Piperidine compounds a tetrahydrofuran ring for use as stabilisers for organic material

摘要

The present invention relates to novel tetramethylpiperidine compounds of the general formula (I) f the formula (IIa) or (IIb) <IMAGE> (IIa) <IMAGE> (IIb) in which R1 and R2 are e.g. hydrogen or methyl. The said compounds are effective stabilizers for organic materials, in particular synthetic polymers, against the action of light, heat and oxidation.