A stabilizer mixture containing
(A) for example a compound of the formula (A-I)
wherein R
1
is hydrogen or C
1
-C
4
alkyl, R
2
is a direct bond or C
1
-C
1
-C
10
alkylene and n
1
is a number from 2 to 50;
(B) a sterically hindered amine compound; and
(C) anatase;
with the proviso that the component (B) is different from a compound of the formula (A-I).