--CO--R 17 or --P(O)(OR 18 ) 2 groups, C 2 -C 20 -alkyl which is interrupted by --O--, --S--, --SO-- or --SO 2 --, C 3 -C 18 -alkenyl, C 3 -C 8 -alkynyl, C 3 -C 12 -cycloalkyl, C 6 -C 10 -alkylcycloalkyl, C 6 -C 10 -cycloalkylalkyl, C 7 -C 12 -aralkyl, C 8 -C 16 -alkylaralkyl, phenyl, a --CN, --CO-- R 20 , --SO 2 R 21 or --P(O)(OR 18 ) group or one of the following groups. ##STR23## in which X is --O-- or --N(R 19 )--, R 14 is phenyl, benzyl or cyclohexyl, R 15 is phenyl or C 7 -C 9 -phenylalkyl, R 16 is C 1 -C 18 -alkyl, C 5 -C 8 -cycloalkyl and R 17 is C 1 -C 18 -alkyl, C 5 -C 8 -cycloalkyl, phenyl, C 7 -C 9 -phenylalkyl or a group of the formula ##STR24## R 18 is C 1 -C 8 -alkyl, allyl or phenyl, R 19 is hydrogen, C 1 -C 18 -alkyl, allkyl, cyclohexyl, benzyl or phenyl or, together with R 16 and the N atom, a 5- or 6-membered heterocyclic ring, R 20 is hydrogen, C 1 -C 18 -alkyl, C 2 -C 6 -alkenyl, C 5 -C 8 -cycloalkyl, phenyl, C 7 -C 10 -alkylphenyl or C 7 -C 9 -phenylalkyl, R 21 is C 1 -C 18 -alkyl, cyclohexyl, phenyl, naphthyl, C 7 -C 18 -alkylaryl, C 7 -C 9 -phenylalkyl or a group of the formula ##STR25## m is zero, 1 or 2, and n is zero, 1, 2 or 3.