1-hydrocarbyloxy-piperidine compounds containing silane groups for use as stabilizers for organic materials

A compound of the formula (I) ##STR18## in which m+n is a number from 1 to 100 and n varies from zero to 90% of the sum of m+n,

• A is --O-- or ##STR19## where R.sub.6 is hydrogen, C.sub.1 -C.sub.18 alkyl or a group of the formula (II) ##STR20## R.sub.1 and R.sub.4 which can be identical or different are C.sub.1 -C.sub.8 alkyl, phenyl, C.sub.1 -C.sub.8 alkoxy, OH, ONa or OK,
• R.sub.2 is C.sub.2 -C.sub.12 alkylene or also a direct bond if A is --O-- and R.sub.1 and R.sub.4 are C.sub.1 -C.sub.8 alkyl or phenyl,
• R.sub.3 is C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.18 alkenyl, C.sub.5 -C.sub.12 cycloalkenyl, C.sub.7 C.sub.12 aralkyl, a saturated or unsaturated radical of a bicyclic or tricyclic C.sub.7 -C.sub.12 hydrocarbon or C.sub.6 -C.sub.10 aryl which is unsubstituted or substituted by C.sub.1 -C.sub.8 alkyl,
• R.sub.5 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl or phenyl,
• X.sub.1 is as defined for R.sub.1 or is a group (R.sub.7).sub.3 SiO-- with R.sub.7 being C.sub.1 -C.sub.8 alkyl,
• X.sub.2 is hydrogen, Na, K, C.sub.1 -C.sub.8 alkyl, a group (R.sub.7).sub.3 Si-- or, if n is zero and R.sub.1 and X.sub.1 are C.sub.1 -C.sub.8 alkyl or phenyl, X.sub.2 is also a group of the formula (III) ##STR21## and, if m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together can also be a direct bond.