abstract |
The present invention relates to (a) a compound of formula (AI), (b) a compound of formula (BI), (B-II), (B-III) or (B-IV) [wherein Z 1 is linear C 12 -alkyl or linear C 18 -alkyl], and (c) further relates to a composition comprising a compound that is a sterically hindered phenolic antioxidant. The composition is used for the stabilization of organic polymers against degradation by heat, light and / or oxidation. The organic polymer is, for example, a styrene-butadiene copolymer, a styrene-isoprene copolymer or polybutadiene. |