| 摘要 |
Novel 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compounds containing two nonadjacent nuclear nitrogen atoms are provided which are useful as stabilisers for organic polymers. Organic polymers containing the 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compounds dispersed therein exhibit improved resistance to deterioration induced by light, by heat or both. The 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compounds may be prepared by a method comprising reacting a 2,2,6,6-tetramethyl-4-piperidyl substituted 1,2-aliphatic diamine with a monoaldehyde or dialdehyde.
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