| 摘要 |
The invention relates to the use of piperidine compounds of the formula Iin whichR1 is hydroxyl, lower alkyl, lower alkoxy,R2 is a substituted or unsubstituted, mono- or bicyclic radical of aromatic type,R3 is oxygen, -NH- or -N(C1-4-alkyl)- andR8 independently at each occurrence is hydrogen or methylfor preparing light-stabilized, EPDM-modified polypropylene which is employed in particular in automotive construction, such as for shock absorbers, cover strips and the like. A further subject of the invention is the combination of abovementioned piperidine compounds with known UV absorbers. The invention also relates to EPDM-modified polypropylene which contains from 0.05 to 2.5% by weight, preferably from 0.1 to 0.6% by weight, of a radical of a compound of the above formula I, and to products produced therefrom.
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