Patent ID: 7169835

Claim:
A composition comprising a polyolefin subject to degradation induced by light, heat or oxidation and a stabilizer mixture containing (A) a sterically hindered amine compound, and (B) 0.005 to 1%, relative to the weight of the polyolefin, of two different compounds selected from the group consisting of an organic salt of Zn, an inorganic salt of Zn, zinc-oxide, zinc-hydroxide an organic salt of Mg, an inorganic salt of Mg, magnesium-oxide and magnesium-hydroxide; the weight ratio of the two different compounds being 1:5 to 5:1; with the provisos that (1) the stabilizer mixture is essentially free of perchloric acid, and (2) the two compounds in component (B) are different from the combination ZnO and Zn stearate and the combination ZnO and hydrotalcite.