Condensates of butyne-linked hindered amines

Abstract

The invention relates to compounds of the formula I ##STR1## in which n is a number in the range from 1 to 100; X is --R.sup.7 --, --CO--, --CO--CO--, --CO--R.sup.2 --CO--, --CO--NH--R.sup.5 --NH--CO--, --CO--O--R.sup.6 --O--CO-- or ##STR2## where p is a number in the range from 0 to 6, X' is O or a direct bond, E is C.sub.1 -C.sub.12 alkyl, phenyl, C.sub.7 -C.sub.12 phenylalkyl or C.sub.5 -C.sub.12 cycloalkyl, and E' is hydrogen or is as defined for E; Z, when X is R.sup.7, is O or NR.sup.1 ; Z, when X is ##STR3## is O; and Z, in all other cases, is O, NH or NR.sup.1 ; R.sup.1 is C.sub.1 -C.sub.4 alkyl, C.sub.7 -C.sub.9 phenylalkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.8 alkanoyl, benzoyl or C.sub.1 -C.sub.4 alkyl-substituted benzoyl; R.sup.2 and R.sup.7 are C.sub.1 -C.sub.18 alkylene; C.sub.2 -C.sub.18 alkylene which is interrupted by O or S; phenylene; a mixed aromatic/aliphatic radical containing 7 to 12 carbon atoms; naphthylene; or an --R.sup.4 --D--R.sup.4 -- radical; R.sup.4 is 1,4-cyclohexylene or 1,4-phenylene; and R.sup.6 is phenylene, naphthylene or ##STR4## R.sup.5, when Z is O, is as defined for R.sup.6 ; and R.sup.5, when Z is NH or NR.sup.1, is as defined for R.sup.6 ; and D is C.sub.1 -C.sub.3 alkylene, --S--, --SO--, --SO.sub.2 --, --CO--, --O--, --NH-- or --NR.sup.1 --. Compounds of the formula I can advantageously be used for stabilizing organic material against the harmful effects of light, oxygen and/or heat.

Dependencies are inferred from the claim text.