The effect of ferrocene additive concentrations on the stability of polyethylene polymers under atmospheric ageing and ultraviolet irradiation is reported. At concentrations under ca 5 X 1O-j mol kg-' polymer the ferrocene compound is shown to diminish pdymer resistance to light, whereas above this concentration such a compound stabilizes the polymeric matrix. Another purpose of the work is to look into the photo-oxidative destruction of polyethylene doped with ferrocene compound by using an EPR technique. A mechanism of photo-oxidative destruction of polyethylene polymers in the presence of ferrocene compounds is proposed.

β‐Naphthylamin (I) und Formylferrocen (II) reagieren zur Azomethinverbindung (III).

überschüssiges Diäthylferrocen (I) reagiert mit den aromatischen Aldehyden (II) zu Bis‐( 1 ,1‐diäthylferrocenyl)‐aryl‐methanen (III).

Das 5,6‐Benzolepidin mit einem Ferrocensubstituenten (III) kann man nach 2 Verfahren erhalten.

No abstract