2,2,6,6-Tetramethylpiperidine derivatives
AssigneeCiba-Geigy Corporation
InventorFriedrich Karrer
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Abstract
2,2,6,6-Tetramethylpiperidine derivatives of the formula I ##STR1## in which A is a radical of the formula II, III or IV, and in formula II B is bonded to the N atom, ##STR2## B is C.sub.2 -C.sub.12 alkylene, C.sub.4 -C.sub.10 alkenylene, C.sub.6 alkynylene, xylylene or bitolylene, R.sub.1 is H or C.sub.1 -C.sub.12 alkyl, R.sub.2 is hydrogen, methyl, ethyl, phenyl or phenoxymethyl and n is 0, 1 or 2, for use as stabilizers for synthetic organic polymer.
Claims4
A 2,2,6,6-tetramethylpiperidine of the formula I ##STR7## in which A is a radical of the formula II, III or IV, and in formula II B is bonded to the N atom, ##STR8## B is C.sub.2 -C.sub.12 alkylene, C.sub.4 -C.sub.10 alkenylene, C.sub.6 alkynylene, xylylene or bitolylene, R.sub.1 is H or C.sub.1 -C.sub.12 alkyl, R.sub.2 is hydrogen, methyl, ethyl, phenyl or phenoxymethyl and n is 0, 1 or 2.
Dependencies are inferred from the claim text.