Polyalkylpiperidinyl esters of diazocarboxylic acid and their use for stabilizing polymers

Claim 1

A diazo compound of the formula ##STR3## in which R 1 is a radical of the formula ##STR4## and R 2 represents hydrogen --CHO, --CN, --NO 2 , --COR 1 , --COR 5 , --SO 2 R 6 , --COOR 7 , --CONH 2 , --CONHR 17 , --CON(R 17 ) 2 , --P(O)(C 6 H 5 ) 2 or --P(O)(OR 18 ) 2 , X denotes H, O, alkyl with 1-12 C atoms, alkenyl with 3-6 C atoms, alkinyl with 3-6 C atoms, alkoxyalkyl with 3-10 C atoms, phenylalkyl with 7-9 C atoms, 2,3-epoxypropyl --CH 2 COOR 8 , --CH 2 CH 2 COOR 8 , --CH 2 CH(R 9 )--OR 10 , --COR 11 , --COOR 12 or --CONHR 13 , Y denotes oxygen, NH or N-alkyl with 1-4 C atoms, R 3 denotes H or alkyl with 1-4 C atoms, R 4 denotes, H, --OR 14 or --N(R 15 )(R 16 ), R 5 and R 6 denote alkyl with 1-18 C atoms, cyclohexyl, aryl with 6-10 C atoms, aryl with 6-10 C atoms substituted by chlorine or alkyl with 1-8 C atoms, phenylalkyl with 7-9 C atoms phenylalkyl with 7-9 C atoms substituted by one or two alkyl with 1-4 C atoms or by hydroxyl or combinations thereof, or a group of the formula --CH 2 COR 1 or --CH 2 COOR 12 , R 7 denotes alkyl with 1-18 C atoms, alkenyl with 3-6 C atoms, alkinyl with 3-6 C atoms, cycloalkyl with 5-12 C atoms, phenyl, alkylphenyl with 7-14 C atoms or phenylalkyl with 7-9 C atoms, R 8 denotes alkyl with 1-18 C atoms, alkenyl with 3-6 C atoms, phenyl, benzyl or cyclohexyl, R 9 denotes H, methyl or phenyl, R 10 denotes, H, C 1 -C 18 alkyl, C 5 -C 12 cycloalkyl, C 7 -C 14 aralkyl, C 3 -C 6 alkenyl, C 3 -C 6 alkenyl or an aliphatic acyl, aromatic acyl, araliphatic acyl or cycloaliphatic acyl each acyl group derived from a monocarboxylic acid with up to 18 C atoms, wherein the aromatic part can be substituted by halogen, alkoxy or alkyl each with 1-4 C atoms or hydroxyl or combinations thereof, R 11 denotes H, alkyl with 1-6 C atoms or alkenyl with 2-4 C atoms, R 12 denotes alkyl with 1-12 C atoms, phenyl, benzyl or cyclohexyl, R 13 denotes alkyl with 1-12 C atoms, aryl with 6-10 C atoms, aryl with 6-10 C atoms substituted by chlorine or alkyl with 1-8 C atoms, phenylalkyl with 7-9 C atoms or cyclohexyl, R 14 denotes alkyl with 1-18 C atoms, alkenyl with 3-6 C atoms, alkinyl with 3-6 C atoms, benzyl, 2-cyanoethyl, an aliphatic acyl, cycloaliphatic acyl, aromatic acyl or araliphatic acyl each aryl group derived from a monocarboxylic acid with up to 18 C atoms, which can be substituted in the aromatic part by halogen, alkyl or alkoxy each with 1-4 C atoms or hydroxyl or combinations thereof, R 15 denotes alkyl with 1-18 C atoms, alkenyl with 3-6 C atoms or phenylalkyl with 7-9 C atoms, R 16 denotes an aliphatic acyl, cycloaliphatic acyl, aromatic acyl or araliphatic acyl each acyl group derived from a monocarboxylic acid with up to 18 C atoms, which can be substituted in the aromatic part by halogen, alkyl or alkoxy each with 1-4 C atoms or hydroxyl or combinations thereof, R 17 denotes alkyl with 1-12 C atoms, cyclohexyl, benzyl or phenyl and R 18 denotes alkyl with 1-18 C atoms, aryl with 6-10 C atoms, aryl with 6-10 C atoms substituted by chlorine or alkyl with 1-8 C atoms, or phenyl-alkyl with 7-9 C atoms.