Stability of systems can be influenced by processing conditions. Extent of influence is dependend not merely upon processing conditions, but also used stabiliser formulations. There were investigated the systems, which contained as a photostabiliser varioushindered amine compounds and 2-hydroxy-4octyloxybenzophenone. There was investigated the effect on photostability in accelerating aging in Xenotest 450/uptake of carbonyls/. From results can be concluded that hindered amines much better protect polyolefines even after processing at higher temperatures than commercialy known UV-absorber-2hydroxy-4-octyloxybenzophenone.Vortrag anlBBlich des 1 4 . DonaulBndergesprBchs iiber "Natiirliche und kiinstliche Alterung von Kunststoffen" in Slantchev Brijag, Bulgarien, vom 7 . bis 9. Oktober 1 9 8 1
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