| abstract |
Stabilizing mixtures. A stabilizing mixture containing (A1) at least one compound of formula (I) in which the radicals R sub, 1, independent of each other, are hydrogen, C sub alkyl, 1 -C sub, 8, -O , -CH sub, 2 CN, C sub alkenyl, 3 -C sub, 6, phenylalkyl of C sub, 7 -C sub, 9, phenylalkyl of C sub, 7 -C sub, 9 which is substituted on the radical of phenyl for C sub, 1 -C sub, 4 alkyl; or C sub, 1 -C sub, 8 acyl and B) magnesium oxide, magnesium hydroxide, zinc oxide, zinc hydroxide or an organic zinc or magnesium salt, or a hydrotalcite; and C) either (C1) a UV absorber or (C2) a pigment or (C3) a UV absorber and a pigment. Such a stabilizer mixture is particularly useful for stabilizing a polyolefin against light-induced degradation. |