| 摘要 |
<p>Piperidyl derivatives of triazine copolymers, processes for their preparation and stabilised composition containing these derivatives The invention relates to novel piperidine compounds which act as light stabilisers, heat stabilisers and oxidation stabilisers for synthetic polymers and have the general formula < IMG > in which R1, R2, R3, R4, R6, R7, A, B, X, Y, a and b are as defined in claim 1. The compounds are particularly useful as light stabilisers for polyolefines in the form of fibres or film.</p> |
