| 摘要 |
A-19057/A/CHM 66 Novel piperidine-triazine co-oligomers for use as stabilisers for organic materials of the disclosure Novel piperidine-triazine compounds comprising recurring units of the formulae (Ia) and (Ib) (Ia) (Ib) having a number-average molecular weight from 1,000 to 20,000 and a (Ia):(Ib) ratio from 4:1 to 1:4, in which R1 is e.g. an alkylamino group, R2 is e.g. 1,2,2,6,6-pentamethyl-4-piperidyl and R3 and R4 are e.g. C2-C12alkylene. These compounds are useful as light-stabilisers, heat-stabilisers and oxidation-stabilisers for organic materials. In particular, the compounds of the present invention exert a surprising light-stabilising action in polypropylene fibres.
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