Permanently stabilized polymers produced by after-treatment with piperidine compounds

Claim 1

A permanently stbilised polymer having stabilising radicals attached to O- or N-atoms said radicals corresponding to the general formula (I-A): ##STR72## in which R represents hydrogen, a straight-chain or branched alkyl radical with 1 to 20 carbon atoms, an alkenyl radical with 3 to 5 carbon atoms, an aralkyl radical with 7 to 12 carbon atoms, the group --CH-- CHR 6 --OH, where R 6 is hydrogen, methyl or phenyl, the group --CH 2 --CH 2 --CN, the group --CH 2 --CH 2 COOalkyl or the group ##STR73## R 1 and R 2 , which may be the same or different, each represents a straight-chain or branched alkyl radical with 1 to 6 carbon atoms or R 1 and R 2 , together with the ring carbon atom to which they are attached, form a cycloalkyl ring with 5 to 7 carbon atoms, --A-- represents ##STR74## (b) --O--E--, or (c) --CO--NH--NH--; in case (a), X in the general formula (I-A) represents hydrogen, in case (b), X represents hydrogen, the cyano group or a --COOR 7 -group where R 7 is a methyl or ethyl radical, and in case (c), X represents the OH-group and R 3 ' represents hydrogen, a straight-chain or branched alkyl radical with 1 to 20 carbon atoms, a cycloalkyl radical with 5 to 12 carbon atoms, an aralkyl radical with 7 to 12 carbon atoms, a β-cyanoethyl radical, a β-alkoxycarbonylethyl radical with 1 to 3 carbon atoms in the alkoxy moiety, an aryl radical with 6 to 10 carbon atoms, the group --CH 2 --CH (R 6 )--OH (in which R 6 represents hydrogen, methyl or phenyl), the group: ##STR75## where G is an alkylene group with 2 to 6 carbon atoms, an aralkylene group with 8 to 10 carbon atoms or an arylene group with 6 to 8 carbon atoms, or the group: ##STR76## or the group --E--CO--NH--CH 2 -- where M represents an alkane triyl group with 5 or 6 carbon atoms or an aralkane triyl group with 9 carbon atoms and where E represents a C 1 to C 3 -alkylene radical, the group --CH 2 --CH(R 6 )--O-- (where R 6 is as defined above), the group --(CH 2 ) 3 --NH--, the group --C 1 to C 3 -alkylene--CO--NH--, the group --C 1 to C 3 -alkylene --CO--NH--NH-- or the group --CO--NH--NH or a single bond, the radical --CO--NH--CH 2 -- never being directly attached twice to the nitrogen atom in formula (a).